8433jeff
Aftermarket connoisseur
Others know more than me but I got some small husky ones and got them to work real well. All the ones on one of our saws were shot.
+1 on that. I've used them and used the Stihl ones found on 011's, I made a stud for to fit that on my 4000. Because I had several left over from the 011 projects, and you still can find these NOS, thats why. Dolmar also has one that might work, they use them on the 6400-7900 frame, I believe.