Murray Roadside Find - M22500

[shurguywutt]

If the flywheel key is damaged wouldn't it be reasonable to suspect there would be some kind of blade damage (hitting an object at high speed to shear the flywheel key)? The blade on this thing looks pretty worn and old but nothing that looks like a high speed impact. I will take a look anyway because the logic behind the timing not being right makes sense.

 

[Oddjob]

I hope you report back after checking the flywheel key. I think that is the most likely culprit. But, if it isn’t, then three thoughts. First, is the kill switch making contact even when the flywheel brake is not on? Second, is the plug you are substituting an exact match for the original? Does the electrode go into the cylinder as deeply as the original? Third, maybe the spark isn’t strong enough. Spark testers don’t measure current.