Gearbox gear installation
I have a 1971 Bonneville T120R with a 4-speed transmission. I took off the inner gearbox cover to replace the leaf spring. A gear on the bottom shaft (layshaft?) closest to the inner gearbox cover came off. It has 30 teeth so I'm guessing it's the Layshaft Low Gear. It has a flat side with the opposite side being indented or dug out I will say. One questison is which side faces the middle of the bike? Hope this makes sense. The other question is regarding indexing. Will I have a problem with this if I have not moved anything inside of the gearbox?