NE0 Posted January 8, 2013 Share Posted January 8, 2013 Last night , for whatever reason my drive chain jumped the rear sprocket cog and came off! No damage! the engine stopped! I came to a stand still pretty quickly..........nobody about!! When I rebuilt the motor last year and had the wheels rebuilt, (foolhardy i know!) but I never replaced the drive chain and sprockets at the time! I just reused the old ones (I know I didn't know its history) Its done now ok?................don't go on! Anyway, back to reality! I know what needs to be done, new kit from Wemoto this weekend! I guess its all down to adjustment, which is where you fellow DTMX guys know a tad more than me! My 400/4 is easy to adjust, you pull the rear wheel back and adjust the chain tension with the bottom part of the chain for the up and down play.....easy.....No automatic chain adjuster! DT....auto chain adjuster!, loads of slack chain! seems its got about 20 links more than it should have!!! ....ok bit of an exaggeration! What's the correct way to adjust the rear chain with these tensioners and are there any nuggets of information and how to do it for the best results! Anyway with such a title i'm hoping you'll read how to do it the easy way from all the Easy Tip posts to follow..........over to you guys! Link to comment Share on other sites More sharing options...
Moderator Airhead Posted January 8, 2013 Moderator Share Posted January 8, 2013 Try this Alan Put the bike in 1st gear and push it backwards to tension the top run of chain, hold the tensioner down off the chain, and adjust for 50mm slack in chain, both wheels on the ground mind. Actually the books says 40-50mm of slack Link to comment Share on other sites More sharing options...
NE0 Posted January 8, 2013 Author Share Posted January 8, 2013 Thanks Paul, Why couldn't the haynes manual have put it in your simplified way? I've just been down the shed and done it ,................. I won't tell you how much it was out by ! But I could have used the slack as a security chain!! I obviously didn't do it right the first time! I've got a feeling I did it with the bike on the pit shop stand..... I'll still go ahead and get the sprocket kit and do it right next time too! at least i can use it for work until the weekend..... Link to comment Share on other sites More sharing options...
Moderator Airhead Posted January 8, 2013 Moderator Share Posted January 8, 2013 if your chain is very slack you run the risk of it touching top of the swingarm when the engine is on the overrun Link to comment Share on other sites More sharing options...
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