Motorcycle Repair/Fuel lines

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Question
I have a 1977 Honda 750 which has two lines ,one is larger than the other.I know the larger one goes to the fuel thank but I don't know where the smaller one goes.can you please help   Thanks Don

Answer
Don, you didn't mention if you had a CB750K or CB750F or CB750A.......  Are you talking about the two lines from the carburetors? There are also crankcase vent hoses, crankcase drain hoses, carburetor vent lines and oil tank lines running through these bikes.

Go to www.cmsnl.com and select HONDA, then the model, then year application. There are online microfiche illustrations that show most of the fuel and/or vacuum/vent lines.

The smaller hose from the carburetors is an air vent tube and doesn't connect to anything on the 1977 models, as I recall.

Bill Silver

Motorcycle Repair

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Bill Silver

Expertise

Need help with vintage Hondas from the 1960s? I am an expert with 250-305cc bikes in particular and most all of the other pre-91 models, in general. I do NOT claim to have a great deal of experience on Gold Wings, Cruisers, ATC/ATVs and dirt bikes.

Experience

I have owned/ridden/maintained Honda motorcycles for 35 years. I have written five books on Honda repairs and collecting. I was a service manager for two Honda shops back in the 1980s.

Organizations
VJMC (Vintage Japanese Motorcycle Club) of North America

Publications
VJMC newsletter, as editor for two years and as contributing editor currently.

Education/Credentials
3 years auto shop in high school, teacher's aide in Automotive Technology in Jr. College, Diesel mechanic course in college, self-taught mechanic and automotive writer.

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