So I have a blackbird 1100. I have a rattle when I rev the motor.
Now I removed the oil pan and checked out the lower half of the engine.
So there is a chain that runs off he back of the clutch basket down to the oil pump.
This is only the oil pump drive chain.

Well this chain has about a 1 inch of slack back and forth.
Both sprockets are in good shape. And I don't know if the chain is just stretched but is there a adjustment to fix this. I wouldn't want this to ruin the motor. So please has anyone had this issue.

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