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  1. H

    frt. end shakes at 45m.p.h.

    I have a shake too. Will the brass/bronze swing arm bushing help with this?
  2. H

    Regulator/rectifier going bad? Also no left turn signal.

    Got a replacement regulator/rectifier circuit from cb750supply and swapped it out. Everything seems to be working alright as far as the battery charging. I bought a new battery a few months ago when I got the regulator and haven't had to put the charger on yet. As for the turn signal I think...
  3. H

    Forks seals leaking, again.

    Sorry it took so long to update but my grandfather had some 32W hydraulic oil. We put the in and I haven't seen any leaks since. It jars me a little more but that was expected.
  4. H

    77 CB750 - Jetting question

    Is there any procedure to shim the needles? I have a 1977 CB750K and I have seen people talk about shimming the needles a few times but nothing more than that it needs to be done.
  5. H

    What octane of gas are you using?

    I can't remember where I saw it but someone recommended jetting the carbs the next size up because of ethanol. Is this a smart move?
  6. H

    August 2015 Giveaway-Free Money for Motorcycle Parts-Enter for your chance to win!!!

    I can not remember if I did this or not.
  7. H

    Several High RPM symptoms

    Replaced all the friction plates, they were almost smooth, and have been running them for a couple days with no more problems. Checked the idle screw and it was tightened down quite a bit, must have been from when the jets were clogged. Thank you for all the help!
  8. H

    Several High RPM symptoms

    Just to make sure, I only need the friction plates right? Not the steel clutch plates.
  9. H

    Several High RPM symptoms

    I only have the Clymer manual. My father, who was the original owner, has been helping me and has more tools including the impact. Looking at cb750supply.com there are three different plates that fit a '77 K. How do I know which one(s)? Thank you for the offer, if it gets too out of hand i...
  10. H

    Several High RPM symptoms

    I changed the oil about a month ago. I have been using Mobil 1 Racing™ 4T Motorcycle Oil (https://mobiloil.com/en/motor-oils/mobil-1/mobil-1-4t-motorcycle-oil#10W-40) for a couple of years. My carb boots were changed about the same time as the oil (we ordered replacements from David Silver...
  11. H

    Several High RPM symptoms

    Honestly, I have no idea what it would feel like if the clutch were slipping. There always seems to be a distinction between the clutch engaged and disengaged. What are the most common signs?
  12. H

    Several High RPM symptoms

    I guess a little elaboration would help. 'My bike' is a '77 CB750K. Because almost everything on this bike is at least 30 years old I would not be surprised about the friction plates. I have had problems with the carbs before and was trying to get through the simmer so I could send them off...
  13. H

    Several High RPM symptoms

    Lately my bike has been between 4k and 5k at idle, which is annoying but I think I just need to play with the idle a little more, but what really has me concerned is this. If I accelerate too hard (or at all sometimes) my tach will jump almost 1000 RPMs with gradual acceleration/ power gain, if...
  14. H

    It's True, It's Real & It's Here - Free Money for Parts! We Give It Away! Enter Now

    Need some funding for my money pit.
  15. H

    Free Money for Parts Giveaway for March 2015 - Enter for your chance to win

    Come on, daddy needs a new regulator.
  16. H

    Shimming Needles

    I've been out of the game for awhile but warm weather is coming so I want to get running again. I've seen a few posts where people have used washers to shim the needles for their carbs but not really a how to, what to use, or a why. Before winter we had her running but only at about half. It...
  17. H

    Ammo Can Saddlebags

    I've been looking around (again) for ammo cans to mount as saddle bags. I'm thinking about using the "fat" .50 cal cans and was wondering if anyone knew a decent way to mount them. At first I thought, "drill some holes and just throw them on there" but quickly realized that would be bad. So...
  18. H

    Forks seals leaking, again.

    When I get it pulled apart again I'll double check everything and look twice for corrosion. I don't remember there being any but since it isn't always garaged and 30+ years old I wouldn't be surprised.
  19. H

    Forks seals leaking, again.

    About a week after I replaced my leaky seals they started leaking again but this time it was worse than before. Is there anything extra that I can apply to help seal it or is there a specific brand of seal that does better than most? I got my seals from vintagecb750.com We found a step by...
  20. H

    Too much air, not enough gas?

    Thanks Dirtdigger! Clearing the crud out of the carbs/jets with a paper clip is how we were able to get the bike to start, but I'll check again because there is no telling what was hiding in the works that can get caught in there. The idle screws for the 77 K, is it out to rich in to thin...
  21. H

    Too much air, not enough gas?

    1977 CB750K I was finally able to get all four cylinders firing the other day but when it's running I notice the the pipes for 1 and 2 aren't getting nearly as hot as 3 and 4, which get very hot and very quickly. One and two aren't nearly as vocal as 3 and 4 and unless I'm accelerating they...
  22. H

    Have spark, have compression, have gas, but no vroom on 3 and 4.

    Had everything pulled apart today and we were running through all the options of what could be causing our fuel when we decided to take the brass jet assembly apart. I would expect there was almost 30 years of crud gumming it up. We'll get everything put back tomorrow and I'll let you know...
  23. H

    Let's see your CB750

    I've seen a couple people talk about the "usual upgrades". What do these upgrades consist of? I'm trying to remain stock as much as possible but I have put the PAMCO ignition on and my grandfather put a 4 to 2 exhaust on it before I acquired it. I'm also aware that I need to replace my swing...
  24. H

    Fuel Leaking from Accelerator Pump.

    Will the 3/16 fuel line work for the vacuum lines?
  25. H

    Need a backrest for my wife.

    I can't do it right now. With this semester ending my GI Bill doesn't kick in fully until July time frame so funds get tight for a couple months.
  26. H

    Fuel Leaking from Accelerator Pump.

    While working on trying to get 3 and 4 to fire I noticed that the throttle was getting very heavy. I look to see if there was anything binding it (I didn't see anything but I think I'll replace it anyway) when my dad and I see gas shooting out of the carbs. Upon closer inspection it look like...
  27. H

    Need a backrest for my wife.

    Are all the rack/rests interchangeable between the 750s?
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