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Shifting Problems

Clutch, Transmission, Drive Chain, Sprockets
Davescycles72
honda305.com Member
Posts: 4
Joined: Wed Jun 07, 2023 7:07 am

Re: Shifting Problems

Post by Davescycles72 » Sun Jul 23, 2023 7:15 pm

It appears we have the exact same year with exact problem did you ever get anywhere with not shifting past neutral?

BowlingSS
honda305.com Member
Posts: 24
Joined: Sat Apr 15, 2023 4:03 pm

Re: Shifting Problems

Post by BowlingSS » Mon Jul 24, 2023 7:45 am

I am still working on it. Been out of town.
1965 Honda CB77 Super Hawk

BowlingSS
honda305.com Member
Posts: 24
Joined: Sat Apr 15, 2023 4:03 pm

Re: Shifting Problems

Post by BowlingSS » Wed Aug 16, 2023 10:20 am

Shifting is working great now. Replaced 2nd gear, shifter fork rollers, and cotters.
1965 Honda CB77 Super Hawk

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Tim Allman
honda305.com Member
Posts: 476
Joined: Tue Dec 02, 2014 9:25 am
Location: Guelph, Ontario, Canada

Re: Shifting Problems

Post by Tim Allman » Wed Aug 16, 2023 11:22 am

These bikes have known problems with second gear. When you shift to 2nd the dogs on the side of the 2nd gear on the mainshaft should engage, leaving very little space. However, a bit of wear can leave the transmission prone to jumping out of 2nd. This is fixed by replacing the zero offset gear cotter (90602-250-010) with one with 0.5 mm or 1.0 mm offset. These may still be available.

So if you can see the 2nd gear slide on the shaft as you rotate the shifter drum but without engaging the gear next to it properly this is likely the problem. I'm not sure what else it could be.

It appears the the shifter forks are in good condition.

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