20 Most Recent Razor MX500 Dirt Rocket - Page 3 Questions & Answers

What??? RLtoFixYa doesn't know what they are talking about. Your problem is a faulty/broke "one way roller clutch" which is threaded onto the rear wheel. I've already replaced 2 on my son's MX500.....

Does the clicking rate vary with wheel speed? Check the chain tensioner and the freewheel. If your freewheel only has 4 notches in it for the removal tool, it's an older one. They can get noisy before they go bad. If it has 8 notches it's a newer one, they beefed it up. Take the chain off the motor sprocket and turn the shaft. If it makes noise and wont turn smoothly, your motors bad. Check the chain for stiff links, and look for any broken plastic parts or loose bolts or screws. Check the nut on the shock and tighten that if it's loose.

8 hours with the included 1500mA charger.

Thats the controller relay clicking....if it won't move disconnect the brake switch connectors from the controller and try again. Make sure the batteries are fully charged and in good condition. There should be at least 12.6v or more on each of them with no load. The green light on the throttle should be on when you turn the switch on. If it goes to yellow and/or red when you give it throttle, your batteries are probably weak. Then connect the battery wires directly to the motor and see if it works. If the motor operates and it wont go you need a freewheel. If none of this helps try shorting the power switch wires with your screwdriver or a piece of wire. Sometimes the contacts have too much resistance.

Run time depends on a few things, including the weight of the rider, the terrain being riden over and the condition of the bike.For example, a light rider riding on flat hard packed dirt or paved road with a bike that is in good mechanical condition - tires inflated to correct pressure, chain correctly adjusted/lubed, brakes adjusted, etc. - will have a longer run time than a heavier rider on soft undulating dirt with a bike that has not been maintained. Generally you should be able get 40-45 minutes out of a new battery. Check out the trouble shooting guide and user manual if you are getting less than half and hour.http://www.razorama.com/ownersmanuals.html

Throttle tube has either become damaged (hidden by the grip) or has been pushed inwards when you fell. Loosen housing bolts on the clamp and slide the whole thing a few mm's outwards..prob just the grip fouling on the end of the bars.

Some chargers have 2 LEDs (lights), some have one. Both chargers have an LED that is red (or orange) when the charger is charging a battery and turns green when the battery is charged and the charger has dropped back to trickle charge mode or off.On the charger with two LEDs , the extra LED is normally red to indicate the mains power is connected.

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.htmlalso wiring diagrams here http://manuals.monsterscooterparts.com/recreational/Razor/Wiring/

i would start with the carb.check to see if you have blocked jets

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.

Are the batteries really gettin a full charge or is your charger faulty. If you can borrow a voltage meter you can see what your battery is putting out and check the charger (plugged in) to test how much voltage it is putting out. If the Razor is 12 volt you can hook up a car/motorcycle charger to pump up those batteries. I don't think your batts are not holding a charge, i think they're not gettin a charge....good luck to you...Tim

remember the motor transfer the power to the front..there no weight on the motor when you take it off..the motor can be going bad/a singnal! most people change the battery without checking the motor for wear..

easy razoroma.com has all the replacement parts u need to get you back in the dirt...

Did you ever solve this problem? Having the same issue

yes .stop playing with the connectors...but that do tell urself that is a future problem