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Discussion Starter · #1 · (Edited)
I'm checking my old cm400 engine for the first start since a few years.
The engine had some raindamage, piston was stuck etc.

Now it is almost ready to fire up, but i think the chain for the oil pump is a little loose.

I also have a 6 speed block (for parts), and it has the same loose chain.

Is it normal? It isn't adjustable i think....
 

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heres how loose mine is.
LDR said its fine. his word is pretty much better than the fsm
 

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That's normal in the video, I went so far in trying to correct it that I replaced both sprockets and the chain, result was a minimal tightening. IIRC the play changed by @.020"
 

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Whew! this is a load off my mind! Thanks guys. I was in my engine trying to tighten this thing up and could not find a way to adjust it
 
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