4th speed countershaft gear and crankshaft bearing fitting
 

Hello to all, perhaps this was commented in other topic, if it was and know where it is please send me the link!
My yamaha XT600Z 1vj (2ty beacause it was assembled in Brasil), has for the countershaft 4th wheel (21th), the part number 55u-17241-00. I can´t find it anywhere. What I can find to buy also here in Argentina is the gear 3aj-17241-00 that has also 21 th and looks the same....do you know if it has any diference ?
regarding the Cranck shaft, I saw some fretting in the right bearing. Shaft is -0.01-0.02 milimeters under nominal bearing inner diameter is this ok?
Thanks in advance for your comments!!
Regards

this forum has hardly any traffic nowadays, the old guard that would tear into engines and knew part numbers by heart, no longer active.


Try asking in the UK Tenere forum, a bit more hard core than here.


That said, after looking at pics of both gears, I personally cant see a difference either.


As for the crank, well, fretting is not ideal, depending on how bad it is, it will affect the fit. problem is that i dont think the workshop manual has a wear limit number for the shaft diameter.... have you downloaded the maanual and checked there? if not, do it and also post a picture of shaft



check also the teeth in all the rest your gears, especially 5th, yamaha XTs are known for lunching them... good luck finding replacement if they go bad...