Chainsaw Repair

I trust Jacob J but have never had any knowledge of it, what say the rest of you? Following is a quote by Jacob J on Sawhawgz.

You don't need the O-ring in there. Husky's engineers later found out that the O-ring hardens with exposure to fuel and heat and becomes useless after a short while. The bushing seals fine to the crank because a film of oil between the two is maintained. You can put the o-ring in there if you want, but it's not going to hurt anything if you don't have it. Just apply a dab of grease to that area of the crank where the bushing rides while you're putting it on.

I would trust JJ as well, but I've never seen an o-ring on the Huskies.....The 044 Stihls had one and later.decided it wasn't needed.

   Chances are there would never be a problem without the o ring, But never trust a little bit of grease to make a seal.       
  Polaris uses a similar setup in the chain case on their snowmobiles, o ring on the shaft.  One day it was leaking on me after a rebuild, I pinched the o ring, and simple gravity let oil leak out, no pressure or vacuum involved here either.
  Even a dried out o ring will still make a seal when wedged in there, it just comes out in pieces like mine did on the 372 that Tim has right now for his tutorial on crank bearing changes.
  Id like the o ring in my bottom end, just tell me what the o ring costs, I don't cut corners on many things!!  The possibility of sucking air into a bottom end doesn't sound like its worth the chance to omit the o ring.

 

Given they are still on the IPL, I will continue to use them! On your saw too alsled!

Given they are still on the IPL, I will continue to use them! On your saw too alsled!

Exactly. There is no service bulletin from "husky's engineers" either. If they found it was no longer needed, then why are they still using them?

Gotta be careful when quoting things like this because as we move down the line we lose tract of who's being quoted. Is the first post quoting husky's engineers or JJ?