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Well... after struggling with this problem for long enough, I disassembled the saw, and thoroughly cleaned everything. The cylinder and piston had more oil on them than I would have expected, but everything was otherwise very clean. I also took the opportunity to install a decompression valve...

Yeah, I've tried pulling with the switch off. I've also pulled the flywheel, just to have a look behind it. Everything seems fine.

Yes, but ONLY with the plug out.

Yes

Just tried it, but still no help. I still can't get past one power stroke before it stops short. Damndest thing I've ever seen!

Yeah, the engine turns over nicely when the plug is removed. This is a saw that I've used for years, without a problem. This issue just popped up out of the blue!

I'm still working on this one. I removed the muffler so I could get a good look in the cylinder. The piston seems to move freely and everything looks good. When the plug is pulled, the machine turns over freely. As soon as the plug is replaced, I can barely pull it past one compression stroke...

I'm a buyer if this saw is still available. Thanks.

I've got a number of Dolmar saws. I like them, probably because I'm so familiar with them. I've got a strange problem with my PS-9000. I went to start it a couple of weeks ago, after putting it up last Fall, and now, suddenly, the starter pulls VERY hard. It's a big saw and has always taken a...