Chainsaw Repair

Side note/question:  The 044 uses a spacer that the crank seal lip rides on and clutch assembly is spaced away from crank with.  The fit of the spacer is a loose press fit and I'm wondering if the tension of the clutch pushing the spacer against the crank shoulder is sufficient to seal or should I use a retaining compound on the spacer.
 service bulletin info on this? 

Also, can't see the spacer on any new/old IPLs

the bearings were shielded, not sealed. didn't work to good.
put a little grease between the shaft and bushing.

I little known secret concerning high speed precision bearings.

When they set up same they remove the seals,wash all the original grease out and then pack the bearng with high speed grease .--then believe or not they use compressed air and blow out the excess .Then replace the seals .

It seems to go like this .What ever the small amount the balls can carry,just a slight film ,is all the bearing needs .Any more than that s detrimental .Sounds crazy but that's the way it's done .

Grease as we know it in reality is just oil with a thickening agent .

We had a furnace with a roller conveyor traveling through it. Ran about 1550 F.

Shut it down for PM and greased all the bearings on the roller ends outside the furnace. On start up, the conveyor motor wouldn't pull the conveyor because of all the grease in the bearings. We had to install a bigger driver & servo motor.  After the grease pushed outside the seals, it pulled OK.