Razor Cycling - Recent Questions, Troubleshooting & Support


The problem is witht he flywheel on the rear wheel assembly. I had mine fixed by a professional last night (at a bike store). Razor uses a very cheap spring that is designed to fail and then to top that off did not use enough bearings as well (12 bearings short out of the factory). My son had also sprayed WD-40 all around the back axle (trying to make it faster). This is bad because, the bearings are packed in grease and WD-40 is a de-greaser. Never get WD-40 anywhere near your back axle!!! Anyway, the flywheel was way easier to remove than I thought. It is threaded onto the rim's axle shaft and just screws off. Once you get the flywheel, off you have to take it apart, fabricate a new spring (my son's new spring came from an old 10 speed's tensioning spring), reset the 3 pawls, repack the bearings, put the flywheel back together, and screw it back onto the wheel. I will post a YouTube video on this later. Hopefully this is enough info to get you started.

Razor MX500 Dirt... | Answered on Mar 15, 2020


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/.

Razor MX350 DIRT... | Answered on Feb 16, 2020


How do I charge a Razer zr350 dirt bike without a charger

Razor MX350 DIRT... | Answered on Dec 22, 2019


The cable may need to be adjusted, or the carburetor needs to be adjusted.

Razor MX500 Dirt... | Answered on Nov 24, 2019


Thoughts -
No/poor connection between power source and motor
Motor failure
Only someone with their hands on the bike can fully diagnose.

Razor Cycling | Answered on Jun 29, 2019


Hi,
You'll need to remove the keyswitch itself & either take it to a locksmith to have a replacement cut from the barrel
or
replace the entire keyswitch with a compatible replacement unit.!

Razor Cycling | Answered on Mar 30, 2019


Either the cheap lead acid batteries are near dead (mostly due to improper maintainance (lead batteries are way too much trouble and lithium should be considered!)
There could be a loose or corroded connection - check on all your wiring, especially the ones to the motor.
Also where it goes into the motor is fragile and people bump that area and it rips the wire, there is a steel spring that surroiunds the wire/s and this sometimes shorts out because of the damaged cause from laying the bike on it's side. check these wires over and tug on the connector wires to find the weak connection. Also verify that your charger turns red indicating it is charging when attempting to charge the bike, if it stays green chances are a dead battery or BMS controller inside battery (Lithium only!)\
Most repairs are very simple if you take the time to check out the connectors and wiring, especially if you use it in bad weather, things get corroded from being wet and power shorts out then corrodes the wires and connectors.
Good to insulate them for the rain etc...
Think Im on the right track here, and i have many ebike because people dont know how to fix simple issues with a tester.

Razor MX500 Dirt... | Answered on Mar 24, 2019


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 .

Razor MX500 Dirt... | Answered on Nov 09, 2018


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 MX350 DIRT... | Answered on Jan 21, 2018


this is a little complicated.
1-check fuel line and filter make sure you have a good gas flow.
2-check you'r hose's for leaks 3- OPTIONAL -check you'r engine for
compression.you can buy a pressure gauge at auto zone
buy the one that screws into the piston hole it makes it
easy for you.
REMINDER!! IF CHECKING THE FUEL LINE AND IF IT RUNS BETTER OR BY CHECKING THE HOSE'S AND IF IT RUNS BETTER (THEN YOU WON'T HAVE TO CHECK ENGINE
CHECKUP THIS OPTIONAL.) SAFETY FIRST GOOD LUCK.

D,R,CLAUDIO

Razor MX500 Dirt... | Answered on Jan 21, 2018


BEST SOLUTION GO TO A GOODWILL MOST OF THE TIME THEY HAVE-
BIKES FROM $10.00 TO $40.00 AND YOU LOOK FOR A BIKE
THAT HAS A GOOD BACK WHEEL AND YOU'LL HAVE EXTRA
PARTS HERE IS A LIST OF PLACES GOODWILL&THRIFT STORE&
SWOPMEET THAT HOW I FIX MY BIKES..
HAPPY HUNTING.
D,R,CLAUDIO

Razor MX500 Dirt... | Answered on Jan 20, 2018

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