{ "id": "lst300-before-use", "family": "garden", "title": "LST300 guard & setup check", "summary": "Confirm the guard, cap and handle before reinstalling the battery for normal use.", "goal": "A battery-removed setup record with clear no-go findings.", "taskIds": [ "lst300-guard-check", "lst300-cap-latch", "lst300-handle-adjust" ], "stages": [ "Inspect the correct guard and sharp line cutter with the battery removed.", "Check the original cap tabs and full seating.", "Set and lock the adjustable handle using the matching manual." ], "supplies": [ "Good lighting", "The original matching guard and cap", "Battery removed throughout setup" ], "season": "At the start of each use: inspect the protective parts. After a strike or damaged part, stop and use the service route.", "calendarLabel": "Check the trimmer before the next session", "scheduleNote": "This reminder supplements the pre-use checks; it does not extend the life of a damaged guard.", "version": "2.0.0", "kind": "maintenance-pack", "scheduleBasis": "User-selected reminder; task-specific manufacturer triggers remain authoritative", "physicalRepairVerified": false, "modelApplicability": [ "lst300-us" ], "fitChecks": [ { "id": "type", "label": "Model and tool type", "accepted": "matched", "options": [ { "value": "", "label": "Choose the version you can confirm" }, { "value": "matched", "label": "LST300 and the exact type on my label match my manufacturer manual and figures" }, { "value": "different", "label": "My type or manual figures differ" }, { "value": "unchecked", "label": "I have not checked the type number" }, { "value": "unknown", "label": "I am not sure" } ], "help": "Remove the battery before finding the label. Use the manufacturer model-and-type lookup; this site does not infer a type number from LST300 alone." }, { "id": "head", "label": "Cutting head", "accepted": "af100", "options": [ { "value": "", "label": "Choose the version you can confirm" }, { "value": "af100", "label": "Original AF-100 automatic-feed single-line head" }, { "value": "bump", "label": "Bump-feed head" }, { "value": "dual", "label": "Dual-line or modified head" }, { "value": "metal", "label": "Metal line or blade" }, { "value": "unknown", "label": "I am not sure" } ], "help": "Do not substitute a bump-feed procedure, dual-line spool or metal cutting attachment." } ], "tasks": [ { "id": "lst300-guard-check", "version": "2.0.0", "title": "Inspect and secure the guard", "deviceFamily": "garden", "intent": "Maintenance", "summary": "Check the guard, retaining screw and cutter; fit only an undamaged supplied guard using the matching assembly figures.", "modelApplicability": [ "lst300-us" ], "modelDetails": [ { "id": "lst300-us", "family": "garden", "brand": "BLACK+DECKER", "series": "LST300", "label": "BLACK+DECKER LST300 · US · AF-100", "region": "US", "componentVersion": "Automatic-feed head with AF-100 spool; match model and tool type to manual", "manual": "lst300-manual", "help": "Remove the battery. Find LST300 and the adjacent type number on the tool label. Compare the guard, cap, spool and assembly figures with the linked LST300 manual. Use ServiceNet for your exact type if they differ. LST300 is not a bump-feed head.", "exclusions": [ "LST420 / LSTE525", "GH corded models", "Dual-line heads", "Metal line or blades", "Nonmatching tool type or modified head" ], "recognitionSource": "bd-manual-help" } ], "exclusions": [ "LST420 / LSTE525", "GH corded models", "Dual-line heads", "Metal line or blades", "Nonmatching tool type or modified head", "Unknown tool type or missing exact-type manual", "Bump-feed conversion" ], "prerequisites": [ "Release the trigger, let the head stop, engage the lock-off and remove the battery. Leave it removed throughout hands-on care. Keep fingers away from the sharp cutter on the guard.", "Read LST300 and the tool type from the label. Open the official model/type lookup and compare its manual and parts figures with your actual guard, single-line head and AF-100 spool. A readable model name alone does not establish the type. If the exact type manual cannot be obtained, or any figure differs, save a preparation record and stop." ], "tools": [ "Good lighting", "Phillips screwdriver only for the documented guard screw" ], "materials": [ "Supplied undamaged type-matched guard and original screw, only if initial assembly is needed" ], "checks": [ { "id": "safety", "prompt": "Is the battery removed, the trigger released and the cutting head stopped, with no battery damage, exposed wiring or faulty switch?", "sourceId": "lst300-manual", "sourceLocator": "English pp2–3 Safety; p8 Installing and removing the battery pack", "options": [ { "id": "yes", "label": "Yes", "next": "compatibility", "advice": "Keep the battery removed for every hands-on step." }, { "id": "no", "label": "No", "next": "service", "advice": "Stop using the tool for electrical, battery or switch damage. If you have only omitted battery removal, make the tool safe before restarting." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] }, { "id": "compatibility", "prompt": "Have you matched the label LST300 AND its exact tool type to the official lookup manual and its figures, with the original AF-100 automatic single-line head?", "sourceId": "bd-manual-help", "sourceLocator": "Official model/type lookup instructions; type is beside or below the model number", "options": [ { "id": "yes", "label": "Yes", "next": "check-1", "advice": "Record the label type and matching manual reference in the first step." }, { "id": "no", "label": "No", "next": "prepared", "advice": "An unknown type, unavailable type manual, different figures, bump-feed head or dual-line conversion blocks this procedure. Use manufacturer support to identify the correct instructions." