I have a 1998 yamaha warrior 350 that will sit and idol. But as soon as you give it gas it bogs down. what could be wrong with it?

this definetly seems like your float adjustment needs checking/resetting.

Check spark plug, that sounds like it's running little too lean.

First.. check the compression..>120PSI...
Why did you replace the carb..???? that was unnecessary.. carburetors don't "just go bad"..
Stop playing mechanic.. take this ATV to a QUALIFIED professional!!

hello, you probably need to have your stator checked out, sometimes the pickup coil in the stator will go out, also you can try ign coil, the one spark plug wire is hooked to,warriors are bad about cdi going out, mine would idle, would not rev up, would bog down, source coil in stator probably needs to be checked also..

Clean the cab, the pilot jet is not allowing enough fuel through so when you turn the choke off there is too much air and not enough fuel in the fuel mixture causing it to die.

I had a problem somewhat the same.

Make sure the air-intake boot has no holes in it.

Try checking the switch for your parking brake. It is the top wire in the clutch handle boot. This wire connects to your CDI box, and restricts the RPM's while the parking brake is engauged. To find out for sure, trace the wire down to the plug under the headlight assembly and disconnect it. Now try starting you machine and give it some throttle!

check the parking brake on the handle bars. un hook all of the wiring and see if it runs better. this is a common problem.

Have you changed the spark plugs? If your plugs aren't firing correctly, this can cause the problem. If you have dirty carbs, this can also cause the problem as you will put too much air in and not enough gas.

sounds like fuel starvation
do you have a petcock plugging or a dirty carb?
pull the fuel line and check flow
later paul