<!-- from fixya rte -->Raptor 350 wont idle without choke on - Yamaha 2005 Raptor 350

Carburetor could need cleaning and check air filter make sure its tight

Sounds like the bands are broken between the gears and it needs a rebuild. The bands or rings hold the gears in location so that when you shift the teeth will line up

counter clock wise. but thats just the idle, for every thing else you need to lift the main needle.

you can but it'd be better to fix the starter

is the neutral light coming on? it wont start with the switch unless it is.

Hey Darrell,
This "broken" wire is a little more serious that just being broken, if one ever grounded to the frame or other wires it can cause serious issues with the CDI. Please take this to a professional. No, it wont be cheap.. sorry.

Main jet dirty. Likely Ethanol fuel fouling. Remove and clean jet. Check all rubber tubing to/from carb for cracks/deterioration and replace.

Replace the idle jet (don't clean) with a new one from a Yamaha OEM only $5.00 & make sure the idle mixture adjustment on the bottom of the carb. is set 3 1/2 turns out from seated in (a brass screw ---Don't over tighten & break off the needle tip). Also , be sure the choke is all the way off or it won't idle either.

check the main fuse

its probably the same. check yamaha for a model number. usually something like YFM 350 and search for that service manual.