Stihl MS361 Oil Pump Housing Mess

[GetDowney]

Replacing clutch and found this mess. Does not appear to be clutch residue, rather, cakes oil sludge. Any ideas how it got this bad? Is this normal after hours of use? What is the best way to clean this mess up.

Also, see worm and spring. The spring was completely loose, not attached to the worm. I assume I just need to replace the worm with a new one?

Any input would be appreciated before I dive into this mess!

Thanks!
Mike


 

[rusticretreater]

That's what collects inside when sawdust meets oil meets clutch heat.  If it doesn't contain metal bits, then you're ok.  The spring doesn't look damaged.

The Stihl parts diagram for this saw show the worm #11(1128 640 7112) and the spring #12(1128 647 2400) as two separate parts.