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] }, { "id": "check-1", "prompt": "Is the supplied or installed guard intact and an exact match for figs D–E in your type manual?", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E", "options": [ { "id": "yes", "label": "Yes", "next": "check-2", "advice": "Check its attachment without touching the sharp cutter." }, { "id": "no", "label": "No", "next": "service", "advice": "Cracked, incorrect or damaged guards need the correct part and authorized service." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] }, { "id": "check-2", "prompt": "Are the guard tabs, motor-housing ribs, locking slot and original screw intact?", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E", "options": [ { "id": "yes", "label": "Yes", "next": "steps", "advice": "An undamaged supplied guard can be fitted as shown." }, { "id": "no", "label": "No", "next": "service", "advice": "Do not compensate for damaged tabs or threads with a different screw, tape or force." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] } ], "branches": [ { "checkId": "safety", "optionId": "yes", "next": "compatibility" }, { "checkId": "safety", "optionId": "no", "next": "service" }, { "checkId": "safety", "optionId": "unsure", "next": "prepared" }, { "checkId": "compatibility", "optionId": "yes", "next": "check-1" }, { "checkId": "compatibility", "optionId": "no", "next": "prepared" }, { "checkId": "compatibility", "optionId": "unsure", "next": "prepared" }, { "checkId": "check-1", "optionId": "yes", "next": "check-2" }, { "checkId": "check-1", "optionId": "no", "next": "service" }, { "checkId": "check-1", "optionId": "unsure", "next": "prepared" }, { "checkId": "check-2", "optionId": "yes", "next": "steps" }, { "checkId": "check-2", "optionId": "no", "next": "service" }, { "checkId": "check-2", "optionId": "unsure", "next": "prepared" } ], "steps": [ { "title": "Record the exact tool and make it safe", "text": "Release the trigger, let the head stop, engage the lock-off and remove the battery. Leave it removed throughout hands-on care. Keep fingers away from the sharp cutter on the guard. Read LST300 and the tool type from the label. Open the official model/type lookup and compare its manual and parts figures with your actual guard, single-line head and AF-100 spool. A readable model name alone does not establish the type. If the exact type manual cannot be obtained, or any figure differs, save a preparation record and stop.", "observation": "The battery is physically separate from the tool; your label type and matching manual reference are written below.", "sourceId": "bd-manual-help", "sourceLocator": "Official model/type lookup instructions; type is beside or below the model number", "requiredFields": [ "tool-type", "matched-manual" ], "id": "step-1" }, { "title": "Inspect the installed guard", "text": "Turn the stopped, battery-removed tool so the spool cap and guard can be seen. Look for splits, missing sections, bent mounting features and a loose screw. Keep clear of the line cutter.", "observation": "The guard has no damage and its mounting features can be identified.", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E", "id": "step-2" }, { "title": "Identify whether assembly is needed", "text": "If the guard is already correctly secured, leave it in place and continue to the attachment check. For an undamaged supplied guard awaiting initial assembly, remove its supplied screw with a Phillips screwdriver.", "observation": "You are either checking the installed guard or fitting the supplied intact part; damaged mounting parts require service.", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E", "id": "step-3" }, { "title": "Fit the supplied guard if needed", "text": "For initial assembly, turn the guard upside down and slide it fully onto the motor housing. Match guard tabs to the housing ribs in fig D and continue until the locking tab snaps into the housing slot. Do not force misaligned parts.", "observation": "The tabs engage the ribs and the locking tab occupies its slot.", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E", "id": "step-4" }, { "title": "Check the retaining screw", "text": "For initial assembly, insert the supplied guard screw as fig E shows. For an installed guard, check that this screw is present and the guard is firmly retained. No torque value is provided in this task; damaged threads require service.", "observation": "The screw arrangement matches fig E and the guard stays firmly in place.", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E", "id": "step-5" }, { "title": "Check the cutter cover and record the result", "text": "Only after a new guard is secured, remove the factory covering from the line cutter as the manual directs. Keep fingers away from the cutting edge. Record the mounting result; a missing, damaged or loose guard blocks operation.", "observation": "The mounted guard is secure; no factory cover remains when preparing for use.", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E", "id": "step-6" } ], "outcomeChecks": [ { "id": "outcome-1", "text": "Undamaged guard tabs, ribs, locking tab and screw are in the documented arrangement.", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E" }, { "id": "outcome-2", "text": "The guard is firmly retained and the sharp cutter can be avoided during later checks.", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E" } ], "stopConditions": [ "Keep the battery removed if the exact type/manual match is unknown or parts differ from the figures.", "Stop for a damaged battery, exposed wiring, a faulty switch, cracked guard, broken spool/hub, damaged cap tabs or housing slots. Use an authorized service center. Never open the battery, motor housing or charger." ], "sources": [ { "id": "lst300-manual", "title": "BLACK+DECKER LST300 instruction manual (manufacturer