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Thread: Honda C50 not starting

  1. #16
    Join Date
    25th March 2004 - 17:22
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    RZ496/Street 765RS/GasGas/ etc etc
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    Sure, C50s have always been hard to kick over.

    & CDI is a misused term, but lets not go into that.
    Don't you look at my accountant.
    He's the only one I've got.

  2. #17
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    24th September 2004 - 06:46
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    Had a wee giggle when I read this- http://en.wikipedia.org/wiki/Honda_Super_Cub

    Got an '72 in the garden shed awaiting some Honda luv'n myself.

  3. #18
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    3rd June 2005 - 15:20
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    Quote Originally Posted by xww10 View Post
    Hi Dave,

    Thanks for the support. I pulled the spark plug and its so worn the electrode is barely poking out of the ceramic but it was still sparking! Remarkable it was running before. Anyways, I changed it for a new one (I thought it was expensive at $7). Installed it, kickstarted it, 2nd kick and it runs! Amazing little engine this.

    $7 for a plug?

    the most basic of mine are

    $20 a pop....and i need 4.

    if i buy iridiums they r $48 each....but i dnt cus iridiums are useless in older bikes...only good for new fuel injected ones.

  4. #19
    Join Date
    23rd December 2007 - 22:48
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    1989 Yamaha XT600 2KF
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    Spain
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    congratulations

    Congratulations on having one of the most reliable (once sorted) little bikes in the world!
    C50's 70's and 90's have been used to even tour RTW! ( Round The World) check out the web on www.google.com or www.horizonsunlimited.com

    They have even been used to haul loads that would make a trucker weep!

    enjoy yer little gem, I wish i still had mine

  5. #20
    Join Date
    10th December 2007 - 14:23
    Bike
    1991 Honda CD250U
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    Christchurch
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    44
    Quote Originally Posted by skidMark View Post
    $7 for a plug?

    the most basic of mine are

    $20 a pop....and i need 4.

    if i buy iridiums they r $48 each....but i dnt cus iridiums are useless in older bikes...only good for new fuel injected ones.



    My saab uses 5.50 a pop ones so I thought this expensive... I'll stop complaining now. Anyways, thanks for all the support guys. It is a little beauty these c50s. I have finally sorted out the poor starting. Turns out that the ignition lead was not tightened properly. It has a plastic elbow which turns 90deg to the spark plug. This is screwed down onto the lead itself. I guess I loosened it a little (I thought it swivels). Anyway when I tightened it, it now starts first kick every time. As for the idle... now that's getting a little funny. After setting the pilot screw to the best running condition (which is nearly all the way closed so if I'm correct, that's leaning it right? If its all the way out its rich?), I try to turn the throttle stop screw to lower it... bit by bit I do it until the idle suddenly goes up and down up and down. It does this without stalling although the low end is a bit too low. The cycles are quite regular. Has anyone come across this before? At a traffic light I have to time the gear change so that I don't launch myself when the idle is high.

  6. #21
    Join Date
    15th December 2007 - 05:05
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    Black Suzuki
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    check spark plug gap is not too large, if it is, the coil fails.
    figured this out after having to replace 2 coils.

    out of the approx 20 bikes I have owned over 35 yrs, the C50 was probably the slowest but was alot of fun and went places it was not designed for.

  7. #22
    Join Date
    29th December 2004 - 14:24
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    Best thing about c50's is they're really easy to steal, just kick the keylock off the side of the bike, and the normally closed ignition system is bypassed :-)
    ---Cut Here---
    '94 YZF750R - I love the smell of new tyre in the morning...
    EXUP Brotherhood

  8. #23
    Join Date
    10th December 2007 - 14:23
    Bike
    1991 Honda CD250U
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    Christchurch
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    Yoohoo! I've managed to get it running well. I took the throttle slide out, cleaned the needle, took out both screws cleaned them up, replaced the throttle slide return spring (it was one mangled mess, thanks KG Motorcycles), sprayed some more carb cleaner down the carb (but it was pretty clean anyway). Now it starts first kick and the idle is low and steady! Great! Thanks for all the replies everyone, hope everyone had a good holiday!

  9. #24
    Join Date
    29th December 2004 - 14:24
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    Quote Originally Posted by xww10 View Post
    Yoohoo! I've managed to get it running well. I took the throttle slide out, cleaned the needle, took out both screws cleaned them up, replaced the throttle slide return spring (it was one mangled mess, thanks KG Motorcycles), sprayed some more carb cleaner down the carb (but it was pretty clean anyway). Now it starts first kick and the idle is low and steady! Great! Thanks for all the replies everyone, hope everyone had a good holiday!
    If you like, I have some brand new front bake pads that should fit your C50 kicking around, I've had them for about 10 years, you can have 'em if I can find them :-)
    ---Cut Here---
    '94 YZF750R - I love the smell of new tyre in the morning...
    EXUP Brotherhood

  10. #25
    Join Date
    10th December 2007 - 14:23
    Bike
    1991 Honda CD250U
    Location
    Christchurch
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    Thanks Monsterbishi! That would be great if you don't have a use for them anymore! Sweet, that's very kind of u. Btw, do you have any recommendations for chain lube? The Haynes manual recommends a chain aerosol lube. I bought a can on the weekend which was $17 for 400g (Silkolene). Is there something cheaper I could use that works as well? My C50 has a completely covered chain save for a small inspection hole. Is chainsaw bar lube OK? That was like $9 a litre

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