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  1. Replies
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    The rear boots pretty much pnly a Honda part....

    The rear boots pretty much pnly a Honda part. Fronts (to head) can be got in a couple other places.
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    156

    Shouldn't be if the cable connects to linkage to...

    Shouldn't be if the cable connects to linkage to work correctly. '76 used the round top Keihin and the '77 went to the later (PD42?) carbs with an accelerator pump on them, probably a sign of the...
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    Great. Carb sync can easily do that if one is too...

    Great. Carb sync can easily do that if one is too high compared to the others, it then flows enough that when the engine drops back to idle the high one hangs the idle high. Why? Because the high one...
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    That main fuse is a joke. I replaced mine exactly...

    That main fuse is a joke. I replaced mine exactly like you only some 30 years ago when I touched the main and it simply crumbled into dust to have nothing there. One second it was there, then it...
  5. If they use ethanol in your local fuel then...

    If they use ethanol in your local fuel then likely a lot of the flooding, rust in tank messing up the carb needles. Ethanol + older bikes = fits.

    Most owners never set the valves ever and that...
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    If anywhere in the restore you changed the main...

    If anywhere in the restore you changed the main ignition switch to an Emgo branded one then suspect that.
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    Missed one and aimed at post #1..............set...

    Missed one and aimed at post #1..............set the mixture screws at close to 2 to 2 1/2 turns, it helps to richen the idle based on the original EPA lean settings and it also helps with popping in...
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    I basically told him the same thing I'll tell...

    I basically told him the same thing I'll tell you, and that is that there is no way to be accurate on jetting guesses as the carbs are CVs and depend way too much on overall engine condition to open...
  9. Thread: cb650 custom

    by amc49
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    121

    Depends on your viewpoint. Not many were made but...

    Depends on your viewpoint. Not many were made but nothing outstanding about them. The '79 model was the best one as it used direct lift rather than CV type carbs, it had more get up and go. May not...
  10. You will be making your own as nobody does that...

    You will be making your own as nobody does that switch enough to tell you. You'll need to block off the vacuum nipple to the #2 carb that the others do not have. Your issue will be the angles like...
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    Check PM.

    Check PM.
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    Starter button may be futzed inside, both...

    Starter button may be futzed inside, both headlight circuit and starter meet inside it.
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    You will get hesitation if the timing is slow.

    You will get hesitation if the timing is slow.
  14. Thread: Center Stand

    by amc49
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    108

    Yes, welding on frame required, the 'eyelets'...

    Yes, welding on frame required, the 'eyelets' were part of the frame and not available without it. If you are thinking of simply slipping in the stand axle and using it only on a temporary basis to...
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    Both those small meter bulbs ground through one...

    Both those small meter bulbs ground through one of the green ground wires in headlight shell. There are also power supply black wires in the shell, plugged into one of the BLACK receiver plugs is a...
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    Remove the nut that holds the tank spigot on,...

    Remove the nut that holds the tank spigot on, there is a plastic vertical tube filter above it that gets stuck in tank. Clean it. If ethanol is used in your local fuel and tank is rusting it will...
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    The pilot jets are commonly plugged and super...

    The pilot jets are commonly plugged and super hard to get 100% clean and you cannot see the problem.

    The syncing vacuum takeoff points are in the head, the small phillips screws you see just in...
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    Yes. I did it for a long while. ...

    Yes. I did it for a long while.

    https://bmwmotorcycletech.info/section6.htm

    Enough to choke a horse on the subject.
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    Yes. I did it for a long while. Don't let the...

    Yes. I did it for a long while. Don't let the tire ever get low on air, the tube type tire does not lock to a tubeless rim as well as a correct tubeless tire does, it can slip under hard braking to...
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    I strongly advise you to NOT RUN that setup, the...

    I strongly advise you to NOT RUN that setup, the beads are NOT the same (there are seams in them on a tube type that will leak and the lip change is not nearly as violent as a tubeless is) and if...
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    The rotor on the DOHC is famous for testing as...

    The rotor on the DOHC is famous for testing as good all day long then not being so. They short internally and can charge at lower rpm but put bike out on the highway at steady higher rpm and then it...
  22. I for one have never seen a 750 that used a #30...

    I for one have never seen a 750 that used a #30 pilot, they were always 35, 38, or 40.

    http://www.globalarray.net/user/mike_in_phoenix/motorcycle/text/specs_revised.html

    There is no 30 listed...
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    Many block off the air valves as shown on page 39...

    Many block off the air valves as shown on page 39 and 'bypassing the air cutoffs' in this...........

    http://www.cb750c.com/publicdocs/SeanG/Honda_Carb_Manual_revG.pdf

    That way you don't need...
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    Compression test to make sure you aren't wasting...

    Compression test to make sure you aren't wasting your time. Nobody ever sets the valves and then they burn, that will never idle correctly.

    Sync the carbs, if idles are set too far up on one or...
  25. Thread: Whining noise

    by amc49
    Replies
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    360

    Look for the audio turn signal buzzer on that...

    Look for the audio turn signal buzzer on that one, they used them around that year to let driver know the signals were still working. That one may be acting up, simply unplug it to stop the noise.
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