Hey, I had just got my motor back from the shop today and installed it into the quad... hooked everything up by the book, and the quad started right up perfectly fine.. but it wont hold idle... how do i adjust the carb to make it idle higher.. also only one headlight works do i need to change the other bulb? Its a 2000 400ex

 

its been a while since ive adjusted my carb but without going out to look i believe theres only one adjustment screw on it so trun it left to turn the idle up and right to go down... as far as the headlight. before you go out and buy a bulb just check the wireing. honda did a good job conceiling everything but who knows if u dont see any problems then go out and get a bulb