LST300 guard & setup check
ID: lst300-before-use
Version: 2.0.0
Confirm the guard, cap and handle before reinstalling the battery for normal use.

OUTCOME
A battery-removed setup record with clear no-go findings.
Round result: Not recorded

MODEL
BLACK+DECKER LST300 · US · AF-100
US
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

PREPARE
[ ] Good lighting
[ ] The original matching guard and cap
[ ] Battery removed throughout setup

TASK ORDER
1. Inspect and secure the guard
Inspect the correct guard and sharp line cutter with the battery removed.
Task lst300-guard-check / 2.0.0
https://csl-14-small-repair.pages.dev/tasks/lst300-guard-check/
Recorded result: Not recorded

2. Check a spool cap that will not latch
Check the original cap tabs and full seating.
Task lst300-cap-latch / 2.0.0
https://csl-14-small-repair.pages.dev/tasks/lst300-cap-latch/
Recorded result: Not recorded

3. Adjust the auxiliary handle and height
Set and lock the adjustable handle using the matching manual.
Task lst300-handle-adjust / 2.0.0
https://csl-14-small-repair.pages.dev/tasks/lst300-handle-adjust/
Recorded result: Not recorded

TASK OBSERVATIONS
Inspect and secure the guard
Result: Not recorded
Service needed: Not recorded
Steps recorded: 0 / 6
Revision: 0
Route: 
Tool type exactly as printed on the label: Not recorded
Exact-type manual reference or link that you matched: Not recorded
Guard at the start: Not recorded
Guard and supplied screw are firmly secured: Not confirmed
Result of this task: Not recorded

Check a spool cap that will not latch
Result: Not recorded
Service needed: Not recorded
Steps recorded: 0 / 6
Revision: 0
Route: 
Tool type exactly as printed on the label: Not recorded
Exact-type manual reference or link that you matched: Not recorded
What prevented the cap from seating?: Not recorded
Both tabs now hold the cap securely: Not confirmed
Result of this task: Not recorded

Adjust the auxiliary handle and height
Result: Not recorded
Service needed: Not recorded
Steps recorded: 0 / 6
Revision: 0
Route: 
Tool type exactly as printed on the label: Not recorded
Exact-type manual reference or link that you matched: Not recorded
Handle and height changes made: Not recorded
Handle and height collar both hold their positions: Not confirmed
Result of this task: Not recorded

SEASON & REMINDER
At the start of each use: inspect the protective parts. After a strike or damaged part, stop and use the service route.
This reminder supplements the pre-use checks; it does not extend the life of a damaged guard.
Reminder: Choose your own date
User-selected reminder; task-specific manufacturer triggers remain authoritative

CONSUMABLE FIT
Guard or mounting screw if a replacement is needed: 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

Replacement spool cap: 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

Task records describe observations, not a physical repair certification.

SOURCES
BLACK+DECKER LST300 instruction manual (manufacturer document, retailer-hosted)
https://pdf.lowes.com/productdocuments/1935f26b-7448-4c95-b467-a223bb73d80f/63056925.pdf
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

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

BLACK+DECKER LST300 product and support
https://www.blackanddecker.com/products/lst300
LST300 model identity; Automatic Feed Spool; Includes AF-100