stihl chainsaw carb adjust


Old 11-29-05, 06:14 AM
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stihl chainsaw carb adjust

I just bought a used Stihl 021 through Ebay (I know, it's risky) and the carb was badly out of adjustment when it arrived (idled too fast and would not run at full throttle). I adjusted the carb and got it running satisfactorily, but when I cut with it for a few minutes, it gets out of adjustment again, like maybe the vibration from the engine is causing the adjustment screws to move. Any suggestions?
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Old 11-29-05, 09:14 AM
Join Date: Nov 2005
Location: North Carolina
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do the screws have tension springs on them ? do they actually move or does it just take more adjustment to keep the saw running? you could have a crankcase seal leak at temperature causing the mixture to lean out.

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