kamasura motored bike

Discussion in '2-Stroke Engines' started by Big Frank 18512, Sep 2, 2008.

  1. Big Frank 18512

    Big Frank 18512 New Member

    My iPhone won't let me search, so I'm sorry if this has been gone over before. I've acquired a 1980's Kamasura friction drive bicycle. Anyone have one of these or have experience working on one? I believe it's a 40cc 2 stroke.

  2. stude13

    stude13 Active Member

    hi big; could we see some close ups?
  3. Big Frank 18512

    Big Frank 18512 New Member

    Ok I found out a little more about it. It is a Kamasura VRX 250 and it is considered a moped. Here's some other specs:
    1987 KAMASURA 250 VRX
    Manufacturer: Kamasura
    Country of Origin: U.S.A. (I doubt this info... Sounds Chinese)
    Engine: 39cc, 2-stroke, single cylinder,
    reed valve, air cooled
    Transmission: Friction
    Top Speed: 30 miles per hour
    Years of Production: 1970s-__
    Number Produced: _____
    Original Cost: $695
    And here's some photos...
    Anyway, it's missing the original fuel tank, last owner replaced with rack mounted tank. It definitely needs a new plug wire, as it has a bare spot that looks a bit frayed. The engine turns, but won't start and it's leaking fuel all over... bad carb? I'm not familiar with carburetors. I've only worked on my car and my scooter (which is injected, no carb.) Any ideas on how to work on it would be appreciated.
    Here's a photo of someone else on one... found online.
    Last edited: Sep 2, 2008
  4. wkk427

    wkk427 New Member

    kamasura vrx 250

    i have one exactly like this one. i need a set of wrings for the engine does anyone know where i can get a set
  5. Hajuu

    Hajuu Member

    You're hot :p
  6. motorpsycho

    motorpsycho Active Member

    if the carb is leaking gas...is it leaking from the carb itself or from the fuel line?
    the fuel line could be dry rotted and leaking.
    if the carb itself is leaking, the float may be stuck from sitting.
    I am assuming that you have already drained out any old gas and replaced it with fresh gas /2 stroke oil.
    replace the fuel line(s) and tap the side of the carb on the float bowl with a plastic handled screwdriver.
    That might free up the float if it's stuck.
    if not, you might want to ull the carb off, tanle the float bowl off and see what it looks like in there. there may be gunk built up from old gas being in there, and everything may be gummed up.
    the carblooks fairly easy to get to and maybe you can just pull the float bowl off with out pulling the whole carb off. get yourself a can of gum out carb cleaner, and clean up any old gunk that you see in the carb. in some cases you will have to pull the carb apart and clean the entire thing.
    My suspicion is that this motor sat for a long time, with old gas in it, and the carb is gummed up inside, and/or the fuel line is rotted and leaking. i can almost gurantee that the float is stuck down, which will never allow the needle & seat to close, which will cause the carb to flood over.
    once you get the spark plug wire replaced check for spark.
  7. wkk427

    wkk427 New Member

    kamasura 250 vrx

    does anyone know where i can get parts for this engine i need a set of gaskets and rings