The Dredded Downshift Issue...

[StuDew]

Help! My 2004 Bonny has started to get tricky on downshifts from 4th gear, oddly never from 5th to 4th. The basic symptom is initially no gear on depression of the lever. This can be overcome by re-engaging the clutch, adding a "blip" of throttle then trying again. I fear something is heading south with a total failure imminent. I did drop the bike on its left side a couple of months ago breaking the gear lever foot pin. Replaced the whole lever but did not immediately notice this problem. Having said that I did not use the bike much, just pottering about in city traffic. The downshift gremlin only became apparent on the open road in the past week.

I have read about similar issues with T120s of much newer vintage. The Youtube videos point to the gearchange shaft assembly getting worn. However the design of the pivot plate does not correspond to the part for my gearbox.

Does anyone have any suggestions?

 

[Rolandrat]

Bent shaft I’d guess

 

[StuDew]

Bent shaft I’d guess

I'm coming to the same conclusion. Too much of a coincidence following a hard drop. Thanks.

 

[StuDew]

Bent shaft I’d guess

Finally got around to replacing the selector shaft which, as suspected, was slightly bent. Delighted to report that I can now downshift without problems. Thanks for the advice.

 

[Rolandrat]

Finally got around to replacing the selector shaft which, as suspected, was slightly bent. Delighted to report that I can now downshift without problems. Thanks for the advice.

Well done. Glad it was a simple fix and you are back on the road.

 

[sikatri]

How visible was the bend?

 

[goody]

Be interesting to see a photo of the bent shaft.