oldguy

TLrider, I pulled the left cover off so I could see what's going on in there. Once I could see the chain it was easy to adjust it correctly. I pushed on the slack side of the chain and turned the adjustment screw back in until I got a little movement on the chain. I had it way too tight. The screw ended up very close to where it's been for the last 30 years. I guess I haven't run it enough to wear it out. Thanks for all the help. I found a repair manual CD on Ebay. It will be interesting to look at it even if I don't do anything major to the bike. Take care. Oldguy

TLrider, Thanks a lot for the info. I'll take a look at it tomorrow. I'll probably pull the cover off just to see what's going on in there. I tried turning the screw out quite a ways with the engine stopped and didn't feel any resistance. Hope I didn't damage anything. Possibly the chain is just very loose. I don't know if there is a spring that tensions the chain, or the screw pulls directly on the tensioner. Thanks again.

Hello, I have a 1973 TL125 and would like to adjust the cam chain tension. I wonder if some person experienced with this could give me a quick lesson. I've looked all over the internet, but I can only find information about later years. Mine has a screw with a screwdriver slot, with a locknut on it. Thanks for any information. I bought it used in 1975 and have never done much to it except routine lubrication etc. It's been totally dependable. I used it for a trail bike for several years, but now I just use it for getting around my property mostly. I just put a new seat on it. The old one was about gone. I don't plan on doing much to it, so I don't really need a shop manual. I think I should probably adjust or replace the cam chain though. I don't want it to get too loose and cause damage. This is my first post here, I hope it works properly.