carburetors

G'day guys, just throwing my 80 model 750k back together after pulling it all apart, and have a little problem. I rebuilt the carbs, but having put them back on, I've attached the throttle cables but the throttle doesn't actually work....when you pull the throttle it doesn't return. I have...

I have a 1981 cb750c and im having trouble finding a carb for it, the only carb i can find is off a 750f i was wondering if i could throw that on my 750c.

Hey All, Got my 82' cb750 first try starting after a week or two of cleaning. Although, I can not seem to get her smoothed out, she started to ghost idle to 3 or 4k and popping from the exhaust. I plan to check the boots for air leaks, but I was hoping someone would be able to give me some...

I've finally got my '72 rebuilt and running, and am on to adjusting the carbs. I have pods so I will be rejetting, but for the time being, I just want to get it to a functional state. I looked in the manual, and it depicts a very large multi-slotted airscrew. This is of course nowhere to be...

Hey Everyone, I've Been working on my CB750 for a few months now and have found a pretty decent amount of help on the forums. Before the bike was barely running and wouldn't idle below 2000 rpm, Now its quite better but still a ways away from running well. I'm not a mechanic so don't be...

Hi Guys Having trouble with putting on the airbox , connecting air rubber tubes proberly to the carburettors . They rubbers act like they are to short and pulls out of the airfilter case when they are in place opposite on carburettor …..its driving me insane now :laugh: Is there any tricks here...

I've rode an 82 CB750C for a few years. This year, I've been unable to get it started. After testing for spark (it had spark) and swapping out the air filter (should have done that before trying to start it), it still wouldn't start. I left it alone for a while, as I thought I needed a...

Hi, I posted on my other thread(with same user name) as well, caus I didn't know if that post would show up as new. 74 cb750. My plugs foul(carbon up) after just a couple miles and just can't come to the problem. just did compression and good at 148-150, all 4. and it did the SAME before new...

My 1982 CB750 Custom was running terrible and I ended up pulling the carbs off to clean them. I've had the bike since 1985, but didn't ride it much as it started having "issues" with running bad and not charging the battery. I have only 17,370 miles on it. The inside of the carbs didn't look...

I was given a CB 750. Needs some work.. I know I need a carburetor and airbox(or alternative). . This is my first motorcycle and I'm really excited about working on it and getting it road ready. . any advice on where to get the parts I need would be great. (Pretty sure that's all I need to get...

I have recently acquired a 1980 CB750C. The P.O. tore apart the carbs, eventually realized he was in over his head and bought a used replacement set and then had someone rebuild them. I have taken them apart for my own inspection and habe come across something I can't find much info on. The...

So I have been tinkering with my carbs for the last couple days and I can't seem to get them right. I know I will never get them perfect but I need to get them to lean out and stop back firing throught the exhaust. The bike is a 1981 cb750k, running CV carbs, 4 into 4 exhaust that goes back just...

Hey guys, I need your help. I know this is a CB750 forum, but I've looked everywhere else so I figured I'd try here. I have a 1981 CB900F and I need a set of vacuum piston springs as whoever worked on this bike before me, has 4 different sizes and they're all damaged. I've checked all of the...

This applies to my 1999 Honda, 200R dirt bike, single cylinder, 4 cycle. Replaced the carb. The bike will start, idle for a few seconds then stop. Once it idles for a minute or so and you touch the throttle slightly to rev it it, it stops. Fuel flow is good from the tank to the carb, pilot jet...

I pulled into work. I noticed fuel leaking from the end of the closed carb? Any ideas where. I dont have many tools on hand.

Does anybody by chance know what the standard length and free play of the push and pull cables on a 77?

Hey Everyone, I just rebuilt the carbs on my 1978 K8. I had an issue with a vacuum leak before so while changing the boots I used the opportunity to buy rebuild kits for the carburetors. -replaced all the jets apart from the slow jet (as a new one wasn't included in the kit), Gaskets...

When I bought my bike it had pod filters on it and it runs like crap, so I just bought a stock air box. I haven't been able to find any clear guides on how to install it and I want to make sure I do it right as far as all the tubes go. Can anyone give me some instructions on proper install? I...

Hey all, I decided to get rid of my stock exhaust and changed it for a Delkevic 4-1 megaphone exhaust last summer. Of-course some rejetting was necessary so i went ahead and changed the main jets from 68/102 to 75/112. It seems to run pretty well except for two things, It's a bit boggy in the...

My fuel guage is on empty. It never worked since purchase. Where do i start to look for a fix? Normally i ride until i run out of gas. Hit gas station on reserve. Side note trip meter wont reset either button stuck. 82 NH 750. Thanks

Hey everyone, I'm doing a full rebuild on my PD 42 carbs. Ive spent the last few hours scrolling the internet trying to figure out the type of tubing and size between the carb bodies to no avail. Im guessing the yellowed tube is a vacuum tube and the black is fuel line. Does anyone have a...

Hi there fellow CB750 enthousiasts I did full restauration on a 1983 CB750SC Nighthawk See pictures. I did everything and went throught everything except removing the cylinder head from the engine. Everything else is brand new or rebuilt, including the carbs (rebuild) I have been driving for...

Hey Everyone, I have a 1978 750K I've been having trouble getting a decent idle. I can get it down to around 1600 RPM, Any lower and I will get that odd pop hiss sound and the bike will die But, when my idle is working at that low the bike will bog down and stall if I give it too much...

Howdy - Just finished a build. Need to find somebody in Chicagoland with experience that can dial in the carbs on a '77 CBK to get it running smooth...... Thanks

Hey Everyone, Just started a CB750 project and this is my first day on the forum. I have a 1978 K8 I plan on rebuilding the carbs, But after a bit of research I've noticed that finding parts for the 77-78 carbs is much harder/more expensive compared to the K0-K6 Is it feasible to put the...

Hi, I have CB750K(Z) -79 with Mikuni VM29SS carbs. Does anyone else has this kind of set-up and could give an advice about the jets? What size should I buy, so it will work as smooth as possible. I have pretty straight custom made exhaust (4-2-1) and oval shape pods. Thank you guys!

Hi, I’ve got a 1982 DOHC & I’ve broken down & stripped the carbs. I’m running it with the stock air box & a K&N filter. The jets are 107 & 68, are these the right size or not? The other thing is that in 2 of the carbs the 107/68 jets are switched around! Now, which orifice should they be in ...

Hello everyone, I am new to the forum. I got a good deal on a 1979 CB750L. It is in great shape overall. It just reached 15k miles on my 25 mile ride home. It runs ok, shifts well. So far, seems to need new front brake pads. These act like they were oil soaked (as in fork seals leaked on...

I've lost two of the nuts that's on top of the carbs for adjustments. I've looked at many hardware stores, but they are all too small. I know its thread size is M4. Are there any suitable alternatives? That one nut doesn't seem to have a part number on its own.

thanks to the support of AMC we purchased the CB750F body kit and now on to the next step Carb rebuild and engine gas kit so i have found several carb rebuild kits the most expensive is the RANDAKK https://www.randakks.com/honda-dohc-4-randakk-master-carb-overhaul-kit-version-b.html...