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Bill[_9_] Bill[_9_] is offline
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Default Stihl Chainsaw running too fast

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It's an older saw I bought at a garage sale. Runs well, except it
runs way too fast. There is no idle when I release the trigger.
However, if I push downward on the trigger button, it slows down to
idle. In other words, the problem is in the trigger itself, not a
carb adjustment screw.

My question is what is causing the trigger to not slow down. It's in
the handle, so I'm not sure how to even get to it. When I remove
the
top air cleaner cover, I can see the rod that goes to the carb from
the trigger, and when I apply downward pressure on the trigger that
rod is pulled back and the saw slows.

Is this a common problem on these saws? How do I fix it?


On my Stihl chainsaws, choke is by moving the lever all the way down,
then next up is fast idle, then next up from that is regular idle,
then next up is off.

When it is in fast idle and you pull the throttle trigger, it snaps
from fast idle to regular idle.

To fix this problem on my saw, you replace the lever which also comes
with a metal spring loaded piece which is part of an electrical kill
switch, but that spring mechanism/switch also plays the most important
part with the fast idle release.

It can be removed on my saw by removing the carburetor cover and a
screw under the handle. Then removing the connecting rod to the carb.
Also a screw on the side for the electric switch. It snaps out and the
electric switch slides out.

You may have a older or different model from mine. Go to the following
site and ask there. Helps if you give them the model number or post a
picture.

http://www.arboristsite.com/chainsaw