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Discussion Starter #1
I have a 1990 with 5,000 miles. Just recently, the bike has been shifting weird. It will down shift just fine but when I up shift it only shifts partly. I'll go from first to second (finding neutral sometimes by accident) and it will engage but I don't hear or feel it and then WHAM it will pop out of second and go into neutral. I took off my right side cover and watched the lever and springs while I shifted it and I could see it not fully engaging. As far as I can tell there are no adjustments on this part. Any thoughts?
 

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I am LOST when it comes to gears and transmissions, but I know that on the TW, chain tension plays a HUGE role in shifting! I can always tell when my chain needs adjustment; shifting will become difficult...lots of neutrals, etc.

A few weeks ago, I noticed that the shifting was getting sloppy, but the chain was within limits...ended up being a worn front sprocket!

When I used a standard chain, I would have to adjust it weekly (I put a LOT of miles on!) or the shifting would suffer! Now that I have an O-ring...shifting is nice...until the sprockets wear!



Hopefully this is where your problem lies...
 

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Discussion Starter #3
I am LOST when it comes to gears and transmissions, but I know that on the TW, chain tension plays a HUGE role in shifting! I can always tell when my chain needs adjustment; shifting will become difficult...lots of neutrals, etc.

A few weeks ago, I noticed that the shifting was getting sloppy, but the chain was within limits...ended up being a worn front sprocket!

When I used a standard chain, I would have to adjust it weekly (I put a LOT of miles on!) or the shifting would suffer! Now that I have an O-ring...shifting is nice...until the sprockets wear!



Hopefully this is where your problem lies...




I am lost on transmissions too. You are absolutely correct on the chain tension, its the first thing I checked.
 

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I took off my right side cover and watched the lever and springs while I shifted it and I could see it not fully engaging. As far as I can tell there are no adjustments on this part. Any thoughts?


Actually, there is a clutch adjustment that can be made inside the right side cover. I only know this because I've got a clutch slippage issue right now and the service manual explains how to make the adjustment.



Can you get your hands on a service manual? I think there is one online somewhere.
 

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I have a 1990 with 5,000 miles. Just recently, the bike has been shifting weird. It will down shift just fine but when I up shift it only shifts partly. I'll go from first to second (finding neutral sometimes by accident) and it will engage but I don't hear or feel it and then WHAM it will pop out of second and go into neutral. I took off my right side cover and watched the lever and springs while I shifted it and I could see it not fully engaging. As far as I can tell there are no adjustments on this part. Any thoughts?


On my KLR when the oil needs changing the shifting starts acting up like that. I haven't had enough experience with the Tdub to know if that's characteristic of it or not. Is it?
 

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Discussion Starter #6
Actually, there is a clutch adjustment that can be made inside the right side cover. I only know this because I've got a clutch slippage issue right now and the service manual explains how to make the adjustment.



Can you get your hands on a service manual? I think there is one online somewhere.




Good idea. I've done that. There is a screw and a locknut that you tighten until the clutch shaft (where the clutch cable attaches to the motor) just moves.
 

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On my KLR when the oil needs changing the shifting starts acting up like that. I haven't had enough experience with the Tdub to know if that's characteristic of it or not. Is it?




You may be right. I wasn't due for an oil change due to mileage, but I was running 20-50 because of the warm summer months. I was riding when it was cooler with the thick oil. I did change over to 10-40 and it seemed to be fine today.
 

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Switching to Mobile Racing 4T synthetic did good things for Tdub's transmission and clutch.
 
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