WANTED: CB450K0 "seat spring" part 77203-283-010
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Thread: WANTED: CB450K0 "seat spring" part 77203-283-010

  1. #1
    Senior Member Shinchan's Avatar
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    WANTED: CB450K0 "seat spring" part 77203-283-010

    Finally found a seat latch knob, but it appears I'm missing part 77203-283-010 as well. Does anyone have one for sale? Part #8 below:

    WANTED: CB450K0 "seat spring" part 77203-283-010-screen-shot-2015-12-14-11.06.34-am.jpg
    asafayan likes this.
    1966 CB450K0 daily rider

  2. #2
    Senior Member Shinchan's Avatar
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    Anyone? I would take a functional equivalent, even if the appearance is slightly different.

    Seems like this part is harder to find than the knob!
    asafayan likes this.
    1966 CB450K0 daily rider

  3. #3
    Member asafayan's Avatar
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    Hi,

    I just bought a '67 Black Bomber from a nice gentleman in Fort Collins. I live in Colorado Springs. I'm looking for parts 7,8 and 6 ! Any luck?

    Best,

    Amir

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  5. #4
    Member asafayan's Avatar
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    https://www.partzilla.com/catalog/ho...r/cb450-a/seat

    That shows the parts as:
    8. knob -77201-283-010
    9. spring -77202-283-010
    10. seat -77203-283-010

    Where you able to find both the knob and latch seat (what looks like a bolt to me) but not the spring?

    Thanks,

    Amir

  6. #5
    Senior Member the-chauffeur's Avatar
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    'fraid I can't help with the spring itself (or any of the other bits for that matter), but you might be able to find something similar if you know that it looks like this:


    WANTED: CB450K0 "seat spring" part 77203-283-010-spring-latch_medium77202283010-01_4781.jpg
    asafayan likes this.
    CL77 (1966)
    CA77 (1966)
    SL350 K0 (1969)

    SL350 K2 (1971)
    CB450 K6 (1972)
    CB750 K2 (1972)

  7. #6
    Member asafayan's Avatar
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    Is that a generic pic of a spring or the actual spring? My problem is mine is missing and all I have so far are the schematic drawings. I'm also wondering if I can make do with just the knob and simply screw it in ( I see threads on the shaft of the knob). Unless of course the whole purpose of the spring is to actually draw in the know (shown as item #6 above). If that is the case, I don't see why there would be threads on the shaft of the knob.

  8. #7
    Senior Member the-chauffeur's Avatar
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    It's the spring - look closely and you'll see the CMS logo. Click the image and when it zooms in, you'll also be able to read the part number in the top left hand corner. CMS don't have it in stock, but they photograph everything they sell/have sold, so you can be pretty confident its exactly what you're looking for.

    Can't help with any explanation for its purpose or how that set up works; you'll need a K0 owner for that. My guess is that it's there to put tension on the knob to stop it backing out under vibration. I suspect this was part of Honda's habit of over-engineering its early generation bikes from around that time (I've written a more detailed explanation of that business practice in another post somewhere). You can probably gauge how essential - or otherwise - it might be by looking at the design changes between the K0-1-2-3 models. But if my hunch is correct, you can almost certainly live without it unless you're going for a concourse rebuild.

    I just thought I could find an image that might help.
    asafayan likes this.
    CL77 (1966)
    CA77 (1966)
    SL350 K0 (1969)

    SL350 K2 (1971)
    CB450 K6 (1972)
    CB750 K2 (1972)

  9. #8
    Senior Member pemdoc65's Avatar
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    The outside diameter of the collar (part #8) is sized to fit snugly into the small end of that spring.
    asafayan likes this.
    1965 CB450 K0
    1966 CB450 K0 (current project)
    1964 CB77
    1965 CB77
    1964 CB72 (upcoming project)
    1965 CB72 (current project)
    1964 CA77
    1972 CB350 K4
    1960 Triumph TR6 Trophy (always looking for parts to finish this one...)
    1980 CB750K
    1982 XL250R

  10. #9
    Senior Member Blue2swing's Avatar
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    The springs are sold on eBay for about $14 + $5 (Shipping) + eBay tax. Around $20 or so dollars I’m guessing. Search part number 77202-283-010 on eBay.

    https://rover.ebay.com/rover/0/0/0?m...2F172301374260

    https://rover.ebay.com/rover/0/0/0?m...2F232409583398

    -Isaias

    Happy Thanksgiving by the way.
    asafayan likes this.
    • 1975 CB750 K5 (Brat and loving it, but do miss the smoothness of a stock ride)
    • 1973 CB450 K6 currently being rebuilt.
    • 1967 CB450 K0 Black Bomber. Acquiring parts for rebuild.
    • 1966 CB450 K0 Black Bomber. Acquiring parts for rebuild.


    Still very green and learning. All help is very much appreciate!!

  11. #10
    Senior Member Blue2swing's Avatar
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    The knob can be bought as a reproduction item through clauss studios via eBay at,

    https://rover.ebay.com/rover/0/0/0?m...2F122345490863

    Or through their website at,

    https://www.claussstudios.com/store/...Seat_Knob.html

    -Isaias
    asafayan likes this.
    • 1975 CB750 K5 (Brat and loving it, but do miss the smoothness of a stock ride)
    • 1973 CB450 K6 currently being rebuilt.
    • 1967 CB450 K0 Black Bomber. Acquiring parts for rebuild.
    • 1966 CB450 K0 Black Bomber. Acquiring parts for rebuild.


    Still very green and learning. All help is very much appreciate!!

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