Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [cb750]

7 questions
8
votes
2 answers

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 the bike cranks, but won't start up. I've worked…
John smith
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4
votes
2 answers

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 one but no locksmith around here can do anything…
MillerMedia
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3
votes
2 answers

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 solved some of my problems but now that the bike is…
MillerMedia
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3
votes
2 answers

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 time and found that the plug seemed to be stripped…
MillerMedia
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2
votes
0 answers

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.
George Fernhout
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1
vote
0 answers

Rear wheel won’t do a full rotation before locking

I have 1979 cb750k. This is a project and I haven’t started it yet. I picked it up rolled it around a bit then went to wash it. After washing it the rear wheel has become locked at a certain point and will only roll one rotation and lock. (Can then…
Garrett Charles
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1
vote
1 answer

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 on 3 has gas on sparkplug. Not sooty or…
Donald R.
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