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Update. I replaced the timing key. No Luck. I also did a valve job, but I think I did a bad job with the clearance. The exhaust is like 11 thou and the intake is about 14 now. Whoops. Compression is up to 75PSI, but it coughs through the intake instead of starting. Might try to chase my screw up...

Makes sense. I’m sold. Waiting on a set of woodruff keys now. Been waiting on an excuse to pic one up. I’ll let you know if replacing it works.

Just checked and t Dang. I really thought this could be it. No luck though. The key was bent by about .25 mm, but I don’t think that would translate enough to cause an issue. Do you? Any other ideas?

Just checked and t Dang. I really thought this could be it. No luck though. The key was bent by about .25 mm, but I don’t think that would translate enough to cause an issue. Do you? Any other ideas?

Hi guys, so I’m in a pickle with this mower and I’ve hit the top end of my expertise. Hoping you can shed some light. I got an old buntin 36 walk behind for my very steep hilly property and it’s been running fine all summer. Usually starts second pull. During a recent mow it conked out on me. I...