shims........what's their life span?

I am on the last hur-rah! I don't want to push it??? new to this 4 stroke world.........not sure why i left my 2 stroke behind...........



I would not continue to shim and run that head. You will cause catastrophic failure if you push it to much

shims last forever...  the valves they are on top of do not.



Compare what shims you have to the specs in the manual, If they arent close to the smallest size allowed you are good to go. 

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