2006 Arctic Cat Bearcat, Crossfire, Firecat, King Cat, M-Series, Panther, Sabercat, Z, and ZR 2-Stroke Snowmobiles Service Manual (P/N 2257-431)

This 2006 Arctic Cat two-stroke snowmobile service manual, P/N 2257-431, covers the Bearcat, Crossfire, Firecat, King Cat, M-Series, Panther, Sabercat, Z, and ZR families.

PDF Search and Color Wiring Detail

Search, navigation, and labels: Most service text is searchable. Bookmarks lead to the main chapters, carbureted and EFI fuel sections, and wiring appendix. Some engine assembly drawings and the color wiring pages lack searchable text; small wiring labels require zooming.

One printable, English-language PDF contains 741 pages: 691 service pages, including the main contents page, plus 50 color wiring pages already included in the total.

Engine Overhaul, EFI Testing, and Chassis Repair

This selected content preview highlights major workshop sections. Other topics include recoil-starter service and heat-exchanger replacement.

• Engine repair: Step-by-step removal, disassembly, crankshaft-bearing service, piston and cylinder inspection, reassembly, crankcase leak testing, and in-chassis top-end procedures for laydown engines.

• Carburetors and oil injection: Mikuni VM- and TM-style carburetor teardown, rebuilding, and synchronization, plus oil-pump testing, synchronization, and system bleeding.

• Batteryless EFI: Diagnostic codes, fuel-pressure checks, injector and sensor tests, and throttle-position-sensor adjustment procedures.

• APV and ECT: Arctic Power Valve cleaning, seal replacement, cable adjustment, and servomotor testing, plus Exhaust Controlled Timing exhaust-temperature-sensor checks.

• Drivetrain: Drive clutch, standard and ACT roller driven pulleys, clutch alignment, reverse-transmission service, and ACT gear-case disassembly, bearing replacement, and reassembly.

• Brakes and steering: Hydraulic caliper and master-cylinder overhaul and bleeding, Mechanical/Quick-Adjust brake service, steering-linkage repair, and ski alignment.

• Track and shocks: Model-specific skid-frame repair, track tension and alignment, suspension arms and idler wheels, plus IFP, position-sensitive, Fox air, and Fox Zero Pro shock rebuilding and charging.

Suited to mechanics comfortable with engine measurement and electrical testing; EFI diagnosis and rebuildable-shock work require the specified service equipment.

Model and Engine Coverage

Fan-cooled applications include Bearcat 570, Panther 370 r/570, Z 370/370 LX, Z 440 LX, and Z 570/570 LX.

Liquid-cooled coverage includes Firecat 500/600/700, Sabercat 500/600/700 EFI, Crossfire 600/700 EFI, M5 EFI, M6 EFI, M7 carbureted/EFI, King Cat 900 EFI, and ZR 900 EFI.

Application charts distinguish Sno Pro versions, reverse-equipped Firecat r models, Sabercat LX/EXT, and M7 EFI LE. APV and non-APV configurations are addressed separately where applicable.

Wiring-only applications: The appendix also includes F 120, T660, Panther 660, and Bearcat W/T turbo/non-turbo diagrams. These additional diagrams do not add engine-overhaul coverage for those machines.

Repair Access and EFI Diagnostic Equipment

Water-pump repair on the 500/600/700 engines requires engine removal, unlike their in-chassis top-end work. Cooling coverage also addresses the axial fan and belt on 370/440 engines, thermostat inspection, and system draining and refilling.

For EFI diagnosis beyond an active fault code, the manual covers stored intermittent sensor faults and Kokusan Special Mode data, including engine running time, temperature-related RPM history, and fuel-mode history. The stored-fault function helps investigate sensor or connection problems that are absent during a stationary test.

Tool references identify EFI Analyzer 0644-342, update kit 0637-243 for 500/600/700 applications, and TPS Adjustment Tool Kit 3639-891. TPS coverage distinguishes whole-throttle-body replacement under warranty from separate adjustment and sensor-replacement procedures for out-of-warranty machines.

Engine electrical repair covers stator peak-voltage and resistance tests, ignition-timing verification, and starter-motor overhaul. Chassis tests distinguish HI/OFF/LO from variable-range handlebar and thumb warmers, with passenger warmer checks as well.

APV assembly cautions explain how incorrect valve orientation can cause severe engine damage. Flywheel-removal warnings identify crankshaft and stator-coil damage risks from incorrect puller setup.

Chassis Schematics and Setup References

Front-suspension procedures cover spindles, tie rods, suspension arms, and sway bars. The suspension servicing chart links each model to its matching rail, arm, and idler-wheel schematics and repair procedure, helping select the appropriate skid-frame instructions.

The color appendix provides harness part numbers, wire-color identification, and connector details. Examples include Ignition/Main Harness I for Crossfire 600 EFI/Sno Pro and M6 EFI, and Hood Harness III for Firecat applications.

Mechanical and diagnostic references include Cooling System Schematics, Drive Train Schematics (w/ACT Drive), Slide Rail Schematics, and the EFI Component Voltage/Resistance Chart – Air Temperature.

Reference tables cover torque specifications, fluid capacities, lubricant requirements, engine clearances, and wear limits. Application tables add clutch calibration, belt selection and offset data, spring selection, and shock setup specifications.

Track, clutch, brake, and pressurized-shock work requires the manual’s specified supports, guards, service equipment, and component-specific safety precautions.

Crankcase and EFI Pressure Examples

For crankcase leak testing on the covered two-stroke engines, the manual specifies an 8 psi test pressure and a maximum pressure loss of 1 psi per minute. Its pressure limit protects the engine seals from damage.

For the covered EFI fuel systems, the specification table lists fuel pressure at 42.8–47.3 psi, alongside model-specific throttle-position data and sensor-test information.