Chainsaw Repair

I think that the Club Cadet bars fit small mount Husqvarna saws?  At least the one I bought was.  Not likely to fit on a STIHL.

If you remove the sprocket from an old STIHL bar, you will see that they have a very thin piece of shim stock on either side of it, so even if you drilled a hole, the grease would not get to the bearings.  Bar oil seeps in and lubricates them.  If they are clogged with sawdust, you can still try to clean them with compressed air. 

In a nothing-to-lose situation, you can drive out the rivets and disassemble even a non-replaceable nose sprocket (but do it on a towel - the bearings want to run everywhere!).  Reassemble on a 3x5 card and carefully slide the assembly back into place.  I did this once to remove some string that it ate. I used some hardware store rivets to reinstall - Bailey's sells some OEM ones.

Attached is an old photograph from some type of bar (I forget which brand).  Note that the teeth on the sprocket wear, as well as the bearings.  They are supposed to hold the chain 1/32 or so away from the bar nose rails.

Philbert