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Hi Charles Gregory Before you remove or try to adjust your low and high speed jets you should always count the number of turns it takes to lightly seat the idle mixture screw and high speed needle adjusting screws. Be sure to write the number of turns down on a piece of paper so you will know how many turns from the seated position to open the jets when you go to reinstall them, or if you remove them for cleaning or replacement. If you have aready tried to adjust them then the adjustments below should get it running for you for final adjustment when warm. Normally you will adjust your idle jet to 1/2-3/4 turn open from the bottom seated position. Then you will re-adjust the low speed of the engine when the engine is warm by turning the idle screw in or out till the engine runs smoothly at idle speed, around 1200 RPM. The high speed jet is adjusted to 1 1/2- 1 3/4 open from the bottom seated position, after the engine is warm. Then re-adjusted by turning the High Speed jet adjustment screw in or out till the motor runs smoothly at high speed. Alway use the "lightly seated" method if you have not changed the screw settings. Please take time to rate me Bud
Turn both jet screws CW to stops (lightly), then back each out CCW 1-1/2 turns. This is a basic setting and should allow the engine to start and run. Start the engine and allow to warm up, then pull the throttle full on. Turn the H needle CW until the engine starts to speed up, but still 4-strokes. Correct adjustment is when the engine 4-strokes running free, but immediately 2-strokes when cutting. Release the throttle and adjust L needle so that the engine idles fairly well, but allows the engine to 'follow the throttle'. Adjust idle speed screw so that the chain stops turning, but the engine continues to run. Hope this helps!
Make sure the air cleaner is clean or replaced and the muffler is not plugged. Set both screws to CW stops (lightly), then back out each CCW 1-1/2 turns. Start engine and allow to warm up. Pull throttle full on, and adjust H needle CW until the engine speeds up, but still 4-strokes. The correct point is when the engine 4-strokes, but 2-strokes when a cutting load is applied. Let idle and adjust L for smoother running, yet allows the engine to 'follow the throttle'. Adjust idle speed screw so that engine continues to run, but doesn't try to move the chain. Hope this helps.
Initial setting for a Husqvarna; "H" and "L" screws at 1 turn CCW form lightly seated. Then tune for performance like this: Carburetor Adjustment by Madsens.com http://www.madsens1.com/saw%20carb%20tune.htm CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly. Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run. There are 2 wav (sound - idle & full – may not be highlighted) files that I find most helpful, I think you will too. HTH Lou
When u adj a kohler carb you adj fuel not air. Always adj the high speed then low speed. Then adj the curb idle. 1.5 turns out is a good starting point. Then tweak it after its warmed up. Hope this helps
Should b 2 screws on side of carb. One is low speed adj and one is high speed adjust. Turn screws all the way in until they bottom, not too tight--turn them out 1 1/2 turns. Start saw and adjust the idle screw by turning in until it starts to sputter and turn out until is idles smooth same for hight speed only adjust at high speed