My Cub Cadet w/ Kohler Courage 20 HP (2014) engine has problems starting. It cranks (cold) until it hits the first compression stroke and then stalls. The starter will not crank it past the compression stroke. Eventually by backing the crank off from the compression stroke and keep trying it may start. Once warmed up it starts OK. I have jumped it from my truck and even replaced the battery but still have the problem.
#2
ILENGINE
I would start with checking and adjusting the valve clearances. also please provide us with the model and spec number from the engine so we have more of a reference of what engine you have.
If the starter is original i would try replacing it. the new kohler original will look different. The drive will lookmore like a briggs starter. I change a ton of those.
Thanks for the suggestions. I will check them out. Everything on the engine is original.
#8
catbob2024
I had that issue with my Cub Cadet, 2006 model. I did all of the usual checking of valves, new plugs,etc. and didn't help. I went through all wiring connections and cleaned them, battery terminals, grounds, starter connections, everything I could think that could effect the starting. I did buy a new battery with the highest CCA. It's been 3 years since and I haven't had a problem, just my experience.
Those engines have a compression release on the cam gear. when you adjust the valves turn the engine over by hand and watch the vaves to see if the exhaust valve bumps open just before it hits tdc. If not the compression release is bad,
Those engines have a compression release on the cam gear. when you adjust the valves turn the engine over by hand and watch the vaves to see if the exhaust valve bumps open just before it hits tdc. If not the compression release is bad,
That makes sense. I have been wondering how valve lash could cause the problem. I assume the CRV works by centrifugal force. I have also learned that the exhaust valve guide can extrude outwards causing failure of proper opening. I will pull the valve cover and inspect the valves guides and adjust the valves on Monday or Tuesday. Thanks for the information.
Worked on the engine. The exhaust valve lash was a little loose but the intake was OK. Both valve guides are extruded out. I tried to drive the exhaust guide back in but it would not budge so left both alone. Set the exhaust to 7 mil. Wanted to set it to 6 mil but did not have a feeler gauge with that size. Installed a new spark plug and reassembled. It still has trouble starting hanging up on the compression stroke. After a few tries I can get it started. So I may need to do this again. But for now, I got the work done I wanted to do last week. Thanks for the input.
