Polaris Ranger TM, 2x4, 4x4, 6x6 UTV Service Manual 2004 (P/N 9918790 / 9918796)

• Exact model coverage: 2004 Ranger TM (A04RB63AA), Ranger 2x4 (A04RB42AA), Ranger 4x4 (A04RD50AA / A04RD50AB), and Ranger 6x6 (A04RF50AA). This 424-page PDF is Polaris Service Manual PN 9918796; the publication table identifies PN 9918790 as the separate owner’s manual.
• Engine repair is divided by platform: Robin EH63PFE010 air-cooled V-twin service for the Ranger TM, Fuji EH42PLE083 liquid-cooled single-cylinder service for the 2x4, and Fuji EH50PLE164 coverage for the 4x4 and 6x6. Procedures include engine removal, cylinder honing, top- and bottom-end teardown, valve and cylinder-head work, inspection, assembly, installation, and troubleshooting.
• Variant-specific PVT coverage includes drive and driven clutch removal, disassembly, inspection, bushing service, drive-belt inspection, clutch offset and alignment, reassembly, exploded views, and operating-fault diagnosis.
• Final-drive sections cover TM/2x4 and 4x4/6x6 front-hub differences, CV axles and boots, prop shafts and U-joints, front gearcase repair, the complete 6x6 mid-drive system, and model-specific rear differential service.
• Chassis, transmission, and brake procedures include internal transmission repair, shift-linkage adjustment, steering and toe alignment, A-arm/strut/ball-joint work, brake bleeding, parking-brake adjustment, and front and rear caliper overhaul.
• Electrical diagnosis is supported by ignition, charging, and starting-system test flow charts; ECM and CDI checks; coolant-sensor and fan tests; an electric box-lift actuator diagnostic chart; and separate TM and 2x4/4x4/6x6 wiring diagrams.

This is a shop-level service manual, best suited to experienced mechanics and well-equipped owners who can interpret inspection data and use specialty pullers, pressure-testing equipment, and a digital multimeter. Polaris specifically reserves PVT work for trained authorized technicians and recommends MSD-certified technicians for steering repair and adjustment.

Engine and Fuel-System Walkthrough

The Ranger TM chapter follows the EH63 wet-sump Robin V-twin through lubrication and sectional views, component inspection, complete disassembly, and final assembly. The Fuji chapter goes further into the liquid-cooling system, oil-pump priming, cylinder-head and valve-seat repair, crankcase and bearing assembly, crankshaft and counterbalancer end-play inspection, and sealed-recoil service. This separation matters because the TM’s air-cooled systems and procedures do not apply to the liquid-cooled 2x4, 4x4, and 6x6 engines.

Carburetion is also model-specific: the TM uses a Nikki 27 mm carburetor, while the other models use a Mikuni BST 34 CV unit. The manual covers removal, disassembly, cleaning, inspection, float and fuel-level checks, needle-and-seat leakage testing, jetting guidance, fuel-pump service, tank removal and installation, and fault isolation.

Drivetrain and Chassis Repair

The TM has its own clutching and transmission material, separate from the 2x4/4x4/6x6 procedures. The final-drive chapter also draws useful boundaries: TM and 2x4 front hubs use a different service path from 4x4/6x6 hubs, and the 6x6 receives dedicated mid-drive hub, shaft, and gearcase repair coverage. Body and suspension material extends to cab, seat, hood, cargo box, steering, A-arms, struts, swingarm, and front ball-joint replacement.

The EH63 assembly section warns that incorrect cam-to-crank timing alignment can damage the engine. In the TM PVT, misplaced spider shims disturb clutch balance, while shimming the drive-clutch spring can cause clutch-cover failure.

Diagnostics, Diagrams, and Shop Data

Useful graphics include the EH63 oil-flow diagram, EH42PL/EH50PL engine exploded view, Mikuni BST 34 fuel-flow diagram, drive/driven clutch exploded view, electric box-lift actuator diagnostic chart, and model-specific 2004 Ranger wiring diagrams. The electrical chapters add ignition-timing checks, CDI output testing, alternator and charging-system diagnosis, starter voltage-drop testing, and component resistance specifications.

Shop reference data includes component-specific torque tables, fluid capacities and approved lubricants, wear limits, clearances, valve data, cooling-system pressure-test specifications, carburetor jetting charts, and electrical test values. Listed service tools include the water-pump mechanical-seal puller PN 2872105, Mity Vac pressure tester PN 2870975, drive-clutch puller PN 2870506, spider removal/installation tool PN 2870341, and Fluke 77 digital multimeter PV-43568.

Support the vehicle securely before chassis or driveline work, isolate electrical power where directed, and follow the manual’s precautions for fuel, hot coolant, brake fluid, and rotating clutch components.