2007-2011 Polaris IQ Snowmobiles Service Manual, Page 164Get this manual
Fuel Systems Throttle Opening and Fuel Flow
The illustration below depicts how each fuel metering circuit effects the total fuel flow of the carburetor as well as the fuel flow characteristics when the jet needle e-clip is moved from position to position 4This illustration can be helpful when trying to diagnose fuel-related problem when the throttle opening at which the rich or lean condition occurs is determinedFor example, changing main jets to resolve an off-idle hesitation or rich condition would do nothing as the main jet's effect on total fuel output is minimal at idle speeds