carburetors

Hi, I’ve got a 1982 750F DOHC & have just sorted the valve clearances. The bike runs better now but the revs are all over the place & it doesn’t go back to tick over immediately and it’s running rich. I’m presuming the carbs need overhauling. Now, do I have to break them down to individual carbs...

I've been tinkering with this bike for years (cosmetically). PO put pods, 4 to1, and dyna ignition (that i know of). I'd like to sell it but i want it to run right before i put it up. Couple years ago i fired it up to take it for a ride and it was running rough, chalked it up as dirty carbs and...

I went for a short ride, i adjusted the idle. about 1200 rpm. After i went for a longer ride, i noticed the rpms at 2500 when I stopped at red light in neutral. If i adjust the idle again, rpms are too low when cold start. ?? should i be checking anything else. I also noticed rpms at 5000 rpm at...

Now that Ive got the charging all up to snuff I got a chance to actually ride the bike. Its great at around town speeds but when i took it out on I35 she ran hard up to about 70 MPH ( which is now on the main fuel circuit ). Think I was at around 5,000ish RPMS. Anyway the exhaust is the...

Hi folks, I pulled my bike’s carburetors off, and there’s a hose that comes from a “T” right in the middle of the carburetors, so I have no idea where to connect it, can someone pleeeeeease help me out? Thanks a lot

Hi there Recently bought a 1976 cb750 DOHC. Carb 1 and 2 are not firing and can't understand why. Can anybody help? Any kind of insight to this would be muchly appreciated! Thank you.

What are the stock jet sizes for a 1977 sohc?

Well I have a set of OEM used insulator boots, the ones that install between the intake ports and the carburetors. The number two boot doesn't seem to install onto the intake ports all the way when the other boots are fully seated. It just seems too short or the geometry is wrong. Any tips...

I'm finally starting a rebuild that's been parked for several years - 1974 CB750. Right now I'm looking for a carb rebuild kit, airbox, and front fork assembly. An alternative to the airbox would be pods. Thanks for your experienced input. I've been riding a Goldwing for a while, and am ready...

You should see all the ninja hooks I've created to try and snake this nozzle. On the number 1 carb, the nozzle is plugged. Can i drill out the small brass ball underneath the nozzle on the base of the carb to grant access to the nozzle? Seems like the only way to access this thing. I've...

Hey guys, I am trying to do pods on my 82 nighthawk. Anyone have any tips or videos on how to mount the carbs without the airbox? Thank you!

Hi All. First of all hello to all CB750 users and riders ;) New here - will introduce myself then - coming from Poland, riding Hondas since 20 years - my first bike CB450s still by me ;) Now riding also a CB750 from 2001 - turning it into cafe racer. This is how it looks now: I want to use...

I have a 81 cb750f engine what other year carbs fit it?

What other year carbs will fit my 81' engine?

How do I set the air fuel mixture on a 77 cb750? What are the settings that the screws are supposed to be at?

Hi all, I'm having fuel issues and I'm stumped on what it could be, I've ran all different main jet sizes to play around with fuel after 1/2 throttle. Was running 117.5 mains in it and when I would get on it hard it would spit and sputter and my dad riding next to me says it would smoke alot, so...

I took apart and rebuilt my 1978 CB750f carbs. When I took off the accelerator pump fuel rail lines I found brass bushings inside the fuel line. I do not see anything like that on the carb schematics. Are these barrels needed? I'm guessing it is for increased fuel velocity? Please let me...

After some hours of looking from site to site and scrolling eBay till motion sickness.. can anyone explain why a set of stock carbs are so hard to find? I would love to get a set of mikuni36mm or some CR's but my wallet is not that deep for that. I figure these things would be lying around every...

I have a cb750k that the carbs are locked up solid. The bike has sat for 32 or so years and so I need to rebuild them, is there any good kits other than Randakk? What should I soak them in to loosen them up? For seized cylinders I use diesel and atf. Would that work on these?

Have bike at mechanic getting carbs rebuilt. Carb kits purchased were bought from VintageCB.com kit came in manufactured by Napco Corp Japan. (APCO) After getting into 1 carb found some scorching on needle. The # on needle is F2D51E. The replacement in the kit # Y41. Appear to be same length but...

I'm having trouble getting my carbs back on after I rebuilt them. For some reason I can't get both sets of boots to line up and stay with the air box. Any recommendations for putting mini air filters on each one? If I do will it still hold the carbs?

This piece now stick out the bottom of the carb slightly...the head has more threads, and seems taller...Ill get a side by side in the morning These o rings seem WAY too small....what do you think? Not sure where this goes... This was included, but doesn't match anything removed...

Hmmm... Do you think something got into this airbox? Just thought I'd share part of my adventure in building a bike from a couple of basket cases.

I was given a 1992 cb750 non running. I love the challenge of getting old bikes back together and running. Going with stock. I'm pretty familiar with the workings of many old bikes but not sure what these little things in my air box near the air cleaner connecting tubes. It looks like...

Hi all, I was wondering if anyone has put out an extensive rebuild guide for the sohc carbs, similar to this awesome guide on the DOHC? http://www.cb750c.com/modules.php?name=Forums&file=viewtopic&t=13611 Did two DOHC carbs with this guide, and now woking on my first SOHC. Outside of the...

Hello again everyone, I'm moving onto the next phase of restoring this motorcycle. When I bought it it was completely dead. Don't think it's been started since 1991. Well, I've fixed up some electric problems, cleaned out the carbs and I oiled up the cylinders before starting. It has the...

Hey everyone, Recently new rider. Just bought my second bike to learn more about bikes. I got a 1993 Honda CB750 Nighthawk. The previous owner was cafe racer customizing it and did some changes. One of which was adding K&N individual air pods. I was told by him that the I would need to rejet...

Well, I knew this was going to be a long process. These carbs had about 15 years of varnish sitting inside of them. Finally dove into this "rat's nest"......literally....Honey Bunches o Oats... First thing I did was read the carb overhaul chapter in the service manual. It started the tear...

Hey guys, New to the forums. I just bought an 82 CB750SC that is needing a few things before she's road worthy, the main thing i'm having issues with is figuring out how to install The stock airbox, PO installed pods and I hate the cheap little bastards:banghead:. I found and bought an airbox...

Hey guys need a little help. I have a 1975 cb 750 with 4 CR carbs. I flooded them real bad and since then the bike will not idle and has lost a lot of power. it is not missing it just want go as fast and it is a lot harder to get it going from the start. If i give it a lot of gas it wants to...