SOHC.co.uk Forums > CB500/550

Kick start and clutch operation

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Bryanj:
In the pic it looks like the bearing behind the primary gear is not fully in, is it and the retaining  plate tight?

CB-500:
I know what you mean about the photo

Have double checked - The bearing is fully in and retaining plate is tight against the crankcase

Oddjob:
Just to satisfy my curiosity can you count the number of teeth on both the primary drive sprocket and the back of the clutch, just to check they are compatible. The 500 and the 550 both use different number of teeth and I'm wondering if there is a mix and match going on.

McCabe-Thiele (Ted):
That sounds a promising idea from Ken.

CB-500:

--- Quote from: Oddjob on July 18, 2023, 02:47:37 PM ---Just to satisfy my curiosity can you count the number of teeth on both the primary drive sprocket and the back of the clutch, just to check they are compatible. The 500 and the 550 both use different number of teeth and I'm wondering if there is a mix and match going on.

--- End quote ---

I’ll try and count the number of teeth laters

The kick start worked before the engine was stripped so obviously something has gone a miss somewhere - But struggling to work out what

With the outer clutch housing fitted on the main shaft as per the previous photo - The transmission can be discounted as the outer clutch housing freely spins on the shaft (the inner clutch hub fits onto the main shaft splines to turn the transmission) - So trying to turn the outer clutch housing should just spin the primary gear drive and crank

This operation works when turning the crank and results in the outer clutch housing spinning anti-clockwise - but I can’t turn just the clutch housing the same direction (anticlockwise) to turn the primary gear and crank

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