Questions tagged [cb750]

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750 will not idle or run without choke fully on

1977 Honda 750 will only run with choke fully on, it will only idle at 3000rpm, idle setting does nothing. Carbs are clean and rebuilt. It will rev up but appears to be burning quite lean.
1
vote
1answer
1k views

Motorcycle, cylinder 3, not firing

Motorcycle - 1981 honda cb750c dohc 4 carbs keihin. Cylinder 3 is not firing, motorcycle starts up fine with 1,2 and 4 firing. Just cleaned carbs by hand, did not use ultrasonic cleaner. Spark plug ...
8
votes
2answers
2k views

Motorcycle's electrical system and starter work after sitting for years, but engine won't run

I have an 1981 Honda CB750 bike that's been sitting in a garage in Arizona for 5 years. So far I've changed the battery and found all electrical components to be working. The engine isn't seized and ...
2
votes
2answers
2k views

Engine Does Not Run with Choke off (Honda CB750)

I have a 1972 Honda CB750 that I have been working on and have a question about running the engine with the choke off. I originally posted this question (1972 Honda CB750 Motorcycle Choke) and it ...
4
votes
2answers
260 views

Replacement/Copy of 70s Honda Key

I bought a 1972 Honda CB750 and the key that came with it is a weird little key. I'm guessing this is the way they were made back then. I would really like to get a copy of the key so I have more than ...
3
votes
2answers
1k views

Stripped Threads on inside of Oil Drain (Motorcycle; '72 Honda CB750)

I recently bought a '72 Honda CB750. There is a small oil leak (just a consistent but seldom drip) from the oil drain plug underneath the bike. The other day I went to change the oil for the first ...