Inspect the tool after a strike or entanglement ID: lst300-impact-check Version: 2.0.0 Model: BLACK+DECKER LST300 · US · AF-100 Region: US Parts: Automatic-feed head with AF-100 spool; match model and tool type to manual Not covered: 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 MATCH YOUR VERSION Model and tool type: LST300 and the exact type on my label match my manufacturer manual and figures 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. Cutting head: Original AF-100 automatic-feed single-line head Do not substitute a bump-feed procedure, dual-line spool or metal cutting attachment. PREPARE [ ] 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. [ ] Tool: Good lighting [ ] Material: No replacement material needed for an intact tool STOP 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. CONSUMABLE FIT CHECK ROUTE safety: Is the battery removed, the trigger released and the cutting head stopped, with no battery damage, exposed wiring or faulty switch? Yes -> compatibility: Keep the battery removed for every hands-on step. No -> service: Stop using the tool for electrical, battery or switch damage. If you have only omitted battery removal, make the tool safe before restarting. Not sure -> prepared: Keep the battery removed. Save your preparation record and check the matching manual before continuing. compatibility: 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? Yes -> check-1: Record the label type and matching manual reference in the first step. No -> prepared: 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. Not sure -> prepared: Keep the battery removed. Save your preparation record and check the matching manual before continuing. check-1: Has the head fully stopped and can the outside of the tool be inspected safely with the battery removed? Yes -> check-2: Keep the tool unused during the inspection. No -> prepared: Keep clear of any moving head or hazardous object and arrange safe assistance. Not sure -> prepared: Keep the battery removed. Save your preparation record and check the matching manual before continuing. check-2: Is there no already-visible broken guard, hub, spool, switch or exposed wiring? Yes -> steps: Continue with a careful external inspection; absence of obvious damage is not proof of internal condition. No -> service: The manual requires damage to be repaired before further operation; do not attempt a test run. Not sure -> prepared: Keep the battery removed. Save your preparation record and check the matching manual before continuing. CARE STEPS (only when the route reaches steps) [ ] 1. Record the exact tool and make it safe 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. Look for: The battery is physically separate from the tool; your label type and matching manual reference are written below. Source: bd-manual-help, Official model/type lookup instructions; type is beside or below the model number [ ] 2. Record the event Record whether the line struck or became entangled with an object and where contact occurred. Keep the battery out and note any previously observed sudden vibration, stop or control problem. Look for: The incident and original symptom are preserved without another powered attempt. Source: lst300-manual, English pp2–3 Safety; p8 Installing and removing the battery pack [ ] 3. Inspect guard and retention Look for cracks, missing material or displacement in the guard, spool cap and visible housing. Check both cap tabs and the guard mounting. A broken hub or spool means the tool must remain unused. Look for: Visible retaining parts are intact or a specific damaged area is recorded. Source: lst300-manual, English pp2–3 Safety; p8 Installing and removing the battery pack [ ] 4. Inspect accessible movement and mounting Look for visible misalignment, binding, broken parts and loose mounting. Do not pull on embedded wire, use force on a jam or open the motor housing. An object that cannot be freed safely needs service. Look for: Any binding, misalignment or inaccessible entanglement is identified as a stop condition. Source: lst300-manual, English pp2–3 Safety; p8 Installing and removing the battery pack [ ] 5. Check the exterior and controls Inspect the shaft, handle, collar and battery exterior without opening them. If the trigger previously failed to turn the trimmer on or off, the manual requires repair; do not reinstall the battery to reproduce that fault. Look for: The record includes the control history and visible condition, rather than a powered switch experiment. Source: lst300-manual, English pp2–3 Safety; p8 Installing and removing the battery pack [ ] 6. Choose the next action Any damage, binding or uncertainty calls for an authorized service center before further use. If the external inspection finds no issue, complete the after-care checks before choosing a normal-use observation; stop if a symptom appears. Look for: The saved result identifies service needed or the remaining verification task, with no claim about unseen internal parts. Source: lst300-manual, English pp2–3 Safety; p8 Installing and removing the battery pack OBSERVATIONS Tool type exactly as printed on the label (required): ____________________ Exact-type manual reference or link that you matched (required): ____________________ Object struck or entanglement and observed symptom (required): ____________________ Damage found, or visible areas checked with no issue found (required): ____________________ Result of this task (required): ____________________ Choices: Checks passed; ready for the stated next step / More preparation or a linked task is needed [further care/preparation needed] / Leave unused and contact service [service required] RESULT CHECKS [ ] All visible damage, binding or control concerns are recorded before any possible reuse. [ ] Damaged or uncertain equipment remains unused; a clear external inspection proceeds only to after-care. NEXT CARE Immediately after a strike or entanglement Stop immediately, remove the battery and check for damage; repair damage before further use. Basis: manufacturer Source: lst300-manual, English pp2–3 Safety; p8 Installing and removing the battery pack Record preparation, maintenance readiness, problem located or service needed. This is not proof of a physical repair. SOURCES BLACK+DECKER LST300 instruction manual (manufacturer document, retailer-hosted) https://pdf.lowes.com/productdocuments/1935f26b-7448-4c95-b467-a223bb73d80f/63056925.pdf English p3 Damage to unit; Check damaged parts; Switch warning Checked: 2026-10-13 Manufacturer copyright, hosted by Lowe’s. Facts paraphrased; no diagrams or manual redistributed. BLACK+DECKER: locate a manual using model and type number https://support.blackanddecker.com/hc/en-us/articles/360012700118-How-can-I-get-a-parts-list-or-manual-for-my-tool Official model/type lookup instructions; type is beside or below the model number Checked: 2026-10-13 Linked only. BLACK+DECKER LST300 product and support https://www.blackanddecker.com/products/lst300 LST300 model identity; Automatic Feed Spool; Includes AF-100 Checked: 2026-10-13 Linked only; no product photos reused.