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So I got the parts (p&c) to rebuild my MS290 sitting in pieces. Anything else I might as well replace while I'm at it? As well, once I pull the parts from the washer, what if anything should I use as an assembly lube?
Use 2 cycle oil on the piston, pin bearing, big end rod bearing & mains. Make sure there are no air leaks or you will be replacing the P&C again, Randy
+1 on the 2 cycle oil as assembly lube. If it's a slow process re-building it (more than a day or two), I'll fog it with Deep Creep (Seafoam in a spray can) and tug it a few times to distribute. Warning: the saw will smoke like hell for a few seconds when you start it up the 1st time.
Ideally you would pressure & vaccum test the saw. Next best is to wiggle carb. boots, check clamps & carb bolts etc. A leak will lean out the mixture cause more heat & less lubrication to the piston, Randy
Crank seals, fuel line and filter, carb rebuild kit. Check out :http://www.arboristsite.com/
lot's of chainsaw rebuilding info. How to pressure/vacuum test. Also how to recondition a cylinder with muratic acid.
You definitely don't want to have a vacuum leak, you will likely seize your saw.