document, retailer-hosted)", "url": "https://pdf.lowes.com/productdocuments/1935f26b-7448-4c95-b467-a223bb73d80f/63056925.pdf", "checkedAt": "2026-10-13", "use": "Safety, assembly, replacement spool/line, maintenance and troubleshooting. Match the tool type and figures before use.", "license": "Manufacturer copyright, hosted by Lowe’s. Facts paraphrased; no diagrams or manual redistributed.", "region": "US", "locator": "English p8 Installing the guard; figs D–E" }, { "id": "bd-manual-help", "title": "BLACK+DECKER: locate a manual using model and type number", "url": "https://support.blackanddecker.com/hc/en-us/articles/360012700118-How-can-I-get-a-parts-list-or-manual-for-my-tool", "checkedAt": "2026-10-13", "use": "Model/type number identification and authoritative ServiceNet lookup", "license": "Linked only.", "region": "US", "locator": "Official model/type lookup instructions; type is beside or below the model number" }, { "id": "lst300-product", "title": "BLACK+DECKER LST300 product and support", "url": "https://www.blackanddecker.com/products/lst300", "checkedAt": "2026-10-13", "use": "Model identity, automatic feed, AF-100 included spool", "license": "Linked only; no product photos reused.", "region": "US", "locator": "LST300 model identity; Automatic Feed Spool; Includes AF-100" } ], "assets": [ { "path": "/assets/garden/guard-check.svg", "title": "Guard tabs, ribs, locking slot and retaining screw sequence", "kind": "Original sequence schematic; compare the exact tool-type manual for shape and location", "sourceId": "lst300-manual" } ], "relatedIds": [ "lst300-impact-check", "lst300-after-care" ], "specs": [], "updatedAt": "2026-10-13", "estimatedDuration": null, "group": "lst300-guard", "recordFields": [ { "id": "tool-type", "label": "Tool type exactly as printed on the label", "type": "text", "required": true, "dependsOnStep": "step-1" }, { "id": "matched-manual", "label": "Exact-type manual reference or link that you matched", "type": "text", "required": true, "dependsOnStep": "step-1" }, { "id": "guard-state", "label": "Guard at the start", "type": "select", "options": [ { "value": "installed", "label": "Already installed" }, { "value": "new", "label": "Supplied guard awaiting assembly" } ], "required": true, "dependsOnStep": "step-2" }, { "id": "guard-secure", "label": "Guard and supplied screw are firmly secured", "type": "checkbox", "required": true, "dependsOnStep": "step-5" }, { "id": "final-result", "label": "Result of this task", "type": "select", "options": [ { "value": "ready", "label": "Checks passed; ready for the stated next step" }, { "value": "follow-up", "label": "More preparation or a linked task is needed", "resultGate": "prepared" }, { "value": "service", "label": "Leave unused and contact service", "resultGate": "service" } ], "required": true, "dependsOnStep": "step-6" } ], "consumables": [ { "name": "Guard or mounting screw if a replacement is needed", "specification": "Exact LST300 tool-type part identified by the manufacturer", "fit": "Supplied undamaged assembly, or a replacement confirmed through authorized service", "exclude": "Unverified guard, substitute screw, damaged tabs or housing threads", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E" } ], "maintenance": { "trigger": "Before use and after guard assembly or an impact", "intervalText": "Check guard condition before use. The manual does not give a screw torque or a replacement interval.", "basis": "manufacturer", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E" }, "fitChecks": [ { "id": "type", "label": "Model and tool type", "accepted": "matched", "options": [ { "value": "", "label": "Choose the version you can confirm" }, { "value": "matched", "label": "LST300 and the exact type on my label match my manufacturer manual and figures" }, { "value": "different", "label": "My type or manual figures differ" }, { "value": "unchecked", "label": "I have not checked the type number" }, { "value": "unknown", "label": "I am not sure" } ], "help": "Remove the battery before finding the label. Use the manufacturer model-and-type lookup; this site does not infer a type number from LST300 alone." }, { "id": "head", "label": "Cutting head", "accepted": "af100", "options": [ { "value": "", "label": "Choose the version you can confirm" }, { "value": "af100", "label": "Original AF-100 automatic-feed single-line head" }, { "value": "bump", "label": "Bump-feed head" }, { "value": "dual", "label": "Dual-line or modified head" }, { "value": "metal", "label": "Metal line or blade" }, { "value": "unknown", "label": "I am not sure" } ], "help": "Do not substitute a bump-feed procedure, dual-line spool or metal cutting attachment." } ] }, { "id": "lst300-cap-latch", "version": "2.0.0", "title": "Check a spool cap that will not latch", "deviceFamily": "garden", "intent": "Troubleshooting", "summary": "Inspect both retaining tabs, clear the slots and correct spool or line seating before considering a replacement cap.", "modelApplicability": [ "lst300-us" ], "modelDetails": [ { "id": "lst300-us", "family": "garden", "brand": "BLACK+DECKER", "series": "LST300", "label": "BLACK+DECKER LST300 · US · AF-100", "region": "US", "componentVersion": "Automatic-feed head with AF-100 spool; match model and tool type to manual", "manual": "lst300-manual", "help": "Remove the battery. Find LST300 and the adjacent type number on the tool label. Compare the guard, cap, spool and assembly figures with the linked LST300 manual. Use ServiceNet for your exact type if they differ. LST300 is not a bump-feed head.", "exclusions": [ "LST420 / LSTE525", "GH corded models", "Dual-line heads", "Metal line or blades", "Nonmatching tool type or modified head" ], "recognitionSource": "bd-manual-help" } ], "exclusions": [ "LST420 / LSTE525", "GH corded models", "Dual-line heads", "Metal line or blades", "Nonmatching tool type or modified head", "Unknown tool type or missing