I recently replaced a clutch on an MS 500i which had the problem of the chain turning at idle, I removed the clutch which in my opinion had slightly worn springs and I replaced it with a new one, as soon as it was turned on it seemed that the problem had resolved itself but after a couple of accelerations the chain was still running at idle as if the idle was slightly high, I tried to make a couple of cuts but nothing changed; What do you recommend, thanks in advance
MS 500i chain running at idle with new clutch
- Thread starter Lemuel
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GeneralKayoss
ArboristSite Operative
This may be a dumb question, but have you tried to adjust the idler screw?
The stihl ms 500i has injection and therefore does not have a carburettor, unfortunately it does not even have adjustment screws
possible that its got an air leak, and idle is rising? I know it should compensate but it can't tune out a leak
Is it idling higher than normal? Could there be an air leak? Can you stop the sprocket manually? Is the bearing spinning freely? Is the pump worm spinning freely on the crank at idle? Is it reassembled correctly? Will it idle with the chain brake on?
Derrick Sawyer
ArboristSite Guru
Agree If u have tach check idle rpm, does it change when u turn saw on either side?
GeneralKayoss
ArboristSite Operative
Ahhh, I don't have any of these new fuel injected saws lol
How does the bearing in there look, I had washed my 500I and the bearing rusted and caused it to do what you describe . Look at it clean and inspect it.
That's why I love a fully adjustable carburetor I can fix myself.
Looks like RedtTacky!
How long was it idling high before you swapped out the clutch? My 500I, when still new, few tanks through it ran what I'd describe as a high idle whereas the chain continued to run with no throttle pressure. If it were carbed, I would have been reaching for a screwdriver. I didn't know what to do, still in warranty, called the selling dealer and got the "never heard of that before" attitude. So back to the wood pile, cautiously continued cutting, and it settled down. Aside from it being a bit hard to start still, it's been a good saw.
If I had to do it over again, I probably would have bought a carbed saw, maybe a 462? Still might, but with zero "local" support, it's a crap shoot. Same, sadly no dealer support for Husky's also.
If I had to do it over again, I probably would have bought a carbed saw, maybe a 462? Still might, but with zero "local" support, it's a crap shoot. Same, sadly no dealer support for Husky's also.
