What sprocket to use on a MS660 for stump work?

[Jimmy in NC]

7 pin. I can show you what happens to 066 clutches with abused 8 pin setups...

 

[Mark71gtx]

Lol, I have already seen it... Two new clutch, drum, worm gear assemblies, bearings, and one oil pump are on the way...

 

[hseII]

I agree with mopar. I would just add go .404 full skip

Stihl makes full skip .404 in

RSLF - square ground
RMF - semi chisel aka "rapid micro" - hard to find.

46 designates .404 so your looking for

46RSLF
46RMF

Or

+

 

[Jimmy in NC]

Lol, I have already seen it... Two new clutch, drum, worm gear assemblies, bearings, and one oil pump are on the way...

Pretty much...thats what happens.