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Old 11-17-2012, 06:50 AM   #49065
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Joined: Jul 2007
Location: San Francisco,Ca.
Oddometer: 12,916
Originally Posted by flatfender View Post
Hey Steve thanks for your help. Good question.. could it be possible I put this together backwards? When I took the cover off I found the cam sprocket could be moved back and forth like when the tensioner is locked in the retracted position during the assembly process. The tensioner arm was pushing on the chain guide but it had no real pressure, When I rotated the cam sprocket clockwise to tighten the chain on the tensioner side this pushed the tensioner out of the way.

Then I loosened the allen bolt and it snapped back with the correct spring pressure. Now the chain is tight and the cam sprocket cannot be rotated. I put a screwdriver on it to force the tensioner in the retracted position and it moved back a quarter inch but has good pressure on the chain guide. Should I not be able to move it back any?

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Your going to have to remove the tensioner and shaft and test the one way clutch. Hold the shaft (by the flat at the end of the shaft) with a pair of vise grips and see if you can get the clutch to skip when pushing backwards on it. Perhaps there are wear or flat spots on the shaft that are allowing this to happen. You do know that if the chain tension is not controlled that the chain can jump some teeth and even allow the valves to hit the piston. You don't want this to happen do ya??
Steve in SF

58 R26
79 R100s
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87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project
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