My 04 , 660 Grizzly has been having a harder time turning over the engine at start up. Bought a new battery, etc and finally narrowed it down to the exhaust valves being out of adjustment and not allowing the decompression pin to function. I’ve been fiddling with the exhaust valves and now have it turning over very easily at cold start up.
BUT – here is where I am confused : sources vary on what the exhaust valve clearance should be, but regardless – if the decompression pin is extended ( slightly opening the exhaust valves ) until the engine reaches several hundred RPM – that means there would be NO clearance until the pin retracts – correct ? If this is the case, not sure how to adjust exhaust valves …… what am I missing ?
Thanks, JB