Question about Poulan Pro Gas Pole Pruner Trimmer - PP338PT
Saw will not stay running when put on run.
Posted by Anonymous on
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Posted on Jan 02, 2017
It is running lean. There is an air leak somewhere allowing to much air into the cylinder or crankcase. Continuing to operate lean may cause failure. If fuel delivery lines have no pin holes or cracks probably time for some professional help (pressure tests). Remove clean and reinstall the muffler (carbon fouling can also cause this). If the saw cannot exhale, it cannot inhale. HTH
Posted on Jan 23, 2010
SOURCE: poulan saw wont run
Clean the muffler spark arrestor screen and check the cylinder port for carbon build-up at the upper edge. Try presetting both carburetor H and L adjustments (from lightly CW stops) 1-1/2 turns CCW each. Start the engine and allow to warm up. Pull the throttle wide open and adjust H CW until the engine speed increases, but still 4-stroking. Correct setting is when the engine 4-strokes, but immediately 2-strokes when cutting. Allow to idle and adjust L for smoother running, yet allows the engine to 'follow the throttle'. Set idle speed to keep the engine running, but doesn't try to move the chain. You may have to look closer at your carburetor if the above doesn't help. Go to:
for an excellent article (but poor pix) on Walbro carburetors, but related to most all 2-stroke carburetors. Hope this helps!
Posted on Feb 24, 2010
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