I have a Fischer Panda
PMS 4500 FCB generator
with a Farymann
. I had been using the generator
on a daily basis for a year with no issues (original install 2008 now 496 running hours). Then one day the generator took an unusually long 10 second crank to start and the next time I tried to use the generator it would not start at all. I went through the entire fuel
system and it all checked out. I finally checked the valve clearance and found the intake valve had 0.2 mm clearance but the exhaust
valve had zero or negative clearance holding the exhaust
valve slightly open! I adjusted the clearance to 0.2 mm (cold engine) and she started right up! Problem solved!
Fast forward two weeks. I'm again using the generator normally on a daily basis. Then (surprise!) the engine
has an unusual long start. The next time I try to run the generator it didn't start at all. Ah ha! I've seen this trick before so I first check the valve clearance. The engine was still warm from running the night before but both the intake and the exhaust valve had zero clearance. I did not touch the intake valve but adjusted the exhaust valve to 0.1mm clearance and the engine started right up. However, now I have some unburned fuel
in my exhaust and there is a new rattle in the engine.
Question: what is the proper valve clearance and valve adjustment procedure for this engine?
The book I have states states 0.1-0.2mm clearance for a cold engine. I won't have a cold engine until I stop through a marina next week. What could I expect the valve clearance to be on a warm engine?
Any other thoughts, hints or suggestions?