2007-2008 Polaris IQ Snowmobiles Service Manual, Page 92Get this manual
Fuel Systems Assembly
1234Install the main jet (20), pilot jet (21), and starter jet (22)Install floatneedleseat assembly (19)Place carburetor in an inverted positionConnect pressure tester (PN 2870975) to fuel inlet fittingApply psi pressure and observe for one minuteThe needle and seat should hold pressure indefinitelyIf the pressure drops, carefully inspect the needle and the needle seatThe needle can be replaced (needle supplied with float and seat)