Yardworks LST22012-1 - User Manual

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features
Safety Precautions

The Yardworks 12-Inch 20V Lithium-ion String Trimmer (Model LST22012-1) is a cordless electric gardening appliance designed for trimming grass and weeds. It comes with one 20V 2.0Ah Lithium-ion battery and a CA Compliant Charger (Model No. CHL82000-1). The device is engineered for dependability, ease of operation, and operator safety, promising years of rugged, trouble-free performance with proper care.

Function Description:

The string trimmer is primarily used for cutting grass and weeds. It operates with a 20V 2.0Ah DC lithium-ion battery, providing cordless convenience. The trimmer features an automatic feed system that extends the nylon line as it wears during operation. It also includes an edging function, allowing the user to rotate the lower housing 180° for precise edge trimming. The height of the trimmer can be adjusted to suit the user's preference by releasing and locking a clamp on the telescoping tube. To operate, the user must push a safety lock-off button with their thumb and then squeeze the trigger. Releasing the trigger turns the tool off.

Important Technical Specifications:

Input: 20 V / 2.0 Ah, DC only
Speed: 8000 RPM
Cutting Width: 12 inches
Weight: 5 lb.
String Type: 0.065" single line
Feed System: Automatic Feed - Edging Function
Battery: 20V 2.0Ah Lithium-ion (Model BL82120-1)
Charger: CA Compliant (Model CHL82000-1)

Usage Features:

Battery Operation: The trimmer is powered by a removable 20V lithium-ion battery pack. The battery must be charged before first use, and two to three initial charging/discharging cycles may be required to achieve maximum run time/capacity.
Safety Lock-off Button: A safety lock-off button prevents unintentional starting. It must be pressed before the trigger can be squeezed.
Height Adjustment: The telescoping tube allows for adjustable height, ensuring comfortable use for different operators.
Edging Function: The lower housing can be rotated 180° to convert the trimmer into an edger for precise lawn edges. This involves removing the battery, releasing the height adjustment shaft lock, rotating the metal shaft and lower housing, relocking the shaft, and lifting the plant protection bow.
Automatic Line Feed: The trimmer automatically feeds new line as the existing line wears down. This occurs with each stop and start of the switch trigger, extending the line by approximately 1/4 inch until it reaches the length of the grass deflector blade.
Manual Line Feed: If the line becomes too short due to cutting abrasive objects, it can be manually extended by removing the battery pack, pressing the line-feeding button, and pulling the line out. Each press releases approximately 1/4 inch of line.
Ergonomic Design: Features a front handle (auxiliary handle) and a rear handle for comfortable grip and control.
Wire Guide: Includes a wire guide to help protect the line from obstacles.
Guard: A safety guard is included and must be attached before operation to protect against thrown debris.

Maintenance Features:

Battery Charging: The battery pack should be charged with Yardworks 20V Chargers only. Initial charge time is at least 80 minutes. The charger operates best between 39°F and 104°F. Fully charge the battery every 90 days, and before storage.
Battery Storage: Store the battery in a cool, dry place, indoors, and fully charged. Avoid storing in a fully discharged condition to prevent permanent damage.
Cleaning: The tool should be cleaned with mild soap and a damp cloth after detaching the battery. Avoid contact with brake fluids, gasoline, petroleum-based products, penetrating oils, or other chemicals that can damage plastic parts. Do not immerse any part of the tool in liquid.
Spool Replacement/Clearing Jams: Instructions are provided for clearing jammed or tangled lines and for replacing the spool. This involves turning off the trimmer, removing the battery, pressing release tabs on the spool cover, and removing the spool.
Rewinding Spool from Bulk Line: Detailed steps are provided for winding bulk 0.065" diameter nylon line onto the spool, ensuring it is wound snugly and evenly in the direction of the arrow.
General Inspection: Regularly inspect the trimmer for damaged parts, especially the guard, handles, and any other components that may affect operation. Any damage should be repaired by a qualified individual using identical replacement parts.
Troubleshooting Guide: A troubleshooting section helps diagnose common issues such as the unit not running, line not feeding, line not cutting off, and battery not charging, offering possible causes and solutions.
Battery Disposal: Lithium-ion batteries must be recycled or disposed of properly, not in ordinary trash. The RBRC seal indicates that recycling costs have been paid, and assistance for disposal can be found by calling 1-800-8BATTERY.

Safety Precautions:

Always read and understand the owner's manual before use.
Wear appropriate personal hearing protection, safety glasses with side shields or goggles (ANSI Z87.1 standard), and protective footwear.
Wear long pants and protective hair covering.
Keep children, visitors, and pets away from the work area.
Do not wear loose clothing or jewelry.
Remove the battery from the trimmer when not in use, servicing, or cleaning.
Do not operate the trimmer without the guard attached.
Avoid dangerous environments (rain, damp/wet locations, gaseous/explosive atmospheres).
Ensure proper footing and balance; do not overreach.
Do not force the string trimmer; let it work at its designed rate.
Stay alert and do not operate when tired or under the influence of substances.
Store the trimmer indoors in a dry, high, or locked-up place, out of reach of children.
Inspect the area to be trimmed and remove any wire, cord, or string-like objects that could become entangled.
Do not use any cutting attachments other than the manufacturer's recommended replacement string.
Do not expose the battery pack or appliance to fire or excessive temperatures above 130°C (265°F).
Do not modify or attempt to repair the appliance or battery pack except as indicated in the instructions.
California Proposition 65 warning: This product contains chemicals known to cause cancer, birth defects, or other reproductive harm. Wear approved safety equipment to reduce exposure to dust.