2006-2008 Polaris Snowmobiles FS/FST Service Manual., Page 25Get this manual
Model Specifications Table 1-84: Electrical Alternator Output Operating Voltage Watts 13.5 Vdc (Total) Watts 13.5 Vdc (After EMS) Amps 13.5 Vdc (No Load) Ignition Timing Spark Plug Gap inmm) Spark Plug OE Equivalent 13.514.5 Vdc 780 630 60 Variable .030 (.75) Champion RC7PYC 04513967 Champion RC7PYCBX 3021837 Table 1-85: Track WidthInches (cm) LengthInches (cm) Lug HeightInches (cm) Track tension sag incm with 10 lbs4.54kg placed 16 in 40cm ahead of rear idler shaft 15 (38) 144 (365.7) 1.25 (3.175) 3812 (11.3cm) Table 1-87: Rear Suspension Suspension Type Front Track Shock (FTS) FTS Spring Rate lbsin (Nmm) FTS Spring Installed Length in (cm) Rear Track Shock (RTS) Rear Travel in (cm) Torsion Springs IQ Switchback 144 Fox HPG wIFP (Rebuildable) 170 (30) 7.25 (18.4) Fox HPG wIFPCompression Adjustable (Rebuildable) 16.5 (41.9) .359 Square77