18 ohv Intek new head

Michgem63

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I have just replaced the head on my B&S 18 HP ohv Intek. Everything went smooth. Went to start it now the compression is so high the starter will not crank past top dead center. I can turn it past by hand (with lots of force), then try the starter again only to have it stop again. Bought a new 340 amp battery no help. Any ideas??
 

sgkent

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pull the spark plug and see if it is compression that is the issue or mechanical binding
 

Scrubcadet10

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Did you adjust the valve clearance?
 
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