Join Date: Feb 2013
Location: New York
Thanked 1,231 Times in 1,137 Posts
I think that motor does have a compression release, but I've never had one with compression that low honestly. I'm a bit confused about your valve clearance because the LEV120 engines that I'm familiar with are a side valve design, if I'm not mistaken, and so you would check the clearance between the valve stems and the lifters by removing the stamped steel plate on the side, not by pulling the head. The other issue is that, assuming the crankshaft is not bent, the plastic teeth on the camshaft could very well be damaged, or the compression release could be broken, causing it to be unable to fully disengage. The camshaft in these motors is a cast piece with a plastic ring of teeth molded onto the part that engages the crankshaft, and I've seen them get partially sheared or damaged from a shock to the blade.