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Discussion Starter #1
Has anyone ever had a 500 engine lock up? It will turn over fine with the spark plug out. With the plug in, the starter won't turn it over and the recoil is really hard to pull. Compression release is Ok, battery fully charged, cam is good. Any ideas?
 

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Still sounds like the compression release or cam problem. Or maybe timing is off?
 

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You need to replace the compression release. Small spring on it has to be placed correctly, its in the service manual. Have to get it just right or motor will do just what u say it doing.
 
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