Question about Razor MX500 Dirt Rocket

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My razor mx500 is not starting the motor works and battery is charged it just doesnt start up when i turn the throttle

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Look hard for loose wires. Start with the on off switch. Make sure all are plugged up. The fuse should be accessible without taking things apart. Water is a major enemy of the solid state box the wires go into before they go to the battery.

Posted on Aug 23, 2010

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Posted on Jan 02, 2017

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1 Answer

It will not run it just click


Most likely, the last 2 answers are correct. When you charge the battery, does the light on the charger stay red for several hours before turning green? Check the voltage of the 3 batteries after the charger light turns green. It should be 39-40 volts or so no load. Turn the throttle and see if the voltage drops when the relay clicks. You can connect the batteries directly to the motor and it should go full speed if they are good.

Mar 02, 2015 | Razor MX500 Dirt Rocket

1 Answer

I Replaced the charger port on my Razor Mx500 Dirt Rocket and it ran fine and then just stop. The charger still indicates the batteries are charge but no power. Also I went to check the fuses and manu


Well if it's missing fuses obviously it won't run. When you turn it on does the green light on the throttle come on? if you have a voltmeter that would help. Are you sure the charger is good? if so you want to see 39 volts or so across all 3 batteries. Sometimes the switch contacts develop excessive resistance try shorting them with your screwdriver... if it runs you need a switch. can you hear the controller click when you turn the throttle?

May 21, 2014 | Razor MX500 Dirt Rocket

1 Answer

How can i test electrical compontents on the mx500 dirt bike? i bought it used. it will not run the lights on the the throttle light up that the battery is full but when i twist the throttle nothing...


If the lights on a the throttle are showing a full battery then try disconnecting the brake switches at the controller one at a time. If the bike works after disconnecting a brake switch then that switch is faulty and should be replaced.
There is some excellent information on trouble shooting and testing components here http://www.razorama.com/razor-installation-guides.html
also wiring diagrams here http://manuals.monsterscooterparts.com/recreational/Razor/Wiring/

Oct 07, 2013 | Razor MX500 Dirt Rocket

1 Answer

Batteries are charged and the bike doesnt work any ideas on what it might be and batteries are new


yes! if that's the case ,the motor is the culprit.there are 4 things that make our bike run..the a good charger, batteries, the throttle, and the motor. now that you singled out your battery and charger ,you have the throttle and your motor..1st check your throttle & make sure it stops @ a1/4 twist.check all connections, then do an extencive check of your motor for moisture or water/signs of it being wet/riding in the rain..which is a big No-No../no rain No snow, No drizzle,and no puddles clean or muddy..it is not a gas bike....remember!great tip!

Dec 20, 2012 | Razor MX500 Dirt Rocket

1 Answer

Why is my Razor motorcycle MX350 battery showing green but not charging


yes!your battery needs replacement.....throttle clicking after a full charge is a sign,...but that's after 2years or more,depending on how it's being used..your motor can go bad before then if you been riding in the rain--wet connectors in or out the motor can not get wet for any reason..a full dirt motor bike can not get full dirty with mud..mud catains water/water and electricity don't mix/////.motor/thottle/moisture.

Dec 17, 2012 | Razor MX500 Dirt Rocket

1 Answer

RAZOR 500 BATTERY CHARGE MOTOR DON'T START OR EVEN CLICK DON'T WANT TO SPEND LOTS OF MONEY HOW CAN I CHECK THE MOTOR


Get a automotive battery charger that has 10 amps and hook it up to the motor. If the motor spins the motor is good. Just had to do this myself. Thought the motor was bad on ours and tested it found out it was good. Good Luck!

Jun 03, 2012 | Razor MX500 Dirt Rocket

1 Answer

My razor mx 500 motor won't turn.


I think you are talking about an electric motor on your bike . If the motor is New you may have a bad throttle switch . You can use an ohm meter to check the throttle switch . Connect the two leads of the ohm meter to the wires of the throttle switch ( dissconected) . As you turn the throttle the ohm reading should coraspond to how much you turn it .

Jan 15, 2018 | Razor MX500 Dirt Rocket

1 Answer

The MX500 wont start. The light says the battery is charged but when I twist the throttle all I hear is a clicking noise. Is it possibly the fuse?


Although you alternator may be charging, the battery may not be accepting the charge or holding it. Have the battery tested under load, but I think that you are going to find you will need to replace it.

May 09, 2011 | Razor MX500 Dirt Rocket

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