Chainsaw Repair

Owner picked up the saw today. Gave me a a 6'er for tip. 

Also I took some pics of it comparing side to side and top to top with my 475.  Same way I did the 445 440 372 pics.

That 475 looks a little bit fatter.

Quote from: 3000 FPS on October 19, 2016, 06:44:38 pm

That 475 looks a little bit fatter.

Yep and is.

Have pics of the 445 440 372 together too.

pics below

I have seen wear on the seal area of the crank like that before.  Have been able to work around it by seating the seal a bit deeper (check to see that there's room for the seal lip first).

Husky flywheels (at least on 100/200 series, 285/1100/2100/298/2101) always seem to be a **** to remove.  I always have to use a puller on them.  Most others (except old large frame Macs) seem to be more cooperative.  May have something to do with the tapers they use.  Just a SWAG...

So far I have always used OEM seals and o-rings on these.  I usually replace the little oil pump discharge x-ring as already mentioned.  When that leaks, oil dribbles out from under the pump rather than going where it is supposed to.

I set seal deeper and all good.  Between the marks on crankcase area and the crank wear seal area. Seems I got by both.

What is this x-ring? Is it the small o-ring where it goes into the bar oil tank?

That's how I feel about my 266XP and 272XP (and I'm sure I'll feel the same way about my 268XP after I rebuild it).

The 1/2"-ish diameter rubber bit that goes into the oil tank is the flange end of the pickup tube.  You can pull it out of the hole in the tank when the pump is removed.

The tiny 1/4"-ish diameter square-ish section rubber ring on the little roll pin sticking out of the backside of the oil pump body is the X-ring.  It has an X cross section (basically a square cross section with a shallow groove around the OD and another within the ID).  It seals the pump discharge port against a hole in the case that feeds a passage that leads to the bar oil feed slot in the bar mount pad.  Damn thing costs $3-$4 or so, but is important to replace if old and gummy.