chainsaw

[jeff stinson]

I have a stihl 028 av woodboss chain saw the chain spins when idling but the sprocket is free when not running any help appreciated

 

[Four Paws]

You need new clutch springs. Or, you need to slow your idle down.

Saw should idle around 2800 rpm +/-. If it is idling properly and the chain is running, you needs new clutch springs.

 

[Gypo Logger]

Could also be clutch drum bearing seized to output shaft, but it's a quick and easy fix with no new parts required.

 

[jeff stinson]

Could also be clutch drum bearing seized to output shaft, but it's a quick and easy fix with no new parts required.

Were is the drum bearing and what is the output shaft

 

[drf255]

Sounds like your idle is too high. If I understand your original question, you can freely move the chain with the saw off but the chain spins at idle?

If you can't reduce the idle to the point where the chain won't spin, you may have an air leak. That would be like having the throttle more open than it is. It will lean out the fuel/air ratio and may damage your saw. I'd check your intake boot first and make sure your carb is on snugly. Then try to lower the idle speed.

 

[shanto52]

Could likewise be grasped drum bearing seized to yield shaft, however, it's a brisk and simple fix with no new parts required.