exact-type manual", "Bump-feed conversion" ], "prerequisites": [ "Release the trigger, let the head stop, engage the lock-off and remove the battery. Leave it removed throughout hands-on care. Keep fingers away from the sharp cutter on the guard.", "Read LST300 and the tool type from the label. Open the official model/type lookup and compare its manual and parts figures with your actual guard, single-line head and AF-100 spool. A readable model name alone does not establish the type. If the exact type manual cannot be obtained, or any figure differs, save a preparation record and stop." ], "tools": [ "Good lighting" ], "materials": [ "No replacement material needed for an intact tool" ], "checks": [ { "id": "safety", "prompt": "Is the battery removed, the trigger released and the cutting head stopped, with no battery damage, exposed wiring or faulty switch?", "sourceId": "lst300-manual", "sourceLocator": "English pp2–3 Safety; p8 Installing and removing the battery pack", "options": [ { "id": "yes", "label": "Yes", "next": "compatibility", "advice": "Keep the battery removed for every hands-on step." }, { "id": "no", "label": "No", "next": "service", "advice": "Stop using the tool for electrical, battery or switch damage. If you have only omitted battery removal, make the tool safe before restarting." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] }, { "id": "compatibility", "prompt": "Have you matched the label LST300 AND its exact tool type to the official lookup manual and its figures, with the original AF-100 automatic single-line head?", "sourceId": "bd-manual-help", "sourceLocator": "Official model/type lookup instructions; type is beside or below the model number", "options": [ { "id": "yes", "label": "Yes", "next": "check-1", "advice": "Record the label type and matching manual reference in the first step." }, { "id": "no", "label": "No", "next": "prepared", "advice": "An unknown type, unavailable type manual, different figures, bump-feed head or dual-line conversion blocks this procedure. Use manufacturer support to identify the correct instructions." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] }, { "id": "check-1", "prompt": "Do the cap and housing match the exact-type manual and RC-100 specification?", "sourceId": "lst300-manual", "sourceLocator": "English p9 Cutting line / Line feeding; Replacement accessories", "options": [ { "id": "yes", "label": "Yes", "next": "check-2", "advice": "Check the two retaining sides separately." }, { "id": "no", "label": "No", "next": "prepared", "advice": "Identify the correct cap before trying to fit it." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] }, { "id": "check-2", "prompt": "Are both cap tabs and housing slots intact, without cracks or distorted plastic?", "sourceId": "lst300-manual", "sourceLocator": "English pp9–10 Replacing the spool; figs M–O", "options": [ { "id": "yes", "label": "Yes", "next": "steps", "advice": "A seating problem may be corrected by cleaning and alignment." }, { "id": "no", "label": "No", "next": "service", "advice": "Broken retention parts need the correctly matched replacement or service; do not tape the cap down." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] } ], "branches": [ { "checkId": "safety", "optionId": "yes", "next": "compatibility" }, { "checkId": "safety", "optionId": "no", "next": "service" }, { "checkId": "safety", "optionId": "unsure", "next": "prepared" }, { "checkId": "compatibility", "optionId": "yes", "next": "check-1" }, { "checkId": "compatibility", "optionId": "no", "next": "prepared" }, { "checkId": "compatibility", "optionId": "unsure", "next": "prepared" }, { "checkId": "check-1", "optionId": "yes", "next": "check-2" }, { "checkId": "check-1", "optionId": "no", "next": "prepared" }, { "checkId": "check-1", "optionId": "unsure", "next": "prepared" }, { "checkId": "check-2", "optionId": "yes", "next": "steps" }, { "checkId": "check-2", "optionId": "no", "next": "service" }, { "checkId": "check-2", "optionId": "unsure", "next": "prepared" } ], "steps": [ { "title": "Record the exact tool and make it safe", "text": "Release the trigger, let the head stop, engage the lock-off and remove the battery. Leave it removed throughout hands-on care. Keep fingers away from the sharp cutter on the guard. Read LST300 and the tool type from the label. Open the official model/type lookup and compare its manual and parts figures with your actual guard, single-line head and AF-100 spool. A readable model name alone does not establish the type. If the exact type manual cannot be obtained, or any figure differs, save a preparation record and stop.", "observation": "The battery is physically separate from the tool; your label type and matching manual reference are written below.", "sourceId": "bd-manual-help", "sourceLocator": "Official model/type lookup instructions; type is beside or below the model number", "requiredFields": [ "tool-type", "matched-manual" ], "id": "step-1" }, { "title": "Inspect both retention points", "text": "Remove the cap by pressing its tabs. Compare each tab and each housing slot with fig O. Note trapped grass, a line caught under the cap, or a spool sitting high; do not bend the tabs.", "observation": "Each retaining point is intact and the obstruction, if any, is visible.", "sourceId": "lst300-manual", "sourceLocator": "English pp9–10 Replacing the spool; figs M–O", "id": "step-2" }, { "title": "Clear the slots and rim", "text": "Remove loose dirt and grass from the housing rim and slots. Keep the feed lever in place. If the lever is displaced and its fig N position is unclear, stop before refitting the spool.", "observation": "The cap seating surfaces are clear and the lever position is known.", "sourceId": "lst300-manual", "sourceLocator": "English pp9–10 Replacing the spool; figs M–O", "id": "step-3" }, { "title": "Correct