Royal Enfield Bullet gearsghift adjustment. 4-speed

Adjusting the outer gearshift mechanism on my Indian 350 Royal Enfield Bullet with 4-speed gearbox. I've been having trouble getting clean downshifts, it turns out this is because the outer gearshift mechanism backplate had moved slightly.

[@um3079]

Thank you for your great instruction. This solves a lot of gear shifting problems.
One thing I would consider if the lid of the gear box is open is to check and adjust the spring loaded detent plunger (the locked screw on the far right side).
Unscrew the plunger and check the blade for wear and the spring mechanism for it's function. A little grease would be helpful.
If you screw the detent plunger back into the gearbox make sure the blade is oriented horizontal just to fit precisely into the notches of the inner gear selector. To do so put the gear into neutral and screw the plunger all the way in. Now unscrew it about one and an half turn or more till you could shift easily and the gear does not come off. Remember that the blade of the plunger always has to be in a horizontal position.

[@twostroke350]

Yeah, it's a bit that can be unhelpful, expecially if the spring is worn. I've previously re-profiled the notches on the internal gear selector quadrant on this bike (looks like it was done freehand with an angle grinder at the factory) and re-profiled and re-hardened the detent so it latches into the gears a bit more positively.

[@um3079]

@@twostroke350 I see you know this under estimated cause of shifting trouble 😉

[@um3079]

As I got my Bullet in the late seventies from India factory new the detent plunger was screwed in completely and there was no shifting possible. It took me some time and some nerves to find out the cause. So the detent plunger was the very first part (lots of others followed) on which I used a spanner. 😏 Still got her and doing some travel with her.