how to

  1. D

    Leaking left fork seal

    Is there an easy fix for a leaking fork seal? I was thinking of using a playing card to make sure it isn't just dirt in there. I bought an 81 cb750c last fall, has about 43k miles on it. The leak isn't bad, but I wanted to get it inspected this weekend. If I just replace the seal, do I need any...
  2. F

    Pilot Screw Adjustment 1981 CB750C

    Hi all, Long time lurker here! Recently picked up an '81 CB750C for super cheap that clearly needed some work...I've made it my summer project for this year, thanks to my wife :D The PO didn't really do my any favors, left it uncovered, in the rain, removed the carburetors and messed around...
  3. surveywaters

    Shoter throttle pull

    I have a '78 750k and I'd like a shorter roll on the throttle. Currently I have to over reach the grip to be able to roll it all the way on. I don't need a 1/4 turn just better than stock while retaining the OEM switrch housing.
  4. R

    Seat Foam replacement

    working on restoring my 72 K2 - but have noticed that the seat foam is getting brittle, Have been looking on E-bay at what they have to offer but unsure about the quality of the replacement foam. Has any one done a replacement on there bike and if so have you run into any problems Thanks in...
  5. lockeed

    Any CL-125 or CB-125 expert in the crowd? (Non CB750 related)

    About a month ago, I grabbed a 1969 CL125 as a father/daughter side project. We started disassembling the bike last week. I'm stuck on that air filter assembly. It's a long rubber piece going through the frame which comes out behind the engine. On the fw side the carb insert into it, and the air...
  6. lockeed

    Bike stored for 29 years - tips welcomed on engine oil flush and prep before startup

    I bought a 1977 CB750K about two weeks ago. Couldn't be happier, bike is 100% original with only 12,500 miles. It's been in storage since 1988. I started by removing the carbs, spent the last 2 days cleaning them, they were very dirty and gunked up. Next step was to change the oil and...
  7. S

    New passenger footrest and brackets.

    Hi. I need help. The last owner of my cb750 1975 has cut the passenger footrest brackets to the frame and I would like to weld others but I do not have the original measurements. Can you help me.
  8. lockeed

    Carb rebuild manual for SOHC 77-78 ? (Similar to SeanG manual for DOHC)

    Pretty exited, just found a pristine CB750K 77 with only 12,500 original miles. The bike has been in storage since 1988 under a cover in a garage. First thing on my list next week are the carburetors. Any of you guys know of a carb rebuild manual for SOHC similar to the excellent one SeanG did...
  9. D

    Installing Accel Coils '81 CB750c

    Hey everyone! I just got a set of Accel coils for my '81 CB750 Custom. A few questions... --Is it OK to just swap the old coils with the new ones? Is there any other componeny of the electrical system I'll need to tinker with? --The instructions recommend changing the (main?) jet in the...
  10. 3

    Dual Disk Upgrade

    First post from a new member here. I thought this may be the obvious, best place to get advice on a first time Cafe build I am starting with a 1980 CB750 Custom. This came with a single disk front brake. I prefer the look of the dual disk, so I went on eBay and bought a set of forks, c/w triple...
  11. P

    Any way to raise the seat height? '91 Nighthawk

    Hey guys, new here to the forums, and the motorcycle world in general. Just picked up a '91 Nighthawk 750 from Atlanta, it's extremely clean and has less than 15,000 miles on it. I have done research and looked into which bike I've wanted for the past year and settled on either this or an 83-84...
  12. K

    Cafe build seat issues by newbie for 91 Nighthawk

    Hello all. This is my recently acquired 92 Nighthawk. I am planning on turning it into a cafe racer. However, I did notice that the frame takes a dip in the middle (unlike many of the older versions). This makes is a little harder to find a good seat. If you have any ideas on how to make the...
  13. W

    Rookie 1978 cb750 owner!

    I recently purchased a 1978 cb750 off of Craigslist for a great price. Although it isn't running it doesn't seem like it needs too much work to get her running. The guy I bought it from said it needs some electrical work done. I'm a complete rookie/novice when It comes to bikes and working on...
  14. V

    1977 CB750 Slip noise when starting - Help?!

    Hi all, Newbie question was hoping you could assist with identifying the issue. I just picked up this '77 CB750 and seems to run good if it starts - however, just tried starting today and get this odd noise when trying to start (for the life of me cannot get it to start today) - sounds like...
  15. SlipperyPete

    How do I remove the seat and gas tank?

