2007–2008 Polaris 600 HO, 700 HO, and 800 Dragon Snowmobile Factory Service Manual (P/N 9921044)

This Polaris factory publication (P/N 9921044, 2007 edition) covers service and repair of 2007–2008 IQ-series Liberty liquid-cooled 2-stroke snowmobiles. The 325-page PDF contains 12 chapters, with mechanical, electrical, and suspension specifications and model-specific data for 47 base model codes.

• Engine repair procedures cover removal, teardown, and reassembly, including crankshaft indexing, truing, and dedicated 800 CFI monoblock service.
• Mikuni TM38 carburetor overhaul includes float-system testing and synchronization, supported by temperature- and altitude-based jetting charts.
• CFI fuel-system procedures cover pressure testing, fuel-pump and injector service, TPS baseline adjustment, and throttle-plate synchronization.
• PVT repair covers drive-clutch and Team LWT driven-clutch rebuilding, spider indexing, alignment, and belt-deflection adjustment.
• Final-drive work covers chaincase rebuilding, HYVO gearing, and driveshaft replacement. Brake procedures address bleeding, master-cylinder service, and pad and disc replacement.
• Steering alignment and rear-skid removal are covered alongside IQ and M-10 suspension setup and serviceable-shock rebuilding.

Model and Fuel-System Coverage

The 2007 model tables cover 600 HO IQ, Switchback, RMK, IQ LX, and IQ Touring configurations, plus 700 HO IQ Dragon and RMK Dragon models. For 2008, coverage includes IQ Shift, RMK Shift, 600/700 IQ and Dragon configurations, Switchback, RMK, IQ LX, and IQ Touring.

Carbureted coverage is limited to the 600 models; Cleanfire fuel injection (CFI) coverage addresses the battery-less, four-injector system used on the listed 600, 700, and 800 models. The 800 section specifically covers 2008 Dragon RMK 155 and 163 configurations.

Engine Repair and Build Differences

The engine sections cover VES exhaust-valve service, water/oil-pump assemblies, lubrication-system bleeding, and cooling-system service. The specification tables document piston-to-cylinder clearances, ring gaps, inspection limits, and model-specific engine and clutch torques.

For 2008 600/700 CFI models, oil-pump instructions distinguish carryover pumps from revised pointer-style units. Using the wrong pump-arm adjustment can cause severe engine damage. CFI injector color codes must also match the ECU calibration; mixing injector codes can damage the engine.

The cooling section distinguishes the 800's bypass and no-bypass thermostat applications, with model-specific layouts such as 2008 800 CFI RMK 163 (No Bypass) Cooling System.

Electrical Diagnostics and Wiring

For electrical troubleshooting, the manual provides ECU pinouts, diagnostic trouble codes (DTCs), and MFD blink-code tables. Stator, ignition-coil, and sensor tests accompany separate carbureted and CFI ignition-timing procedures. PERC electronic-reverse coverage explains their different altitude-setting arrangements.

The 34 Pin CNA ECU Connector and 26 Pin CNB ECU Connector views identify circuit functions and pin locations. Year- and system-specific wiring diagrams include the 2008 IQ CFI Engine Harness, with separate chassis and hood-harness drawings elsewhere in the chapter.

Digital Wrench coverage includes guided diagnostics, live data, and ECU reprogramming. The documented reflash workflow requires dealer authorization and the specified software and interface hardware. Tool references include TPS test tool 2201519 and fuel-pressure/bleed gauge PV-43506-A.

Clutches, Steering, and Suspension Setup

Factory clutch configurations identify springs, weights, and helixes. The Belt Wear / Burn Diagnostics chart links wear symptoms to causes and corrective checks. The IQ Rider Select Steering Post Assembly view distinguishes adjustable steering hardware from the fixed-post arrangement. Chassis sections also cover RMK tunnel and Touring seat assemblies, plus seat-cover replacement.

Rear-suspension coverage separates IQ 121/RMK layouts, M-10 128/136, and IQ 136 Coupled/Comfort systems. The 600 IQ Touring changes from M-10 136 in 2007 to IQ 136 Comfort in 2008. Adjustment material includes M-10 Full Range Adjuster (FRA) setup, scissor stops, limiter straps, and ride height.

Shock Service and Coverage Limits

Walker Evans air and remote-reservoir/piggyback shocks receive rebuild coverage. Ryde FX procedures address Air 2.0, remote-reservoir, and mono-tube designs. Shock tables specify valve-shim stacks, internal floating piston depths, oil volumes, and nitrogen charge pressures.

Shock-section limits: The 2008 Ryde FX 7043315 and 7043316 shim-stack entries are marked TBA. Fox PS-5 coverage includes disassembly and seal work, but its assembly section stops before a complete reassembly sequence.

Maintenance tables clearly outline intervals for track tensioning, drive chain adjustments, and critical fluid services. Always verify system depressurization and wear proper protective gear before opening fuel or coolant lines or servicing gas-charged shocks.