1991–2003 Yamaha Warrior 350 YFM350XL(C) Service & Repair Manual (P/N LIT-11626-12-53, LIT-11616-07-50)

• 505-page PDF set of Yamaha factory publications: a 337-page YFM350 service package and a 168-page YFM350XL(C) owner's manual. Yamaha literature numbers are LIT-11616-07-50, LIT-11616-08-60, LIT-11616-10-28, LIT-11616-10-89, and LIT-11616-15-09; the owner's manual is P/N LIT-11626-12-53.
• Model-specific service coverage: the YFM350XA base manual, factory change-data supplements for YFM350XE, YFM350XJ, YFM350XKC (California), and YFM350XP, plus the separate YFM350XL(C) owner's publication. All supplements are paired with the required base manual in this set.
• Engine and drivetrain repair: engine removal and installation, cylinder-head and valve work, camshaft and timing-chain service, piston and crankshaft inspection, clutch and oil-pump repair, crankcase separation, and forward/reverse transmission and shift-system disassembly, inspection, assembly, and adjustment.
• Carburetor and electrical diagnosis: Mikuni BTM36SH carburetor disassembly, inspection, reassembly, and fuel-level adjustment; CDI ignition, electric-starting interlocks, charging, lighting, switch-continuity checks, component test data, fault-isolation charts, and model-specific wiring diagrams.
• Chassis and brake service: wheel and hub work, hydraulic disc-brake repair, master-cylinder and caliper disassembly, brake bleeding, front suspension and steering inspection, toe-in adjustment, rear shock and swingarm service, and drive-chain inspection and adjustment.
• Owner operation and scheduled maintenance: control identification, pre-operation checks, cold and warm starting, forward/reverse drive selection, shifting, parking, hill and side-slope techniques, shallow-water and rough-terrain guidance, maintenance schedules, cleaning, storage, specifications, and troubleshooting.

Factory Service Scope

The YFM350XA service manual supplies the main repair coverage. Its chapters address machine identification, service specifications, torque data, periodic inspection and adjustment, engine overhaul, carburetion, chassis, electrical systems, and symptom-based troubleshooting. Identification data includes model code 3GD5, starting VIN JY43GDW0LC051101, and engine starting number 3GD-051101. The YFM350XE supplement identifies model code 3GDB, starting VIN JY43GDA0PA095101, and engine starting number 3GD-095101.

Engine coverage reaches well beyond routine tune-up work. Exploded views support removal, disassembly, inspection, repair, and assembly of the decompression cam, cylinder head, valves and guides, camshaft and rocker arms, piston and rings, crankshaft and connecting rod, starter drives, primary drive, balancer, clutch, oil pump, shift mechanism, transmission, bearings, seals, and crankcases. The related pages provide component torque tables, lubrication points, timing marks, locking-agent notes, replacement symbols, wear limits, and final adjustment data.

Supplements, Diagnostics, and Visual References

The XE supplement adds revised identification, specifications, cable routing, and throttle-cable adjustment. XJ coverage includes engine and electrical changes, periodic-maintenance data, and diagnosis of the parking-brake-linked engine revolution limiter. The XKC publication records California carburetor and maintenance changes. XP material updates engine, chassis, and electrical specifications, cable routing, rear brake-light switch adjustment, switch testing, ignition and signal-system diagnosis, and its wiring diagram. These publications contain model-change data rather than separate full-overhaul chapters, so they rely on the included YFM350XA base manual.

Useful visual references include the Lubrication Diagrams, Cable Routing layouts, the BTM36SH Carburetor Section View identifying starter, pilot, float, and acceleration-pump circuits, the Electrical Starting System Circuit Diagram, Starting Circuit Operation, and wiring diagrams for the YFM350XA, the XJ supplement, and the YFM350XP. Listed factory tools include the crankcase separator YU-01135 with adapter YM-1382, valve spring compressor YM-04019, flywheel puller YM-01404, rear axle nut wrench YM-37132, and dynamic spark tester YM-34487.

The manual flags repair details that are easy to miss. Piston-pin circlips are one-time-use parts, with the sharp-edged corner positioned opposite the thrust it receives; incorrect installation can damage the piston and cylinder. Cleaned bearings must not be spun dry with compressed air because their surfaces can be damaged. The nitrogen-pressurized rear shock and remote gas cylinder receive handling, removal, inspection, and disposal cautions rather than an internal shock-overhaul procedure.

Owner Operation and Maintenance

The June 1998 YFM350XL(C) owner's manual explains the switches, indicator lights, throttle and speed limiter, clutch and brake controls, parking brake, shift pedal, drive select lever, fuel system controls, seat, and shock adjustments. It covers the constant-mesh 6-speed forward and 1-speed reverse transmission, starting and break-in, loading, and operating practices for hills, slopes, shallow water, rough terrain, sliding, and skidding.

Its safety section locates and reproduces six warning and specification labels addressing passenger prohibition, drive-select use, tire pressure and load limits, the nitrogen-charged rear shock, minimum operator age, and general ATV hazards. Maintenance coverage includes engine oil, spark plug, air filter, carburetor and idle adjustment, valve clearance, brake pads and fluid, parking brake, clutch free play, drive chain, cable and pivot lubrication, wheels, battery, fuse, headlight, spark arrester, and troubleshooting. The specifications chapter consolidates fluid capacities, approved lubricants, adjustment data, tire information, chassis dimensions, drivetrain ratios, and electrical ratings.