Quck answer
To set the high and low adjustments on a Homelite chainsaw, follow these steps:
1. Start by locating the adjustment screws on the chainsaw. The high adjustment screw is usually marked with an “H” and the low adjustment screw with an “L.”
2. Use a small flathead screwdriver or a special adjustment tool to turn the screws. Turning the screws clockwise will lean the fuel mixture, while turning them counterclockwise will enrich it.
3. Start by setting the low adjustment screw. Turn it counterclockwise until it stops, then slowly turn it clockwise until the engine runs smoothly at idle.
4. Next, set the high adjustment screw. Again, turn it counterclockwise until it stops, then slowly turn it clockwise until the engine reaches its maximum RPMs without hesitation or bogging down.
5. Test the chainsaw’s performance by cutting a piece of wood. If the engine stalls when idling or bogs down under load, make small adjustments to the screws until it runs smoothly.
Remember, it’s important to consult the chainsaw’s manual for specific instructions and to ensure you are making the adjustments within the recommended range.
Homelite chainsaw carburetors are equipped with adjustable screws for low and high speeds, allowing you to control the air-fuel mixture. Although the factory-set limits are for safety, you may need to adjust the screws after a carburetor cleaning to ensure optimal chainsaw performance. It is important to have the proper equipment and knowledge to avoid damaging the engine when performing this operation.
Start with Cleaning the Air Filter
Using a screwdriver, open the cylinder cover. Remove the air filter and clean it by tapping it against your palm and wiping off dust with a rag. If needed, wash the filter in warm, soapy water for extra cleaning. Use a rag to wipe the area around the filter. Open the front of the muffler with a screwdriver and take out the spark arrester screen. Clean both the muffler and screen using a rag and brush. Once the filter is dry, put it back into the chainsaw.
Ensure Fresh Fuel
Fill the chainsaw tank with freshly mixed chainsaw fuel. Start the chainsaw and let it run at a high idle for five to ten minutes to reach operating temperatures. This is necessary for proper adjustment. Do not attempt to adjust the carburetor on a cold engine.
Adjust the “L” Screw
To adjust the “Lo” screw on the Homelite chainsaw carburetor, turn it to the left. Stop turning the screw when the engine starts to whine. Turn the screw as far as it can easily turn to the right and observe the effect on the engine’s sound. Find a setting between the lowest and highest positions that provides optimal adjustment, where the engine sounds its best. This may require practice and a keen ear to discern the cleanest and smoothest engine sounds.
Idle Adjustment for Homelite Chainsaws
Adjust the idle speed screw, marked as “T,” by turning it. If the chainsaw starts and runs without idling, turn the screw clockwise to increase the idle speed. If the chain moves while the chainsaw is idling, turn the screw counterclockwise. The chain should not spin while the saw is idling.
Set the High-Speed Screw
Adjust the high-speed screw on the Homelite chainsaw carburetor as needed. Set the high-speed screw by adjusting the screw marked “H.” Pull the trigger to fully open the throttle. Turn the screw to the left and observe the engine’s performance. Stop turning the screw when the engine begins to make a high-pitched whine.
Turn the screw to the right and observe the performance. Find a setting in the middle that provides the best engine sound. Some Homelite chainsaws have a plastic stopping device that limits the adjustment of the low and high-speed screws. If the chainsaw’s speed cannot be properly adjusted with a slight twist of either screw, it is recommended to take the chainsaw to an authorized repair center. Avoid overtightening the screws or forcing them beyond their limited adjustment range.
