CM400-C Timing Adjust (sputters at 4k)

Honda CM 400 discussion forum:


CM400-C Timing Adjust (sputters at 4k)

CM400-C Timing Adjust (sputters at 4k) 
Rob G said 2007-11-23 16:44 
 
I have a CM400-C that I´m having trouble with, at first i thought this problem was the carb. maybe a flat spot or something but I bought a CB450 carb which was in better condition and still does the same thing.

If i had to guess I´d say its timing...right?
I just have no idea how to do it...

I´ve worked on alot of 2-stroke and 4-stroke mopeds but none w/ a CDI...so i´m completely lost, haha.


I did a compression test on it and everything looked fine.

-rob G 
 
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