Question about Razor MX350 DIRT ROCKET - BLUE

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Have a Razor MX 350 little older model 2008 sat for awhile. Charged battery went well lift rear end tire spins really fast but when my son sits on it it starts to move then cuts off like if theres an overload he weighs 85 pds so way below weight limit ??? any ideas i only see throttle , control mod and motor i think it might be the motor when load is place but dont know check all connects and looks good its been garaged so nothing damaged by weather .. HELP ??? THANKS

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I agree with bmb_az.
Batteries may seem OK simply by measuring the voltage or by the charger indicating they are charged BUT you need to put a load on the batteries and monitor the voltage to confirm if they are OK. If the voltage drops under load then it is most likely the batteries have very little capacity left and need replacing. You can take them into a battery shop and have them load tested, most places do this for free.
A drop in voltage under load can also be caused by a bad connection between the cells, fuse or switch.

Posted on Oct 24, 2013

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I'm having the same issue.. I checked my battery..seems fine.. my daughter weighs when I twist the throttle down barely..I hear almost an air like sound coming from the motor its very odd to me.. all connections look new.. sat in my attic over the winter..ran fine before..the bike is ideas why it won't go.

Posted on Sep 24, 2011

  • bmb_az Sep 25, 2011

    batteries where the issue even if they show charged


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Did you ever find out what the problem was?

Posted on Feb 06, 2011

  • bmb_az Sep 25, 2011

    batteries where bad even if they should fully charged


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Jumped the battery after car sat for awhile then

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