STIHL The Official Stihl Chainsaws Thread

[Maintenance Chief]

Howdy Studs,

Here's my slight issue:
I just picked up a nice 034 that runs strong yet I've got a couple things that need addressing.
1. Every time I tighten the chain by the tensioner screw---when I fire it up---the chain goes loose again. I can't keep it tight!
2. also, ze chain keeps spinning when I take the chain brake off(maybe sprocket)?

Easy fix?

Thanks

Reg

Sounds like one of the clutch spings might be wore out or broke and the clutch bearing smoked.