Motorcycles, Snowmobiles, Go-Carts, ATV's and Golf Carts - 2002 yamaha big bear won't start

Does anybody know how to troubleshoot this ATV. Engine cranks, plug gets spark and gas but will not start. Only has 200 miles on it.

Compression, ignition and fuel, these are what make the internal combustion engine run. At 200 miles surely there is compression, Remove spark plug, put finger over spark plug hole, crank engine a few times. Feel air trying to escape? then you have compression, if not you are probably in for some expensive repairs. Ignition, you say there is a spark, how hot is it, just barely sparking and you could have a damaged spark plug or bad ignition coil or even the electronic igntion components them selves. You must have a good white spark and that spark must be timed correctly, in that it will happen just before the piston reaches top dead center. Fuel, pull of the fuel hose to the carb and run off some gas into a clear glass container and make sure that there is not any water or trash in the fuel. Also there is the possibility that you may have flooded the combustion chamber with many attempts to start it. Look closely at the spark plug after you have attempted to start it several times. is it wet/oily looking? if so I have found that leaving the plug out over night will allow the gas to evaporate, and enable you to get her started.Check these things and post back your findings.We can help.
STIMPY21

Dont give it any gas when trying to start it, just turn on the choke and start it.Check out your plug first like he said.

If you haven't already done so - replace the plug. I have had numerous Japanese plugs arc across the base and not start my Kawa 300. I also had the same problem with my old Honda.
New plug - starts right up!

fred

I replaced the plug and it started right away. After looking at the spark in the dark i could tell it was weak and intermittent.

Thanks to all.