Right Side Case by David P. Matthews
To remove the RH case cover (to access the cam, gearbox, etc) without disturbing the primary side; remove shift quadrant pin by
1) Removing split cotter
2) Threading one of the 2BA screws from outer cover front into the pin with needlenose pliers.
3) coaxing pin from bore with pliers (this may require a few taps with a wrench or similar tool. This allows you to remove the cover leaving the transmission intact (the quadrant stays trapped between the shift forks and the detent spring.)
Reassembly can be a little tricky, trying to line the cover up with the shafts and the quadrant, but it is a lot easier and quicker than tearing the primary down, especially at the track with the bike laying on its side to hold the oil inside. You can align the split pin holes by twisting the 2BA screw while probing through the hole the the case with a small pick or nail. Over the decade I've been racing my B-50
I've done it dozens of times.
Also, if you want a reversed shift pattern, the quadrant can be installed with the "T" DOWN instead of UP.
This is helpful if you have rear-sets and have turned the shift lever backwards.
David P. Matthews
When fitting the outer cover, oil the buch and seal, and as the top of the seal crosses the cotter pin ease it carefully over the step with a small screwdriver.
Fit the cotter pin with the threads pointing forwards. When removing it, hold down the kickstart down so that the pin is vertical. This saves your hammer from distroying your outer cover.
© Rickard Nebrér