SOHC.co.uk Forums > CB500/550

Crankcases assembled but can't select gears

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ebmbiker:
These are the limits of movement of the selector drum

ebmbiker:
Second position

McCabe-Thiele (Ted):
Sorry I do not think I can help you as it's outside my limited knowledge.

Only question I would ask is was the gear selector drum/selector forks  in the neutral position when you assembled the gearbox internals ?

ebmbiker:

--- Quote from: McCabe-Thiele (Ted) on May 26, 2022, 01:46:20 PM ---Sorry I do not think I can help you as it's outside my limited knowledge.

Only question I would ask is was the gear selector drum/selector forks  in the neutral position when you assembled the gearbox internals ?

--- End quote ---

I can't be sure if it was in neutral. The shift drum guide screw [the part that screws in from the top of the crankcase] that I have is the later version without the ball and spring. So there's nothing to fit into the detent on the drum.

Sesman:
I’m no expert and the photo is upside down. But that drum appears to be 180deg out of position. In the neutral position the wheel should be nestled in the neutral drum recess. So you might be correct Ted. The gearbox my not have been assembled in the neutral position.

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