    Howdy - I just yesterday acquired a '79 cb750 limited. I can't figure out how to remove (or lift) the seat to get at the gas tank so I can remove it? I looked through the shop manual, but couldn't find the info in there. I'm thinking I should buy a Clymer manual which should have the info...
  16. H

    Need Help! Swapped my pegs around..

    Hey guys! First post here. I picked up a 78 cb750k about a month ago. The bike has been a lot of fun so far, but I'm having trouble with one thing. I swapped my stocks pegs, left side to right side and vice versa so they say a little lower for me as the original set up was too high for me. The...
  17. M

    Headlight Bulb Upside-Down?

    I have a new-to-me '83 CB1000C which came with the OEM fairing installed. I took it off and installed the original headlight but it seems like when I flip on the high beam it lights up my front tire instead of way ahead of me- Looking at the filaments, it looks like when the high beam is...
  18. B

    Chain and sprockets for 91 Nighthawk 750

    Hello everyone, first post from a newb. Thanks in advance. My first motorcycle was a 91 Nighthawk 750, this was 15 years ago. Got the nod from Momma recently to get another bike and was drawn once again to the Nighthawk after riding cruisers for the last 15 years. I picked up another 91...
  19. W

    CB750 super sport carbs running lean.

    Hi again all, I was able to get my carbs. all reassembled and installed. Checked my point gaps and cleaned and checked gaps on plugs. Emptied and cleaned out gas tank and put in new gas. I haven't installed to airbox yet just tried to get it running. Charged up battery and it roared to life...
  20. R

    Airbox to air pod?

    Hi everyone, Just picked up a 1979 cb750 10th Anniversary, in great condition, no leaks, no modifications and about 46,000 miles on it. My question is that it still uses its original airbox. How tricky is it to swap it out for air pods? Does it require replacing the carbs as well? Thanks...
  21. A

    How to lower front suspension

    I am trying to understand the proper way to lower the front forks on a 1982 CB750. From searching the forums, I have a general idea as how to do this but I want to make sure it is going to look the way I want it to. If you compare the photos I have attached, you will see two methods of lowering...
  22. W

    Carburetor set up

    Hi all, I have a 1978 CB750 super sport it is not an automatic. I'm cleaning the carbs. and trying to set them up. I noticed when I took the carbs off that I have one fuel line coming to the carb. There is smaller port toward the intake, this was not hooked up to anything. Is this a fuel line...
  23. M

    Looking at a CB750 that's been sitting for 20 years

    Hello everyone. My name is Mike. I've never owned a CB750 but since the 90's I've always wanted one. Today I was on a service call and was offered to go look at a 1978 CB750 that has been sitting in storage for 20 years. He husband died and she would like to get rid of it. Anything I should...
  24. C

    Complete Newbie

    Hi all. I just picked up a '72 CB750 from a friend (payment for helping him move), but I have no idea where to start. The bike hasn't run in 10+ years, the tires crumbled in the trailer on the way home, and rust flakes were falling off as I was pushing it into my garage. Title and keys are...
  25. T

    Is This a good buy?

    Hello guys! This is my my first post (i know i gotta post in noob section first, but i thought i should kill two birds with one post). I have been lurking around for a few months now, and reading and getting knowledge. Thanks to all the contributors here! I am looking at this CB750 - its a...
  26. D

    Brake Light Switch Spring

    Hi everyone, Firstly im new here and this is my first post but I cant find a section for introductions. Anyway im a new owner of a 77 F2 from the UK (County Durham) and I have a question regarding the rear brake light switch that I hope someone can help with. The spring on my bike is missing...
  27. N

    1980 CB750K Drive Sprocket Oil Seal Replacement

    Hey all, First time poster. Restoring my father's 1980 CB750K and I have hit a snag in the project. I have a pretty bad oil leak under the cover of the front sprocket and shifting lever. I have purchased new seals and I did my homework on how to remove the seal. Unfortunately, its not as easy...
  28. Flogger

    Tach Lights

    Anyone have any experience changing Tach and/or Speedo lights? Tach light is inop, presume it's the light... I wondered if I replaced one, if I should do both to make sure they match...
  29. W

    broken starter chain 91 cb750

    I can't see the starter chain. It is probably broken and is in the bottom of the crank case. will I have to split the case to fix it? white water rafter 6/3/2016 9:07 am
  30. W

    Looking for Advice on Removing Alternator (1991)

    I'm new and am hoping for the right info. The starter just spins. I removed it, found the chain tensioner but no chain. I think it broke and fell out of sight. I tried to remove the alternator for a better look, but the stator and housing will only come out 5mm. The rotor won't come out...
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