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Discussion Starter #41
OK, in case this still interests you, now the plug has been changed and it seems to try to fire, but then it kicks back.
The flywheel key doesn't look sheared, if there's any other place to look I would appreciate any suggestions.
 

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have you checked to make sure the valve lash is set correctly? i got a lawn mower engine that has a pretty good kick back to it. runs awesome once you get it started but very dangerous kickback. i have wondered if the compression release got messed up on it or something since it ran awesome before i put it on my pressure washer but it was the 2nd engine to do this after being on my pressure washer.
 

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Discussion Starter #43
If the cord puts the piston to TDC, it can get a good pop from firing, but doesn't start. Maybe I'll pull the flywheel and check, reset, or replace the key
If that isn't it maybe the valve lash like you have said. Hopefully not a twisted crank! Thanks will update if there is any.
 

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I just fixed a tractor this summer with a Kohler engine that had spark but wouldn't fire....I checked and double checked the keyway and it was fine...but it was slightly thinner then the keyway...by not even a hair. Replaced it and problem solved.
 

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Discussion Starter #46
The snowblower is going again. Once I got to the key, like in the picture, getting more of it apart was more than I was able to do at that time, so took it to a small engine shop Pat's Rentall), since I'll probably destroy it if I try any further.

Everybody was right! It had a broken (or just damaged) flywheel key, and a sticking intake valve.
Anyway, I learned a lot (particularly that I know what my limits are), thanks everyone.
 
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