Michael E
ArboristSite Member
No. He is saying, when you use an impact, do not use a piston stop. Just leave the spark plug in the cylinder and use the compression of the engine as a "soft" piston stop.Are you saying remove the spark plug before using the impact?
The clutch side is reverse thread, the flywheel side is not.
If you want to use a piston stop and a wrench (for tightening), don't buy a metal piston stop, because it puts too much load on a a tiny area of the piston and can damage it. Use a plastic piston stop (Stihl has them for very few bucks) or a short piece of electrical (power) cord. Or just feed some rope into the cylinder. Just make sure that the ports are closed or you will cut the rope and make a mess.
Whatever you do, don't put a screwdriver through the exhaust port as a piston stop. I should not even have to say this, but I own two older saws where somebody did that. It ruins the piston and the cylinder.
Yes, a socket works to pop the seal in. Make sure to note the position of the old seal: Not all seals are flush or pressed all the way in.