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For those of you who have been following me, I know, it's the world's longest engine rebuild :)

I'm at the point where I put in the chains and guides. I noticed the little spacers are loose on the exhaust side.

I made a video:

They are also a little loose on the intake side but not like that. The sprockets seem to be on correctly (I didn't remove them).

Is that normal? Can't remember, disassembly was a while ago. Thanks!
 

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normal.
its used to make a slower and smoother contact between chain and gear to improve durability.
centrifugal force will push the sprocket so they get in contact with the chain before it touches the gear.
 
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