Stihl MS180 clutch question

Arborist Forum

Help Support Arborist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
dieseldave

dieseldave

ArboristSite Operative
Joined
Dec 31, 2008
Messages
111
Location
egg harbor NJ
I have a couple of busted up MS180's, trying to make one runner from the two of them. Trouble is, I need to get the clutches off of both of them, but I don't know how they're held on. Threaded onto the crank? Keyed? How do they come off?
 
Saw Dr.

Saw Dr.

Junk Collector
Joined
Oct 20, 2007
Messages
5,986
Location
Temple, GA
They are threaded. BE VERY CAREFUL!!! There have been several connecting rods bent here using non-factory tools to remove those clutches. I suggest removing the flywheel first, and then using an impact on these with the spark plug in. Good luck. It is LH thread BTW.
 
sefh3

sefh3

Addicted to ArboristSite
Joined
Mar 8, 2007
Messages
7,045
Location
Michigan GO BLUE!!!!!!!!
I have used a plastic piston stop and this has worked for these smaller engines. The rods are known to bend before the clutch comes off. Remove the flywheel first so you don't shear the keyway.
 
Saw Dr.

Saw Dr.

Junk Collector
Joined
Oct 20, 2007
Messages
5,986
Location
Temple, GA
Impact, OUCH!! sometimes its needed. Try, plug out, fill cyclinder with some rope and gently take off first. Should be reverse thread...

This is one of the (many) ways that has been used to effectively bend 180 rods. If you use rope, you need to make sure the piston is very close to halfway up the bore. Too close to TDC or BDC, and the rod will bend like it is aluminum.
 
Saw Dr.

Saw Dr.

Junk Collector
Joined
Oct 20, 2007
Messages
5,986
Location
Temple, GA
maybe a stupid question, but how would you shear the keyway

The impact will turn the crank inside of the flywheel. The key is molded into the flywheel. It will be wiped away by the sharp edge of the crank cutout, even without loosening the flywheel nut. DO NOT ask me how I know this. :msp_ohmy:
 
Top