How to fix Homelite Trimlite UT20763 Trimmer when it starts but will not idle?
- KKelly RussoJul 28, 2025
If your Homelite Trimmer engine starts but won't idle, turn the idle speed screw clockwise to increase the idle.

How to fix Homelite Trimlite UT20763 Trimmer when it starts but will not idle?
If your Homelite Trimmer engine starts but won't idle, turn the idle speed screw clockwise to increase the idle.
How to check spark on Homelite Trimmer?
To check for spark on your Homelite Trimmer: Disconnect the spark plug wire, reattach it, and lay the spark plug on the metal cylinder. Pull the starter rope and watch for a spark at the spark plug tip. If there's no spark, try again with a new spark plug. The cause of the problem is 'no spark'.
Why won't the string advance on my Homelite Trimmer?
If your Homelite Trimmer string won't advance, try these solutions: 1. Lubricate the string with silicone spray if it's welded to itself. 2. Install more string if there's not enough on the spool. 3. Pull the strings while alternately pressing down on and releasing the spool retainer if the string is worn too short. 4. Advance string at full throttle if engine speed is too slow.
What to do if Homelite Trimmer engine is flooded?
If your Homelite Trimmer engine won't start, it might be flooded. Remove the spark plug and turn the trimmer so the spark plug hole faces the ground. Move the choke lever to “RUN” and pull the starter cord 10 to 15 times to clear excess fuel. Clean and reinstall the spark plug. Then, pull the starter three times with the choke lever at “RUN”. If it still doesn't start, move the choke lever to “CHOKE” and try the normal starting procedure again. If the engine still fails to start, repeat the procedure with a new spark plug. The cause of the problem is 'flooded engine'.
How to prevent grass from wrapping around Homelite Trimlite UT20763 Trimmer?
To resolve grass wrapping around the shaft housing and stringhead of your Homelite Trimmer, cut tall grass from the top down and operate the trimmer at full throttle. The causes are cutting tall grass at ground level and operating the trimmer at part throttle.
What to do if Homelite Trimmer engine smokes and doesn't reach full speed?
If your Homelite Trimmer engine does not reach full speed and emits excessive smoke, cut tall grass from the top down and operate the trimmer at full throttle.
| Engine Type | 2-Cycle |
|---|---|
| Displacement | 25cc |
| Fuel Capacity | 12 oz |
| Line Diameter | 0.080 inches |
| Power Source | Gasoline |
| Shaft Type | Straight |
| Type | Gas-powered |
| Cutting Swath | 17 inches |
| Cutting Width | 17 in |
Essential safety guidelines for operating the trimmer.
Precautions specific to using the string trimmer safely.
Steps for safely removing and inspecting the product from its packaging.
List of components included in the trimmer package.
Instructions for attaching the front handle to the trimmer.
How to install the grass deflector, with or without an edger guide.
Steps to assemble and attach the edger guide for specific models.
Specific instructions for attaching the grass deflector on Easy Reach models.
Guide on mixing fuel and safely refueling the trimmer.
Proper technique for holding and using the trimmer for effective cutting.
Methods to extend trimmer line, including tap advance and manual techniques.
Advice for efficient and safe cutting practices with the trimmer.
How to use the edger guide for trimming along edges and borders.
Step-by-step instructions for starting and stopping the trimmer engine.
Procedure for replacing the trimmer line spool and associated parts.
Instructions on how to cut and install new trimmer line.
Guidance on cleaning carbon deposits from the exhaust system.
How to clean or replace the spark arrestor for optimal performance.
Steps for cleaning or replacing the air filter for engine efficiency.
Information on fuel cap function and spark plug replacement.
Proper procedures for storing the trimmer for extended periods.
Details of the standard limited warranty for Homelite products.
Specific warranty coverage for the engine's emission control components.
Guidance on identifying and obtaining replacement parts for the trimmer.












Loading...