the spool and line position", "text": "Guide the single line through the eyelet. Set the original compatible spool on the boss and rotate it slightly until fully seated. Move any line away from the cap rim.", "observation": "The spool rests fully down and no nylon crosses the cap seating surface.", "sourceId": "lst300-manual", "sourceLocator": "English pp9–10 Replacing the spool; figs M–O", "id": "step-4" }, { "title": "Align and snap the cap", "text": "Match both tabs with their slots and press the cap onto the housing until it snaps securely into place. Do not try to overcome resistance by striking the cap.", "observation": "Both tabs engage; a click on only one side is insufficient.", "sourceId": "lst300-manual", "sourceLocator": "English pp9–10 Replacing the spool; figs M–O", "id": "step-5" }, { "title": "Check retention and record the result", "text": "Gently check that the cap remains attached without holding its tabs in. Record whether cleaning or seating resolved the problem. If it still will not retain, keep the battery out and obtain service or a confirmed compatible cap.", "observation": "The cap stays retained on both sides, or the tool is clearly left out of use.", "sourceId": "lst300-manual", "sourceLocator": "English pp9–10 Replacing the spool; figs M–O", "id": "step-6" } ], "outcomeChecks": [ { "id": "outcome-1", "text": "Both tabs and slots are intact, clean and aligned.", "sourceId": "lst300-manual", "sourceLocator": "English pp9–10 Replacing the spool; figs M–O" }, { "id": "outcome-2", "text": "The spool is seated with an unobstructed eyelet path and the cap holds without force.", "sourceId": "lst300-manual", "sourceLocator": "English pp9–10 Replacing the spool; figs M–O" } ], "stopConditions": [ "Keep the battery removed if the exact type/manual match is unknown or parts differ from the figures.", "Stop for a damaged battery, exposed wiring, a faulty switch, cracked guard, broken spool/hub, damaged cap tabs or housing slots. Use an authorized service center. Never open the battery, motor housing or charger." ], "sources": [ { "id": "lst300-manual", "title": "BLACK+DECKER LST300 instruction manual (manufacturer document, retailer-hosted)", "url": "https://pdf.lowes.com/productdocuments/1935f26b-7448-4c95-b467-a223bb73d80f/63056925.pdf", "checkedAt": "2026-10-13", "use": "Safety, assembly, replacement spool/line, maintenance and troubleshooting. Match the tool type and figures before use.", "license": "Manufacturer copyright, hosted by Lowe’s. Facts paraphrased; no diagrams or manual redistributed.", "region": "US", "locator": "English pp9–10 Replacing the spool; figs M–O" }, { "id": "bd-manual-help", "title": "BLACK+DECKER: locate a manual using model and type number", "url": "https://support.blackanddecker.com/hc/en-us/articles/360012700118-How-can-I-get-a-parts-list-or-manual-for-my-tool", "checkedAt": "2026-10-13", "use": "Model/type number identification and authoritative ServiceNet lookup", "license": "Linked only.", "region": "US", "locator": "Official model/type lookup instructions; type is beside or below the model number" }, { "id": "lst300-product", "title": "BLACK+DECKER LST300 product and support", "url": "https://www.blackanddecker.com/products/lst300", "checkedAt": "2026-10-13", "use": "Model identity, automatic feed, AF-100 included spool", "license": "Linked only; no product photos reused.", "region": "US", "locator": "LST300 model identity; Automatic Feed Spool; Includes AF-100" } ], "assets": [ { "path": "/assets/garden/cap-latch.svg", "title": "Inspect tabs, seat spool, clear rim and latch both sides", "kind": "Original sequence schematic; compare the exact tool-type manual for shape and location", "sourceId": "lst300-manual" } ], "relatedIds": [ "lst300-line-spec", "lst300-spool-replace", "lst300-after-care" ], "specs": [], "updatedAt": "2026-10-13", "estimatedDuration": null, "group": "lst300-feed", "recordFields": [ { "id": "tool-type", "label": "Tool type exactly as printed on the label", "type": "text", "required": true, "dependsOnStep": "step-1" }, { "id": "matched-manual", "label": "Exact-type manual reference or link that you matched", "type": "text", "required": true, "dependsOnStep": "step-1" }, { "id": "latch-obstruction", "label": "What prevented the cap from seating?", "type": "select", "options": [ { "value": "grass", "label": "Loose grass or dirt" }, { "value": "line", "label": "Line trapped at the rim" }, { "value": "spool", "label": "Spool sitting high" }, { "value": "unknown", "label": "No clear cause" } ], "required": true, "dependsOnStep": "step-2" }, { "id": "both-tabs", "label": "Both tabs now hold the cap securely", "type": "checkbox", "required": true, "dependsOnStep": "step-5" }, { "id": "final-result", "label": "Result of this task", "type": "select", "options": [ { "value": "ready", "label": "Checks passed; ready for the stated next step" }, { "value": "follow-up", "label": "More preparation or a linked task is needed", "resultGate": "prepared" }, { "value": "service", "label": "Leave unused and contact service", "resultGate": "service" } ], "required": true, "dependsOnStep": "step-6" } ], "consumables": [ { "name": "Replacement spool cap", "specification": "BLACK+DECKER RC-100, confirmed against the exact tool-type parts list", "fit": "Original compatible AF-100 housing with undamaged slots", "exclude": "Damaged housing; caps with different tabs; forcing an apparently similar part", "sourceId": "lst300-manual", "sourceLocator": "English p9 Cutting line / Line feeding; Replacement accessories" } ], "maintenance": { "trigger": "Cap will not snap securely or was removed for line care", "intervalText": "Inspect when the stated condition occurs. The manual gives no fixed day or month interval.", "basis": "manufacturer", "sourceId": "lst300-manual", "sourceLocator": "English pp9–10 Replacing