K301 valve adjustment

I have a 12 hp K301 and it needs a valve adjustment I think. It sounds like piston slap but it has a new oversized piston that fits well. Does this have something to do with it.If so what are the adjustments specs and how do you do it? Thanks for the help.
 
Get your own copy of the Kohler Service manual for your engine at the link here.

http://kohlerengines.com/onlinecatalog/pdf/tp_2379.pdf

it may take a while to load, but you can save a copy of it on your computer, or print it, or both. Valve adjustment procedures, specs, everything is in there.
Kohler K301
 
Did you have the crank checked when you put the new piston in? The crank to rod clearance on theses engines are very close.
 
The cam end play needs to be shimmed close to the small end of the range in the manual to avoid the so-called Kohler knock.
 
You can also go to the Gravely tractor club of America site. On the left side look for literature. The is a TON of info in PDF files. The kohler books are there. Jeffcat
 

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