Question about Honda CB 750 Motorcycles

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I submitted a problem with my CB750 Carbs I got a reply from Bike Doc requesting info on bike. According to Honda Ireland the bike is a CB750CB for the *** Market and imported into the US then into Ireland. It is Badged as a CB750 Custom Exclusive.I tried to reply to Bike Doc but kept getting rejected

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Fix.ya has made it hard to respons to 'solved problems' for reasons unknown to me, but probably related to reducing unprofitable chit-chat at the site. This comment is for your CB400/4.

Thank you for the 4 thumbs up and the kind words.

In this country, "official" owned vehicles, (federal, state, county or muni owned) are frequently are not 'titled' in the traditional sense, being owned 'by the peope'. As such, the same idea applies, the vehicle year is the 'year in which first titled', though it is not 100% universal in its application in all juresdictions. I surmise this is the reason for the discrepancy in your Yamaha title.

Looking at your assorted questions, you seem to be a motorcycle buff. What a nice hobby ... Good luck in your building - rebuilding efforts.

Posted on Aug 08, 2010

  • A Miller Aug 09, 2010

    Good morning ... as promised, but in the wrong place ( removed the 'comment' feature from the CB-400/4 premium question you posted), here is the response from my friend in HI:


    Not sure if this is a later model with no connection to the CB400/4 I have in my living room, but mine--styled like a cafe racer--was ONLY built as a '75/'76/'77 model.

    Here's a UK site that might help your pal;



    Given the love for cafe racing in Europe, this model MIGHT have been continued for the UK AFTER it was discontinued in the US in 1977,
    resulting in an '80 model, OR it is a completely different bike. I have no other explanation.

    I trust this will be of some help.

    Thanks again for using


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Dont understand the question.Whats wrong with the carbs?

Posted on May 02, 2010


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Hello all, I was just wondering how to fix an apparent open throttle on a 1982 Honda cb750 Nighthawk 750?

I suspect that the throttle cable is out of the end setting from removing and replacing the carbs or a return spring for the cable has broken off and not pulling the throttle back to idle position

Jul 12, 2016 | Honda Motorcycles

1 Answer

Factory carb settings

This can vary from year to year, model to model, and make to make. A service manual for your specific bike may shed some light on what the default settings are on your carbs. Sometimes a simple search on your year make and model of bike with carb adjustments can return the answer to your question. Here is an example: 1979 Honda CB750 Carb Adjustments. One other factor in this is the elevation you are at. At higher elevations the air is thinner making your bike run rich as there isn't enough oxygen to mix with the fuel. Once you know where your adjustments are, you can get them fairly close by slowly adjusting them with the bike idling. You want to turn slowly (1/8 turn at a time) until you hear the motor idle increase. For multiple carbs, start with one and repeat on all other carbs. If you continue to turn your jets after the idle increases, it will eventually start idling down again. I have been taught to try to find the boundaries going each way and seek the middle ground. Once this is performed on all carbs, you may need to adjust your throttle stop adjustment screw to bring yoyr idle back to specification. Good luck with your carbs, safe and happy riding to you.

Oct 15, 2013 | Suzuki Motorcycles

2 Answers

Clutch gl1000 honda creeps when put in gear hard to find nuatral sat 10yrs

Get car oil out - friction reducing properties ruin wet clutches - put bike oil in
Make sure cable is adjusted properly
Plates may get stuck together after time unused - see my tip for quickly releasing seized clutches
Ride Safe

Jan 07, 2012 | Motorcycles

1 Answer

I have a 1983 honda magna v45. I got the bike from someone that hasn't messed with it in about 6 years. After about the last 2 months of cleaning the carbs i got it running. Now when i put it in gear its...


Have you checked to see if the clutch lever is working properly? If the clutch stays engaged, the bike won't move. You can lubricate the clutch cable by removing it and taping a cardboard cone to the housing and pour a lightweight (30w) motor oil into the cone. Next, move the cable back and forth for a minute or so so that the oil will flow down inside the cable.

If the clutch cable is working correctly then then clutch plates are not disengaging when put into gear. Try different gears to see if it does the same thing. Also, have you changed the oil in the bike? Your bike uses a wet clutch system which means that the oil you put in the crankcase is also used for your clutch plates. Using a synthetic oil will cause problems with your bike (according to Honda).

Hopefully this will give you a few more ideas to try. If you need more information, please post a reply/comment and I will get back with you.

If you find this information helpful, please vote on this post. Thank you.



Jan 15, 2011 | Honda VF 750 C Magna Motorcycles

1 Answer

Removal of honda cb750 ignition switch

Most Honda ignition switches can be removed by unbolting one side of the head light, swinging it out of the way, reach up with a 10 mm socket on an extension, and unscrew the two bolts holding it in place. Once you pull it straight down you can unplug the harness from the base of the switch and remove it from the bike.

Jul 02, 2010 | Honda CB 750F2 Seven Fifty Motorcycles

1 Answer

My Bike idles really high but only sometimes

Did you replace the throttle cable?, you might lubricate the cable. I had trouble with a bike having similar problem, this took care of my problem. I hope this helps

Aug 08, 2009 | 1982 Honda CB 1100 R

1 Answer

My cruise surges and then relax while riding. What is the cause and what is the solution

It could be a number of things, firstly I would try to drain any water from the carbs using the drain screw provided. If this doesn't help, then please furnish more info, i.e. does it happen at a certain rev range, or any perticular weather conditions? ect.
Ride Safe

Please mark this as useful (if it has been!!)

Aug 03, 2009 | 1989 Honda GL 1500 Gold Wing

1 Answer

The front caliber on my 1975 cb750 does not line up (top to bottom) with the rotor.How do I solve this?

Excess up & down movement of the arm caused by a worn or seized bearing of the arm pivot will cause the arm to go out of true & thus out of line with rotor
Ride Safe

Jul 18, 2009 | Honda CB 750 Motorcycles

1 Answer


Hi, I have was looking through an old index for manuals and have found two links that may help you. They are for manuals covering 92-95 and 97 so one of them is probably the one you want.
Try these..

Feb 03, 2009 | 1996 Honda CB 750F2 Seven Fifty

2 Answers

Air filter smell like gas

It's perfectly normal for an engine with a carb to have an air filter that smells like gasoline. The reason being is because of a concept called "fuel stand off" - in a nutshell, the air that is going through your carbs towards the cylinders gets bounced back towards the air filter when the intake valves close. Since carbs aren't that smart, the air coming back towards the filter picks up even more fuel from the float bowl, and then heads in to your air filter box to say hello.

Nov 20, 2008 | 1986 Honda VF 1000 R

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