Question about Razor MX350 DIRT ROCKET - BLUE

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MX350 Battery fully charged but won't run over 2mph

I have an older electric Razor MX350 dirtbike (101520-04-05090035507). It has sat for about 1 year and I have purchased a new battery. It then ran fine but over a short time always seems like it has a dead battery. Symptoms: 1. When I first attach the charger, it quickly goes to green. 2. When my 42 lb boy rides, the yellow light on the throttle comes on and it goes about 2mph for 50 ft. 3. When I take off the battery covers and measure voltage at the back of the connector with the red and black larger gage wires (maybe 10 gage or so), I read about 25 volts. So, I thought geeze, the battery isn't dead, the power just isn't getting through the controller. So.... 4. With the power turned on, I put my meter to the blue and brown wires out of the controller and throttled up while holding the bike still. I read a max of about 4 volts, but it quickly goes to 0 at about 3/4 throttle. The yellow light for low power remains on if giving throttle while loading the bike by not letting it roll. Do you think it may be: 1. controller 2. bad throttle 3. bad power switch 4. bad motor or something else.... Thanks, Joe

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Posted on Jan 02, 2017

bozcro
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SOURCE: my razor mx350 battery charger blinks green when

green should mean charge is complete

Posted on Aug 15, 2009

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SOURCE: how do i change the rear tier of my razor mx350?

I would take it to a shop only because the tire has to be on almost perfect so there is no wobble.They have the proper equipment to make sure it is aligned properly.If you are going to go around 40-50 mph alignment is critical.Even jumping moguls and turning alignment is critical.

Posted on Jul 22, 2010

erickedubbs
  • 15 Answers

SOURCE: Indicator light fully charged...but barely enough power to move

i have the same exact problem on 1 of my sons MX5s..i checked all 3 batteries and all that! you left out the controller clicks when the back wheels sapose to be moving ,it's not....so worse case scenerio batt,controller,motor,(650 This time)& throttle....So theres our blue print...lets hope it's just the batteries....!

Posted on Apr 13, 2013

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