2000 WR 400 cam tensioner help
Posted January 14, 2008 - 01:34 PM
P.S. The Yamaha dealers have got me nowhere. All they say is replace the cams, tensioner, chain, and crank. All the stuff they want to sell me look fine. Some how i think they just want my money. LOL
Posted January 14, 2008 - 06:26 PM
Posted January 14, 2008 - 06:30 PM
Posted January 14, 2008 - 06:53 PM
Posted January 15, 2008 - 01:59 AM
The sprockets all look great and only the intake cam is off by 1/4 turn (or so). How much resistance should the tensioner have?
First, have you checked the sprocket behind the stator? When you return it to the correct timing, do you have to adjust both cams or just one? If you think it is the tensioner, wind it up, remove it from the bike, and then release it. Try pushing in on it to see how much resistance it has.
Posted January 15, 2008 - 08:22 PM
Posted January 16, 2008 - 06:45 AM
Only the intake side was off by 1/4 turn or so (Both times). I haven't had a chance to tear it apart again to confirm this. Here in Michigan it's still too cold to play outside. Thank you for the help. I will re-post for all to read when i repair it again. Hopefully these threads help someone else that might have the same issues, as much as it helped me. I love this site.
Checked the spare that I have and I can barely make it budge. I'm going to say really tight. Don't ride it until it's fixed. Your valves will hit the piston if it jumps time too much. So when you set the timing marks through the inspection hole, it's only the one cam that is off?
Posted January 17, 2008 - 06:58 PM