2007-2011 Polaris IQ Snowmobiles Service Manual, Page 79Get this manual
Model Specifications Electrical Alternator Output Operating Voltage Watts 13.5 Vdc (Total) Ignition Timing Spark Plug Gap inmm) Spark Plug Track WidthInches (cm) LengthInches (cm) Lug HeightInches (cm) Track tension sag incm with 10 lbs4.54kg placed 16 in40cm ahead of rear idler shaft 20 (50.8) 156 (396.24) 1.25 (3.175) 12 (1.27cm) Rear Travel Inches (cm) Suspension Type 13.514.5 Vdc 400 18_ 1700 RPM Coolant Temp120_F (49_C) .027 (.70) NGK BPR9ES Front Track Shock (FTS) FTS Spring Rate lbsin (Nmm) FTS Spring Installed Length Inches (cm) Rear Track Shock (RTS) Torsion Springs Rear Suspension IQ 156 Widetrak Ryde FX HPG w IFP 170 (29.75) 7.25 (18.4) Ryde FX HPG wIFP .421 Square18# (Stock)PN 7042282067PN 7042283067 11 (28)