Top 20 Razor MX350 DIRT ROCKET - BLUE Questions & Answers

Question edited for a lot more clarity. Question moved from 'Power Computers' to model category. Did you just remove the lead acid AGM batteries and replace with Lithium Ion? There is a lot more to it that that, you have to replace the controller as well and for safety you need a LiFePO battery and a new twistgrip because the old one is little more than an On / Off switch.. Motor Controller Kit 24v LiFePO4 Battery Lights and Horn Kit https://www.ebay.com/itm/222627137235

are the chain and sprockets worn out?

DOES THE BIKE HAVE A FUSE CONNECTION BEFORE THE CONTROLLER? IF IT DOES THEN I WOULD LOOK FOR THE FUSE LINE AND IF IT DON'T THEN I AGREE WITH YOU'R ASSUMPTION.IF AND WHEN YOU DECIDE TO FIX IT,I WOULD CONSIDER A FUSE I'LL BE LESS $$$. D,R,CLAUDIO

Razor E300 chain adjustment fix

Loosen both rear axle nuts, pull wheel back but keep it straight in the frame. retighten bolts

What model? razor was purchased by Polaris. Contact Polaris dealer for assistance

I think you can a new dirt bike charger easily on Amazon or on the razor website. Be aware of how you use the battery though, it is the same idea for a lot of mobility equipment (electric scooters, electric wheelchairs, electric bikes, and etc...). You need to use the battery PROPERLY. For example, charge them from time to time, don't leave them there for a long period of time just because you don't need to ride out your electric dirt bike. Your battery's longevity will get hurt. Also, protect it from water and dust. I learn a lot more about outdoor sports equipment on this site: https://mobilityseeker.com/.

A green light means the battery is charged.

Have you tried removing plastic chain guard and making sure chain is not off track i had this problem and that is all it was.

This could be a few things: 1) Your clutch plates may have worn out so that even when the bike is in gear, it will just rev, but no power will be transmitted to the drive shaft (smaller front chain sprocket is the driving gear, larger rear sprocket on the back wheel is the driven gear) 2) The front chain drive sprocket has come off under the cover on the motor - if the chain is really slack, have a look. 3) The front chain drive sprocket SHAFT has sheared. (basically, meaning that the shaft has broken into two parts as it couldn't handle the drive power (torque) being delivered through it to the chain drive) With the motor on, listen for grinding noises internally when you rev, from the vicinity of the front chain drive cover. If its rough and grindy, the shaft may be sheared. Then with the motor off, take the cover off and leverage the small chain drive sprocket away from the motor with a screwdriver, and see if the shaft can just be pulled out of its sealed opening. Unfortunately with these bikes, the metals used in drive shafts and motors are not always heat-treated or hardened to the standard they should be, so shearing and premature failure can happen. 4) The gearbox or something in it has blown, unfortunately for the same reason above, quality related. Its fair to say that these great little bikes are here for a good time, but not for a long time.

Stripped freewheel or chain off of gear.

You can downloaad the owners manual and the trouble shooting guides from here http://www.razorama.com/razor-owners-manuals.htmlhttp://www.razorama.com/razor-installation-guides.html

There are a few wiring diagrams here for MX350, should be one that matches your version. http://manuals.monsterscooterparts.com/recreational/Razor/Wiring/

The owners manual, installation and the trouble shooting guides can be down loaded from here http://www.razorama.com/razor-installation-guides.htmlhttp://www.razorama.com/razor-owners-manuals.html

MX350 is a 24V bike. You could change the gearing by replacing the sprockets, or you could replace the electric controller and upgrade to 36V, but you probably would be better off getting a bigger model, like the MX500, as this uses 36V already and the higher voltage allows for higher motor rpm.

try disconnecting the brakes

Wiring diagrams are available here http://manuals.monsterscooterparts.com/recreational/Razor/Wiring/

Wiring diagram is available from here http://manuals.monsterscooterparts.com/recreational/Razor/Wiring/ There are a few different versions.

Sounds like the batteries are low in capacity and need replacing. The batteries do not last well if left sitting (hardly used).

the user manual for the Razor MX350 is available on the web.here http://manuals.monsterscooterparts.com/recreational/Razor/ it shows how to remove/install the rear wheel.