How do you set the timing on a yamaha warrior 350 atv

Hello, get piston up on tdc, hold finger on spark plug hole turn engine untill finger blows off,that should be compression stroke. take screwdriver in hole make sure piston is all the way up, take timing cover off top gear, there is a v mark inside the motor , make sure gear marks and timing chain is all aligned upp, timing chaing should have a different colored link, aligned this with mark on gear-chain and the mark on the motor, it looks like a v or a point, you have to remone the top gear cover to see this, once they are all aligned it should be in time, piston has to be up all the way on compression stroke, really its pretty simple....

I have 2002 Yamaha warrior that we just bought the person i bought the quad off of had the engine apart to change the head gasket. it will start but as soon as the throttle is pushed it shuts off or bogs out it will ideal fine and it doesn't appear that the time marks are lined up right how do i fix this? and what is the problem?