1981 Honda CB750 new battery not charging, motorbikes does while riding, starts the next day.

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1981 Honda CB750 new battery not charging, motorbikes does while riding, starts the next day.

Pcontrer714
I can bump start after 15 min cool down, then the bike will run, lights start to dim, motor spudders and dies? Bad coils?
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Re: 1981 Honda CB750 new battery not charging, motorbikes does while riding, starts the next day.

TOOLS1
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That is exactly what happens when the battery runs down. You must have 13.4 volts with the engine running at 3k rpm. If you download the factory service manual from the manuals link for your bike, it will give you detailed instructions on how to test the charging system. Most of the time it is a bad rotor.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: 1981 Honda CB750 new battery not charging, motorbikes does while riding, starts the next day.

Pcontrer714
Thank you sir, I was pricing coils already. Rotor and stater are the same?
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Re: 1981 Honda CB750 new battery not charging, motorbikes does while riding, starts the next day.

TOOLS1
Administrator
No, two different parts on that bike.
https://www.partzilla.com/catalog/honda/motorcycle/1981/cb750k-a-750-four-k/alternator
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)