Question about Transport Schwinn Rechargeable Portable Scooter

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I have a 50 cc scooter it keeps cutting out on me

I have to some times hold the brake on to keep it running but it cut out 15 times on me last night when you swith the ignintion on some times the fuel gage will work other times it wont please help

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  • billyhulluk Mar 16, 2009

    my jinlun qt50 starts up, runs for a about 30 seconds, cuts out as if no fuel, then it comes through and runs again for about another 30 to 45 seconds but sluggishly, runs out of fuel (empty firing on electric start) then starts again and runs slowly but builds up to near ok until its left again for a period of time. changed the fuel filter only so far. anyone figure out what it could be as i dont have a clue and dont want to try strip it without first having some idea please

  • SLP101 Apr 01, 2009

    I have exactly the same problem - it has only started happening in the last week but is identical. Can anyone help!!!

  • jennuhn
    jennuhn Jul 18, 2012

    replace cdi and coil



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Check the vacuum line that connects to the petcock valve. It's possible that there is not enough vacuum to open the valve and provide fuel flow. The petcock valve is a rubber diaphragm that opens a valve in the presence of suction. You can test the valve by sucking on the tube and seeing if fuel flows from the other tube. If not you may have a bad valve. If the valve works then you may have a clogged float valve. Sometime debris clogs the float valve and the only fuel you have to run on is what's in the bowl. Once the bowl is empty the engine dies and the bowl is refilling too slowly to sustain the engine.

Posted on Sep 11, 2009

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Check the connections and wires under the front headlight few are probably loose or too tight since they don't work all of the time.

Posted on Jan 14, 2009

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Hi i have a superbyke m-ped 50cc qmb139 an ive had the same problem ive done everthing to try fix includeing changeing carb then today a freind suggested checking my valves my exsaust valve was too tight so i put it at the right gap an now it runs great doing 40mph no probs on flat so try your valve gaps

Posted on Nov 07, 2009

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I need a diagrame of the placement of the fuel lines on the pecock can anyone help

Posted on Jan 30, 2010

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