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First bike

1727 Views 19 Replies 6 Participants Last post by  jeffkmeyer
I just purchased my very first bike. It is a 1979 CB750F that had an engine rebuild a few years ago and has sat in storage since. The bike itself is cosmetically very clean and the engine does look like its been through a cleaning cycle. Apparently the previous owner was a racer and had intended to do some nostalgia races. for whatever reason he never finished up the bike and walked away from it. The guy selling the bike is not the owner and is trying to recoupe the storage fees (he does have the ownership). Anyway, I got the bike for a song so I won't be suprised if I have to put a little money into it, but I have a couple of questions.

What is the correct shift pattern for this bike?
Where can I get reliable info on setting up the carb (other than a manual)?
If the bike was in neutral, why would it be very, very difficult to move forward?

1 - 8 of 20 Posts - home of the 79-83 cb 750/900/1100F bikes.

throw some pics here and I'll try to tell you the issues I see.
I got the bike home and the tips you gave me were right on. The rear caliper was hanging up and the pattern seems to be reversed. However I noticed that she would sometimes slip back into gear, and was much easier to push when I pulled in the clutch than when she was in neutral. Any ideas?
some of the clutch plates might be sticking together from sitting. You can disassemble it to break them free or you can just get the bike running and then drive around the block pulling the clutch in and out.

pics of the bike?
I always love to see pics of "hot rodded" F's because there was a huge aftermarket for them when new but not much today. Some of the old stuff is kinda rare too getting a look at it will tell you if you have some standard stuff or you need to get outside parts sources (eg. a popular swap was and CR carbs but you can't get parts for those carbs from a honda dealer)

Edited by - geeto67 on Jun 01 2007 2:20:33 PM
did you buy a clymer manual or a factory shop manual? if you bought a clymer, you can download the factory shop manual here (it is nice to have both):

also there is a honda general shop manual that is a goo thing to just flip through.

DOHC cbF's are wetsump "shared case" oiling systems meaning that the engine oil is also the tranny oil and there is no oil tank, just an oil pan like a car. The faster you get the old oil out and fresh stuff in there the faster the bike will respond to any kind of tuning you will need to do to get it running.

oh , and make sure the inside of your tank is clean. It is a rookie mistake to clean a set of carbs and then run rusty gas through them.

With any cbF, if it is not in pieces then clean the carbs, new plugs, new battery, new fluids and try to start her.
e-mail them to me at [email protected] and I'll post them
just got the pics this morning - i'll post them tonight when I get home from work.
some of the things I spot:

- stock carbs
- stock pipes
- nice stock 1979 black bodywork
- really nice drilled rotos (not stock)
- 1981-82 wheels
- stock brakes and forks.
- really cool 1979-1980 only fender without the weird spoiler.

What boggles my mind is that the P/O went out of his way to to put later wheels on it but did not do the upgrade to the brakes. The 79 single piston pots are ok, but the twin piston front brakes the 1981-82 bikes had are un friggin believable for a vintage bike, and with the right pads almost as good as new sport bike brakes.

anyway, looks like an easy fix, so far. Only other thing I would check is the starter clutch (they always loosen on these bikes) then fire her up.

BTW, stock carbs are CV and bog city. Test the cv slide with an air hose to make sure it works because sometimes they don't.
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I don't mind.

remember motorcycles are 1 down and then 4 up for their gear boxes. you kinda have to have the motor rolling over for you to fully engage shifts which is why you may be only seeing a few.
1 - 8 of 20 Posts
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