HELP! John Deere Hydro 185 lawn mower wont start.

If you have gas and spark but no fire there is only one thing left... compression. It may be time to check your valve adjustment. The FC540 Kaw is an overhead valve engine and the rockers are adjustable.

I rebuilt mine this winter. The exhaust side has an automatic compression release so the crank has to be in the exact right position when adjusting the exhaust side or you will get it all messed up.


Chuck