Stihl Kombi 94R trimmer shaft pulls out when changing attachments...


LawnSite Bronze Member
Kitchener, ON
Hi folks, I have a Stihl 94r combi engine that is just out of warranty (of course). When I pull an attachment off the last few times the engine shaft comes with it. I am able to get it seated back into the unit and it runs again without a problem - until I change attachments. It looks to have a small plastic washer half an inch thick on the end that pops out and it looks warped/melted. I didn't pull the shaft out all the way so as not to dislodge any components further rendering the unit non operational.

So, if anyone has replaced the shaft, or a component on it so it no longer comes out with the attachment and knows a fix, it would be appreciated! I attached a photo of the shaft showing the plastic piece (clump). Thanks!



LawnSite Silver Member
Long Island
You need the plastic retention bushing that goes in the end of the shaft. It should only be a couple of bucks at your dealer. It's supposed to be greasy, so it doesn't melt like that.