DEEENO26 Posted July 8, 2020 I have a 05 CRF450X and recently had to replace the cam chain tensioner. My question is does the cam chain stretch like a drive chain and need to be replaced? I have had this bike since I bought it new and after switching to a manual tensioner I noticed that the new tensioner is screwed way in . Does this mean I the chain has stretched too much ? Anyone run into this ? Share this post Link to post Share on other sites
Jim Dettman Posted July 8, 2020 49 minutes ago, DEEENO26 said: I have a 05 CRF450X and recently had to replace the cam chain tensioner. My question is does the cam chain stretch like a drive chain and need to be replaced? I have had this bike since I bought it new and after switching to a manual tensioner I noticed that the new tensioner is screwed way in . Does this mean I the chain has stretched too much ? Anyone run into this ? Absolutely yes, and yes, I would change out the cam chain. Most will replace the cam chain every time they do a piston and ring change. 2 Share this post Link to post Share on other sites
matthew c davis Posted July 8, 2020 yeah change out that cam chain like now..i had one skip a tooth and piston touched valve, had to walk out...you will see how stretched out the old one is compared to the new one you will put in.....I kept that old cam chain on the wall of my garage to always remember that ordeal 2 Share this post Link to post Share on other sites
smustang Posted July 8, 2020 When you do replace it make sure you don't let the chain hang down!!!! It can and will get jammed in the case, and break a part of the case if it slips down .... Just FYI 2 Share this post Link to post Share on other sites
DEEENO26 Posted July 10, 2020 Ok , so another question. Can you change the cam chain without removing the head ? Share this post Link to post Share on other sites
Jim Dettman Posted July 10, 2020 Yes. But you'll need to pull off the left side cover. Jim. 1 Share this post Link to post Share on other sites
DEEENO26 Posted July 10, 2020 2 hours ago, Jim Dettman said: Yes. But you'll need to pull off the left side cover. Jim. Thanks that's what I thought I believe after I pull the fly wheel I can replace it Share this post Link to post Share on other sites
Jim Dettman Posted July 10, 2020 yes, you'll need to pull the flywheel. Jim. 1 Share this post Link to post Share on other sites
Dixon Cider Posted July 10, 2020 I would recommend a flywheel pulling tool. There is an oil passage at the end of the crank that you don't want to damage. 2 Share this post Link to post Share on other sites
DEEENO26 Posted July 10, 2020 23 minutes ago, Dixon Cider said: I would recommend a flywheel pulling tool. There is an oil passage at the end of the crank that you don't want to damage. yes thanks I ordered the tusk one for that, Share this post Link to post Share on other sites
