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Old 10-23-2012, 03:07 PM   #25
Peanuts
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Joined: Sep 2009
Location: UK
Oddometer: 1,478
The longer stub on the screw does not control tension on the chain, it controls the parked position of the tensioner.

The tensioner relaxes when the motor is stood or when oil pressure is low. The longer plug means the fully collapsed tensioner does not leave the camchain so slack that it rattles bad and jumps a tooth.

What I cant understand is why the longer plug is 4 x the cost of the shorter one.....
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