Chainsaw Repair

The best way to slot the holes is to use a 440 gasket to mark the base of the 460 cylinder.

A little grinding will likely be needed to clear the flywheel.  It'll be obvious and easy to take care of.

Squish should be the same as on a 460 case.  The stroke is the same.  Why use a different piston?

You will need short spacers between the muffler and case.  You can use a few washers or make a couple spacers.

Hope some of that helps.

Got my parts in just need the time to put the bearings in the case and reassemble. How hot and how long should the cases be heated to put the bearings in. Usually use a press to get them in. But it is hard on the case. Want to try a new way. Looked at Killians post on a 371/372 to heat to 200* c for 20 to 30 mins and freeze the bearings for 24 hours. Would think it would apply to stihl saws as well?

+1 on the heat gun

I usually take the rest off and leave it bare

I have a 'garage sale' toaster oven large enough to fit one pair of cases that I use. Husqvarna does not say how long to heat cases only to heat them in an oven to 200°C. The 20-30 minutes that I use is because the toaster oven is not as well insulated as my wife's Viking range which she won't let me use!

When I get a case like a 3120XP which won't fit in the toaster oven, I use a heat gun.

As far as the paint goes, I also remove it. As long as the saw is in service there is little chance of 'white death' inside the cases because they are coated with oil.

When using an over you must remove all rubber/plastic parts from the case and all chainsaw goo to prevent ruining parts or starting a fire.