Mx500 break adjustment - Razor MX500 Dirt Rocket

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

rpm to high in gear stop that your going to break it

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

Make sure the on / off switch is on. If still no start check for good fuel and spark. If fuel was allowed to sit carb could be gummed up.

Is there a chain adjustment on this bike? It must be very loose to slip over the sprocket. See if there are two bolts that act as jacks to move the rear wheel back away from the drive sprocket. Loosen the locking nuts on each bolt, and tighten both equally until there is only 1/2 inch of play in the middle of the chain, then repost.
Gary

is the acid leeking out of the battery anywere

I have a NV-MX500 and I need to connect to a PC to play do i need to capture video in windows movies maker

Most likely half done, but if not it still should be very simple(razor!)...

Good Luck

I can do it for you because I had to change my rear tire as well and I have done it before and I will do it for you free of charge but I live in Bronx, New York and I have no idea where you live LoL... If anything my E Mail is [email protected]

Have you checked for a frozen bearing