Stihl HS 86 R

[colwoodlandcare]

Was cutting brambles on friday when the blades stopped moving but it would still rev, shock it and they moved again then stopped.

Ive taken the bottom cover to the gearbox off and the 1st little cog isn't going round. Any ideas what the part inside could be broken? Is it a timely thing to do?

[s.varty]

i think the little cog is the drive cog,if im right it could be expensive

[GardenKit]

The little gear is on the end of the clutch drum shaft.

They can suffer from bearing failure causing seizure, or the clutch shoes can seize closed.

Or the clutch brake could have applied.

You will have to seperate the engine from the gearbox to investigate the clutch.

[Acg128]

Mine is doing the same.. Hope it's not too expensive to fix in the new year!

[colwoodlandcare]

Hmm i do hope its not an expensive thing, the little cog still turns but hand just nothing when you touch the throttle. do hope its something simple.

[GardenKit]

Sounds like the clutch shoes have stuck on their pivot bolts an are not flying out with centrifugal force.

 

Its a simple matter to split the engine from the gearbox to investigate.