2007-2011 Polaris IQ Snowmobiles Service Manual, Page 197Get this manual
Fuel Systems After replacing the injectors, the ECU must be re-flashed so the fuel calibration map matches the new color coded fuel injectors4If replacing lower injector, remove the two bottom screws bolts from the lower fuel rail5Remove the failed injector(s)NOTE: Make sure that the green bushing comes out with the injectorIf it does not, look inside the injector boreBLUE OR BLACK O-RING
CAUTION
ALWAYS CHECK THE INJECTOR PART NUMBER TO VERIFY ENGINE APPLICATION REGARDLESS OF COLOR CODENEVER RUN THE ENGINE WITH DIFFERENT COLORCODED FUEL INJECTORSSEVERE ENGINE DAMAGE WILL OCCURALWAYS VERIFY THE ECU CALIBRATION FILE MATCHES THE FUEL INJECTOR COLOR CODE