On every "non-hydraulic" valve train that I am familiar with, the clearance typically decreases with wear, as the valve seats and valves wear over time and use. None the less, I do have NO clearance on the exhaust valve now.
No one has been into this motor, as I bought it new.
If I slide the "decompressor" in the slot to the left, hold it there (because the very weak spring will return it to the right), and turn the motor, the exhaust valve clearance does not change (still holds at zero). So I'm kind of perplexed as to whether or not the decompressor is working properly or not.
Mower won't start. Won't fart or run on carb cleaner. I've cleaned out the carb (it's clean - trust me). I've got fire. I've got no compression, but I'm not surprised since the exhaust valve has no clearance. I have NOT pulled the flywheel to see if the key has sheared.
(scratching my head)
Thoughts?
