Hello everyone. I'm rebuilding an F1 and would like to replace the cushion rubbers inside the primary drive sprocket. After dismantling the assembly to find the originals completely broken up, I find they're not the same size or shape as the Kseries (they look like tiny versions of the rear wheel cush rubbers). I did order some for the Kseries expecting them to be the same, but they aren't. Does anyone know where I can source these parts (they're not listed in the Honda parts lists)? Has anyone had experience of this? Thankyou.
Primary Drive Sprocket F1
- Thread starter mortyboy
- Start date
madmtnmotors
CB750 Addict
I believe all the 69' thru 78' CB750K and F series primary cush rubbers are the same.
>Where did you order them from?
>You say the originals were "completely broken up" so what did you have left to compare the new ones to?
>Can you post some pictures?
>Where did you order them from?
>You say the originals were "completely broken up" so what did you have left to compare the new ones to?
>Can you post some pictures?
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Seems the parts were wrong after all. I got them from a supplier in Germany CB-Four.De, (advertised as fitting the CB750) and have asked for a refund. Waiting to see if they can supply the correct type. See pics of original (what's left of them) against 'new parts'.
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madmtnmotors
CB750 Addict
Yep, the SOHC CB750 (69-78) should be round. The later DOHC CB750 could very well be different size and shape.