kohler 17 h.p pro

[dwint]

I bought a used craftman with a kohler pro hydraulic valves.its turning over really hard when I start it and was hoping the valves could be adjusted but I took the valve cover off and theres no adjustment.when I turned the motor over by hand there is no gap in the valves at all.can someone tell me whats going on.i have a new battery and briggs if this happens you adjust the valves.is my starter shot

 

[mechanic mark]

post model number from under seat as well as all numbers from engine data plate.

 

[dwint]

this is on the engine 3khxs.49026b

 

[reynoldston]

It could have carbon build up on the heads and pistons.

 

[dwint]

that would give it too much compretion correct?

 

[mechanic mark]

http://www.kohlerengines.com/onlinecatalog/pdf/24_690_07_EN.pdf see page 19, engine starts hard. Let us know what you find, start with easiest & move on to more difficult, thanks.