the spool; figs M–O" }, "fitChecks": [ { "id": "type", "label": "Model and tool type", "accepted": "matched", "options": [ { "value": "", "label": "Choose the version you can confirm" }, { "value": "matched", "label": "LST300 and the exact type on my label match my manufacturer manual and figures" }, { "value": "different", "label": "My type or manual figures differ" }, { "value": "unchecked", "label": "I have not checked the type number" }, { "value": "unknown", "label": "I am not sure" } ], "help": "Remove the battery before finding the label. Use the manufacturer model-and-type lookup; this site does not infer a type number from LST300 alone." }, { "id": "head", "label": "Cutting head", "accepted": "af100", "options": [ { "value": "", "label": "Choose the version you can confirm" }, { "value": "af100", "label": "Original AF-100 automatic-feed single-line head" }, { "value": "bump", "label": "Bump-feed head" }, { "value": "dual", "label": "Dual-line or modified head" }, { "value": "metal", "label": "Metal line or blade" }, { "value": "unknown", "label": "I am not sure" } ], "help": "Do not substitute a bump-feed procedure, dual-line spool or metal cutting attachment." } ] }, { "id": "lst300-handle-adjust", "version": "2.0.0", "title": "Adjust the auxiliary handle and height", "deviceFamily": "garden", "intent": "Maintenance", "summary": "Set the fitted handle and telescoping shaft for the manual’s stance, then verify both adjustments stay locked.", "modelApplicability": [ "lst300-us" ], "modelDetails": [ { "id": "lst300-us", "family": "garden", "brand": "BLACK+DECKER", "series": "LST300", "label": "BLACK+DECKER LST300 · US · AF-100", "region": "US", "componentVersion": "Automatic-feed head with AF-100 spool; match model and tool type to manual", "manual": "lst300-manual", "help": "Remove the battery. Find LST300 and the adjacent type number on the tool label. Compare the guard, cap, spool and assembly figures with the linked LST300 manual. Use ServiceNet for your exact type if they differ. LST300 is not a bump-feed head.", "exclusions": [ "LST420 / LSTE525", "GH corded models", "Dual-line heads", "Metal line or blades", "Nonmatching tool type or modified head" ], "recognitionSource": "bd-manual-help" } ], "exclusions": [ "LST420 / LSTE525", "GH corded models", "Dual-line heads", "Metal line or blades", "Nonmatching tool type or modified head", "Unknown tool type or missing exact-type manual", "Bump-feed conversion" ], "prerequisites": [ "Release the trigger, let the head stop, engage the lock-off and remove the battery. Leave it removed throughout hands-on care. Keep fingers away from the sharp cutter on the guard.", "Read LST300 and the tool type from the label. Open the official model/type lookup and compare its manual and parts figures with your actual guard, single-line head and AF-100 spool. A readable model name alone does not establish the type. If the exact type manual cannot be obtained, or any figure differs, save a preparation record and stop." ], "tools": [ "Good lighting" ], "materials": [ "No replacement material needed for an intact tool" ], "checks": [ { "id": "safety", "prompt": "Is the battery removed, the trigger released and the cutting head stopped, with no battery damage, exposed wiring or faulty switch?", "sourceId": "lst300-manual", "sourceLocator": "English pp2–3 Safety; p8 Installing and removing the battery pack", "options": [ { "id": "yes", "label": "Yes", "next": "compatibility", "advice": "Keep the battery removed for every hands-on step." }, { "id": "no", "label": "No", "next": "service", "advice": "Stop using the tool for electrical, battery or switch damage. If you have only omitted battery removal, make the tool safe before restarting." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] }, { "id": "compatibility", "prompt": "Have you matched the label LST300 AND its exact tool type to the official lookup manual and its figures, with the original AF-100 automatic single-line head?", "sourceId": "bd-manual-help", "sourceLocator": "Official model/type lookup instructions; type is beside or below the model number", "options": [ { "id": "yes", "label": "Yes", "next": "check-1", "advice": "Record the label type and matching manual reference in the first step." }, { "id": "no", "label": "No", "next": "prepared", "advice": "An unknown type, unavailable type manual, different figures, bump-feed head or dual-line conversion blocks this procedure. Use manufacturer support to identify the correct instructions." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] }, { "id": "check-1", "prompt": "Is the original auxiliary handle already fully attached with intact adjustment parts?", "sourceId": "lst300-manual", "sourceLocator": "English p8 Attaching the auxiliary handle; figs F–H", "options": [ { "id": "yes", "label": "Yes", "next": "check-2", "advice": "Use the adjustment button, not the initial-assembly buttons." }, { "id": "no", "label": "No", "next": "prepared", "advice": "Use Fit the supplied auxiliary handle for initial assembly; damaged parts need service." