2002 Arctic Cat 250, 300, 375, 400, and 500 ATV Service & Repair Manual (P/N 2256-469)

This 396-page PDF service manual covers the 2002 Arctic Cat 250, 300, 375, 400, and 500 ATV families. The model-specific material separates 2x4 and 4x4 configurations where applicable, 400/500 manual-transmission powertrains, and 375/500 automatic-transmission units. TBX-specific electrical, rear-suspension, body, seat, side-box, and cargo-box coverage is included. Because the procedures move directly into engine removal, crankcase splitting, precision measurement, and electrical testing, this manual is suited to experienced technicians and skilled owners with the tools and shop equipment required for major repair work.

Service may involve fuel, hot oil and coolant, batteries, elevated vehicles, and heavy engine/transmission assemblies. Use proper lifting and support equipment, keep ignition sources away from fuel, and follow the manual’s safety notices.

• Powertrain chapters cover engine/transmission removal and installation plus top-side, left-side, right-side, and center-crankcase disassembly and reassembly for the 250/300, 400/500 manual, and 375/500 automatic groups.
• Internal repair material addresses valve and piston service, cylinder and cylinder-head inspection, cam and timing components, crankshaft measurement, clutch inspection, shift-fork clearances, and driveshaft/countershaft assembly.
• Fuel, lubrication, and cooling procedures include carburetor schematics and service, oil-flow charts and oil-pressure testing, 250/300/375 oil coolers, 400/500 liquid cooling, radiator and thermostat work, and transmission-specific water-pump repair.
• Electrical coverage provides component test specifications for switches, relays, CDI units, magnetos, regulators/rectifiers, starter motors, charging circuits, indicator systems, and ignition timing, backed by model-specific wiring diagrams.
• Drive, suspension, and chassis sections document front differentials, drive axles, fully independent and ACT rear suspension, the TBX rear arrangement, 400 rear gear cases, hubs and brake calipers, A-arms, steering, toe adjustment, body panels, racks, and exhaust.
• Reference sections supply the periodic-maintenance chart, model-specific torque tables, capacities, approved lubricants, wear limits, clearance and adjustment data, electrical values, and condition/remedy troubleshooting charts.

Engine and Transmission Breakdown

Each powertrain family receives its own specifications and teardown path, with the 500 split between manual and automatic transmission versions. The manual identifies jobs that can be done in the frame before laying out full removal when required. It then follows the major assemblies through inspection and reassembly, including secondary gears, shift cams and dogs, bevel-gear backlash and tooth-contact checks, recoil starter, oil pump, magneto rotor, clutch, and final-drive components.

Valve adjustment calls for P/N 0444-092 on the 250/300 and P/N 0444-078 on the 375/400/500. Major repair sections reference the Side Case Puller P/N 0644-262, Magneto Rotor Remover P/N 0444-075, Crankcase Separator/Crankshaft Remover P/N 0444-009, Crankshaft Installer P/N 0444-018, Seal Removal Tool P/N 0644-072, and Fluke Model 73 Multimeter P/N 0644-191.

The 250/300 oil-filter procedure warns that installing the element backward cuts off oil flow and can damage the engine. In the 500 automatic water-pump section, direct contact with the new mechanical seal/ceramic seat can permanently damage the assembly.

Electrical, Chassis, and Diagnostic Detail

Electrical diagnosis is organized by component and model group rather than reduced to a single generic circuit. The wiring set includes separate model-specific diagrams, including the 300 2x4, 300 4x4, and 500 Automatic Transmission/TBX sheets. Other named visuals include the 400/500 Manual Transmission Oil Flow Chart, Rear Axle Gear Assembly - Fully Independent Rear Suspension schematic, and Mechanical Foot Brake Assembly schematic.

Troubleshooting tables cover engine starting, compression, spark, noise, overheating, clutch and shifting faults, secondary drive, carburetion, charging and starter circuits, steering/suspension, and hydraulic brakes. Removal and repair procedures extend beyond the powertrain to master-cylinder and caliper service, brake bleeding and pad burnishing, shock absorbers, swing arms, steering knuckles, front and rear A-arms, wheels, fenders, racks, and TBX cargo hardware. The scope is specific to the covered 2002 ATV configurations.