Low power Hi Everyone, My son has a Razor MX 650. We replaced the module and it ran fine for a while but now it can not handle a load at all. The throttle is working. The batteries have never been replaced. Please give me some insight. I know that sometimes the throttle assembly is replaced when the module is replaced, I would prefer to just replace the batteries since I know they are older. Can I assume that since the throttle does work when the wheel is elevated that the throttle assembly is fine?

sounds Ike Razor Dirt Quad Electrical Kit (Throttle & Control Module) part number 119-166 is bad about $45 Amazon

Question edited for clarity.
Question moved from Cars and Trucks.

Get out your multimeter and check the TOTAL voltage. You should have 24 volts or 36 volts depending on model. If you don't, take them all of and charge each one on a car charger set at 2 amps. Clean all the battery connectors with a wire brush and also the connectors. Smear them with Vaseline. Also make sure you have the batteries wired in correctly. If don incorrectly, you may be running on 12 volts!

https://www.google.com/search?q=razor+quad+low+power

Batteries x 2 or x 3

https://www.google.com/search?q=razor+quad+batteries

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Question edited for clarity.

There are some ideas here. If they don't work, contact Razor Support.

https://www.google.com/search?q=mx+500+razor+solenoid

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My thanks to everyone who viewed my question. I feel so embarrassed now since I lo0cated the answer accidentally on my own. Here is the answer: When I opened the "trimmer" on the razor itself, lo and behold the answer was already there. It gave the exact answers I had been seeking. It said "For the HGX-1, it requires a PA-650 which delivers 12vdc @ 650mA. I found a compatible charging power transformer which delivers 12vdc @ 500mA and it worked fine in recharging my shaver. So, thanks to each of you for trying to locate the answer for me.

Did you ever find out what the problem was?

WOW!!!WHAT A JOKE!MY KID SAVED $470 AND PURCHASED HIS MX 650 ONLY TO HAVE THE REAR FREEWHEEL BREAK THE FIRST WEEK RIDING IT.NND BY SEEING ALOT OF THE SAME PROBLEMWITH EVERYONE ELSE.RAZOR SHOULD' VE AT LEAST PUT A HEAVYDUTY ONE IN IT.OK PEOPLE LETS FIGURE IT OUT IF ANY ONE KNOWS AGOOD BEARING COMPANY,POST IT.MY KIDS BUMMED HE CANT RIDE IT

you could try charging it if this dont work you will have to replace it

the back wheel won't move it try to move but it won't it's making a loud noise.every time you give it gas.what could that be...

i had the same problem but fixed it this morning, i just sat far back on the seat when turning throtle with all my weight and then slid back on normal when moving, but it makes a grinding noise.

Have you checked that you have power to the coil on cranking?You may also want to check wether you have a good strong spark at the spark plug.It could be an ignition module breaking down.If you have no power to the coil you may need to change the ignition relay.Its close to the battery.