Originally posted by: nyroc
Moto, the black spring reduces belt wear, but pretty much wont stop it from squeaking. A squawking belt means it is loose. Make sure it gets tightened soon. Loose belts wear out fast, sometimes as fast as 350 miles.

Mine starts easy. All 650's need throttle to start, it is a characteristic of the compression release. BUT, mine starts and runs solid in real cold weather. You may find a quad that runs as good, but none better. The 650 doesn't have to run like crap. It just comes tuned that way for emissions reasons. Yours is probably tuned too lean. Some people get the dynojet kit and just use the needles, and others adjust the stock needles with small spacers (washers). Get those air screws set to 2-3/4 in the front and 3 in the rear.

Um, yeah, you are nit picking about the paint on the exhaust. Stop that.

Keep the fuel switch off, you won't get any gas in the oil. Actually, if the tank is never left low, it won't do that either.