I'm having problems with my deere starting have replaced batteries starter and other electrical you have to turn flywheel to a certain spot before it will try to turn over it has a 15 hp kohler engine I think it might be something to do with compression release help please

Your vavles simply need adjusted.

im haveing problems with my deere starting have replaced batteries starter and other electrical you have to turn flywheel to a certain spot before it will try to turn over it has a 15 hp kohler engine i think it might be something to do with compression release help please
I've had valves checked was told they were OK

Was the engine ran to operating temp. usually about five minutes. Before they checked the valves, or did they just check with the engine cold?