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] }, { "id": "check-2", "prompt": "Do the handle button and height collar release normally without damage or force?", "sourceId": "lst300-manual", "sourceLocator": "English pp8–9 Height adjustment / Operating the trimmer; figs I, J1", "options": [ { "id": "yes", "label": "Yes", "next": "steps", "advice": "Adjust while the battery stays removed." }, { "id": "no", "label": "No", "next": "service", "advice": "A binding or broken lock needs service before the tool is used." }, { "id": "unsure", "label": "Not sure", "next": "prepared", "advice": "Keep the battery removed. Save your preparation record and check the matching manual before continuing." } ] } ], "branches": [ { "checkId": "safety", "optionId": "yes", "next": "compatibility" }, { "checkId": "safety", "optionId": "no", "next": "service" }, { "checkId": "safety", "optionId": "unsure", "next": "prepared" }, { "checkId": "compatibility", "optionId": "yes", "next": "check-1" }, { "checkId": "compatibility", "optionId": "no", "next": "prepared" }, { "checkId": "compatibility", "optionId": "unsure", "next": "prepared" }, { "checkId": "check-1", "optionId": "yes", "next": "check-2" }, { "checkId": "check-1", "optionId": "no", "next": "prepared" }, { "checkId": "check-1", "optionId": "unsure", "next": "prepared" }, { "checkId": "check-2", "optionId": "yes", "next": "steps" }, { "checkId": "check-2", "optionId": "no", "next": "service" }, { "checkId": "check-2", "optionId": "unsure", "next": "prepared" } ], "steps": [ { "title": "Record the exact tool and make it safe", "text": "Release the trigger, let the head stop, engage the lock-off and remove the battery. Leave it removed throughout hands-on care. Keep fingers away from the sharp cutter on the guard. Read LST300 and the tool type from the label. Open the official model/type lookup and compare its manual and parts figures with your actual guard, single-line head and AF-100 spool. A readable model name alone does not establish the type. If the exact type manual cannot be obtained, or any figure differs, save a preparation record and stop.", "observation": "The battery is physically separate from the tool; your label type and matching manual reference are written below.", "sourceId": "bd-manual-help", "sourceLocator": "Official model/type lookup instructions; type is beside or below the model number", "requiredFields": [ "tool-type", "matched-manual" ], "id": "step-1" }, { "title": "Set a stable starting position", "text": "Support the tool with its cutter clear of you and the battery out. Identify the handle adjustment button shown as 13 in fig H and the height collar shown as 4 in fig I.", "observation": "You can distinguish the handle adjustment button from the two initial-assembly buttons.", "sourceId": "lst300-manual", "sourceLocator": "English p8 Attaching the auxiliary handle; figs F–H", "id": "step-2" }, { "title": "Choose the handle angle", "text": "Press the handle adjustment button and raise or lower the fitted auxiliary handle. Use the manual working stance as the reference: the front arm should be straight. Release the button so the handle holds.", "observation": "The handle stays at the selected angle once the button is released.", "sourceId": "lst300-manual", "sourceLocator": "English p8 Attaching the auxiliary handle; figs F–H", "id": "step-3" }, { "title": "Set the shaft length", "text": "Loosen the height collar in the arrow direction shown in fig I. Move the upper housing straight up or down, then turn the collar the opposite way until tight. Keep the normal trimming orientation for this task.", "observation": "The upper housing slides without twisting the tool into edging mode.", "sourceId": "lst300-manual", "sourceLocator": "English pp8–9 Height adjustment / Operating the trimmer; figs I, J1", "id": "step-4" }, { "title": "Check the working clearance without power", "text": "Hold the battery-removed tool in the stance pictured in fig J1. Set enough height to keep at least 24 inches (609.6 mm) between the guard and your feet; readjust the collar if necessary.", "observation": "The stance is balanced and the documented guard-to-foot clearance is available.", "sourceId": "lst300-manual", "sourceLocator": "English pp8–9 Height adjustment / Operating the trimmer; figs I, J1", "id": "step-5" }, { "title": "Verify both locks and record the fit", "text": "With the controls released, confirm that the handle stays in its angle and the shaft does not slip. Record the adjustment made; a slipping collar or handle is a stop condition. Continue to after-care before use.", "observation": "Both adjustments retain their position without the release being held.", "sourceId": "lst300-manual", "sourceLocator": "English pp8–9 Height adjustment / Operating the trimmer; figs I, J1", "id": "step-6" } ], "outcomeChecks": [ { "id": "outcome-1", "text": "The auxiliary handle locks with the front arm in the manual’s working position.", "sourceId": "lst300-manual", "sourceLocator": "English pp8–9 Height adjustment / Operating the trimmer; figs I, J1" }, { "id": "outcome-2", "text": "The tightened collar holds the selected length and allows the documented foot clearance.", "sourceId": "lst300-manual", "sourceLocator": "English pp8–9 Height adjustment / Operating the trimmer; figs I, J1" } ], "stopConditions": [ "Keep the battery removed if the exact type/manual match is unknown or parts differ from the figures.", "Stop for a damaged battery, exposed wiring, a faulty switch, cracked guard, broken spool/hub, damaged cap tabs or housing slots. Use an authorized service center. Never open the battery, motor housing or charger." ], "sources": [ { "id": "lst300-manual", "title": "BLACK+DECKER LST300 instruction manual (manufacturer document, retailer-hosted)", "url": "https://pdf.lowes.com/productdocuments/1935f26b-7448-4c95-b467-a223bb73d80f/63056925.pdf", "checkedAt": "2026-10-13", "use": "Safety, assembly, replacement spool/line, maintenance and troubleshooting. Match the tool type and figures before use.", "license": "Manufacturer copyright, hosted by Lowe’s. Facts paraphrased; no diagrams or manual redistributed.", "region": "US", "locator": "English pp8–9 Height adjustment / Operating the trimmer; figs I, J1" }, { "id": "bd-manual-help", "title": "BLACK+DECKER: locate a manual using model and type number", "url": "https://support.blackanddecker.com/hc/en-us/articles/360012700118-How-can-I-get-a-parts-list-or-manual-for-my-tool", "checkedAt": "2026-10-13", "use": "Model/type number identification and authoritative ServiceNet lookup", "license": "Linked only.", "region": "US", "locator": "Official