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CB77 starter issue

Charging System, Wiring, Lighting
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Merz64cb77
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Joined: Mon May 08, 2017 7:42 pm
Location: Mississauga, ON CAN

CB77 starter issue

Post by Merz64cb77 » Tue May 15, 2018 3:02 am

I have an intermittent issue with my start button/starter on my cb77. For some reason the button is finding ground when the button is not pressed and the only way to stop the starter from is to disconnect the battery. Taking the key out of position 1 doesn’t stop the starter either. I checked the switch itself, the wire from the switch to the bucket but can’t find the short. Any help would be appreciated.
67' CB77
66’ CB77
65’ bomber
68’ hellcat

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Seadog
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Post by Seadog » Tue May 15, 2018 7:11 am

I would suspect that the starter relay is sticking in the closed position. After you disconnect the battery to stop the starter motor, what happens when you reconnect it?

Merz64cb77
honda305.com Member
Posts: 154
Joined: Mon May 08, 2017 7:42 pm
Location: Mississauga, ON CAN

Starter issue

Post by Merz64cb77 » Tue May 15, 2018 9:22 am

Hi seadog, where is the starter relay located and can I fix it? Funny you should ask about reconnecting the terminal. When I attempt to reconnect the negative terminal I get a strong arc across the terminal with the screw. Needless to say I cannot reconnect. Last time this happened I took the switch off the bike. I atttempted the reconnect just yesterday again. At first it was ok but then the second time I pressed the start button it locked in.
67' CB77
66’ CB77
65’ bomber
68’ hellcat

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Seadog
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Joined: Thu Dec 25, 2014 9:54 am
Location: Cape Cod, MA

Post by Seadog » Tue May 15, 2018 9:37 am

The solenoid is located on the left side, below the bottom of the side cover. You first need to trace the yellow and red wire from the solenoid all the way to the switch to see if there are any shorts.

Here’s some reading for you to do. Copy and paste this into Google.

site:www.honda305.com cb77 starter solenoid

Merz64cb77
honda305.com Member
Posts: 154
Joined: Mon May 08, 2017 7:42 pm
Location: Mississauga, ON CAN

Starter issue

Post by Merz64cb77 » Fri May 18, 2018 7:22 pm

I disconnected the start button from the switch itself and also disconnected the bullet in the headlight bucket for the yellow/red wire to rule out that section of wire. However, when I tried to reconnect the negative lead to the battery terminal, I got a arc and the starter turned on. This is all with the ignition turned off. Any ideas other than the stuck relay?
67' CB77
66’ CB77
65’ bomber
68’ hellcat

User avatar
Seadog
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Posts: 1272
Joined: Thu Dec 25, 2014 9:54 am
Location: Cape Cod, MA

Post by Seadog » Sat May 19, 2018 6:52 am

Time to check the solenoid.

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