Wood Doctor
Edwin
- Local time
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- User ID
- 846
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- Feb 9, 2016
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Thanks for quick response, but unfortunately, that is exactly what i did.View attachment 278361From the 650 service manual.
If the idle screw has to be all the way out or the chain spins, you either have a bad clutch drum bearing, bad clutch springs, or your throttle plate is not closing all the way. If you’re sure the first two are OK, I would loosen the throttle plate and snap the mechanism shut a few times and re-tighten the screw. Or you still have a small air leakLA screw has to be all the way out with 1 turn out on the L, otherwise chain spins.
tacho is on the way, but im pretty sure rpm is around 2500
Turning L while idling makes a difference, so nothing is "stuck", and rpm doesnt change, check valve should be working
I was literally throwing saw in every single rotation and rpm doesnt change at all.
4 stroking when richened is a no problem, so im very-very sure no air leaks.
Is that hole on a valve plate maybe too big? so too much air goes through?
Did you loosen the screw? If the butterfly isn’t centered perfectly in the bore with the tapered edges sitting the right way, it won’t shut completely and would cause your symptomsTried snapping throttle plate multiple times, no difference.
Yep, barely any light comes through from a flashlight.Did you loosen the screw? If the butterfly isn’t centered perfectly in the bore with the tapered edges sitting the right way, it won’t shut completely and would cause your symptoms
The butterfly needs rotated about 2-3° counter clockwise. Look at the alignment marks
This took me forever to understand, and i may still not understand,View attachment 278361From the 650 service manual.