model/type lookup instructions; type is beside or below the model number" }, { "id": "lst300-product", "title": "BLACK+DECKER LST300 product and support", "url": "https://www.blackanddecker.com/products/lst300", "checkedAt": "2026-10-13", "use": "Model identity, automatic feed, AF-100 included spool", "license": "Linked only; no product photos reused.", "region": "US", "locator": "LST300 model identity; Automatic Feed Spool; Includes AF-100" } ], "assets": [ { "path": "/assets/garden/handle-adjust.svg", "title": "Handle-angle and straight shaft-height adjustments", "kind": "Original sequence schematic; compare the exact tool-type manual for shape and location", "sourceId": "lst300-manual" } ], "relatedIds": [ "lst300-handle-fit", "lst300-edging-convert", "lst300-after-care" ], "specs": [], "updatedAt": "2026-10-13", "estimatedDuration": null, "group": "lst300-guard", "recordFields": [ { "id": "tool-type", "label": "Tool type exactly as printed on the label", "type": "text", "required": true, "dependsOnStep": "step-1" }, { "id": "matched-manual", "label": "Exact-type manual reference or link that you matched", "type": "text", "required": true, "dependsOnStep": "step-1" }, { "id": "adjustment-made", "label": "Handle and height changes made", "type": "text", "required": true, "dependsOnStep": "step-3" }, { "id": "locks-hold", "label": "Handle and height collar both hold their positions", "type": "checkbox", "required": true, "dependsOnStep": "step-5" }, { "id": "final-result", "label": "Result of this task", "type": "select", "options": [ { "value": "ready", "label": "Checks passed; ready for the stated next step" }, { "value": "follow-up", "label": "More preparation or a linked task is needed", "resultGate": "prepared" }, { "value": "service", "label": "Leave unused and contact service", "resultGate": "service" } ], "required": true, "dependsOnStep": "step-6" } ], "consumables": [], "maintenance": { "trigger": "A different user or an unsuitable working stance requires adjustment", "intervalText": "Inspect when the stated condition occurs. The manual gives no fixed day or month interval.", "basis": "manufacturer", "sourceId": "lst300-manual", "sourceLocator": "English pp8–9 Height adjustment / Operating the trimmer; figs I, J1" }, "fitChecks": [ { "id": "type", "label": "Model and tool type", "accepted": "matched", "options": [ { "value": "", "label": "Choose the version you can confirm" }, { "value": "matched", "label": "LST300 and the exact type on my label match my manufacturer manual and figures" }, { "value": "different", "label": "My type or manual figures differ" }, { "value": "unchecked", "label": "I have not checked the type number" }, { "value": "unknown", "label": "I am not sure" } ], "help": "Remove the battery before finding the label. Use the manufacturer model-and-type lookup; this site does not infer a type number from LST300 alone." }, { "id": "head", "label": "Cutting head", "accepted": "af100", "options": [ { "value": "", "label": "Choose the version you can confirm" }, { "value": "af100", "label": "Original AF-100 automatic-feed single-line head" }, { "value": "bump", "label": "Bump-feed head" }, { "value": "dual", "label": "Dual-line or modified head" }, { "value": "metal", "label": "Metal line or blade" }, { "value": "unknown", "label": "I am not sure" } ], "help": "Do not substitute a bump-feed procedure, dual-line spool or metal cutting attachment." } ] } ], "consumables": [ { "name": "Guard or mounting screw if a replacement is needed", "specification": "Exact LST300 tool-type part identified by the manufacturer", "fit": "Supplied undamaged assembly, or a replacement confirmed through authorized service", "exclude": "Unverified guard, substitute screw, damaged tabs or housing threads", "sourceId": "lst300-manual", "sourceLocator": "English p8 Installing the guard; figs D–E", "taskId": "lst300-guard-check" }, { "name": "Replacement spool cap", "specification": "BLACK+DECKER RC-100, confirmed against the exact tool-type parts list", "fit": "Original compatible AF-100 housing with undamaged slots", "exclude": "Damaged housing; caps with different tabs; forcing an apparently similar part", "sourceId": "lst300-manual", "sourceLocator": "English p9 Cutting line / Line feeding; Replacement accessories", "taskId": "lst300-cap-latch" } ], "sources": [ { "id": "lst300-manual", "title": "BLACK+DECKER LST300 instruction manual (manufacturer document, retailer-hosted)", "url": "https://pdf.lowes.com/productdocuments/1935f26b-7448-4c95-b467-a223bb73d80f/63056925.pdf", "checkedAt": "2026-10-13", "use": "Safety, assembly, replacement spool/line, maintenance and troubleshooting. Match the tool type and figures before use.", "license": "Manufacturer copyright, hosted by Lowe’s. Facts paraphrased; no diagrams or manual redistributed.", "region": "US", "locator": "English p8 Installing the guard; figs D–E; English pp9–10 Replacing the spool; figs M–O; English pp8–9 Height adjustment / Operating the trimmer; figs I, J1" }, { "id": "bd-manual-help", "title": "BLACK+DECKER: locate a manual using model and type number", "url": "https://support.blackanddecker.com/hc/en-us/articles/360012700118-How-can-I-get-a-parts-list-or-manual-for-my-tool", "checkedAt": "2026-10-13", "use": "Model/type number identification and authoritative ServiceNet lookup", "license": "Linked only.", "region": "US", "locator": "Official model/type lookup instructions; type is beside or below the model number" }, { "id": "lst300-product", "title": "BLACK+DECKER LST300 product and support", "url": "https://www.blackanddecker.com/products/lst300", "checkedAt": "2026-10-13", "use": "Model identity, automatic feed, AF-100 included spool", "license": "Linked only; no product photos reused.", "region": "US", "locator": "LST300 model identity; Automatic Feed Spool; Includes AF-100" } ] }