2001 Yamaha XVS250(N), DragStar 250 / V Star 250 Service Manual (P/N 5KR2-AE1)

• Yamaha factory service manual for the 2001 XVS250(N), model code 5KR2: a 332-page PDF, first edition September 2000, with cover document code 5KR2-AE1.
• Engine removal and top-end repair, including cylinder-head disassembly, valve-guide replacement, piston inspection, and camshaft timing.
• Wet-clutch overhaul, starter-clutch inspection, and internal repair of the five-speed constant-mesh transmission, plus oil-pump service.
• MIKUNI BDS26 carburetor disassembly and fuel-level adjustment, fuel-pump testing, and air-induction-system inspection.
• Front-disc and rear-drum brake service, hydraulic bleeding, front-fork rebuilding, and steering-head and swingarm inspection.
• TCI ignition, starting, charging, and lighting fault tracing; separate EUR and OCE wiring diagrams distinguish light-switch and headlight-relay arrangements.

Technical Documentation Details

This factory service publication covers routine maintenance, engine overhaul, and chassis repair. It outlines the maintenance schedule, specifying intervals for fuel system checks, valve clearance adjustments, and lubrication requirements. Compression testing and ignition-timing checks support engine-condition diagnosis; the ignition timing is not adjustable.

Detailed exploded views and procedural charts map out the disassembly and assembly sequences for major engine and chassis components. Cable-routing drawings identify harness, hose, and control-cable paths, including clamp locations.

Engine and Drivetrain Repair

The air-cooled SOHC V-twin sections distinguish the front and rear camshafts and their timing references. Valve-seat inspection and lapping, rocker-arm and shaft checks, and piston-ring inspection extend the top-end coverage beyond routine adjustment.

Bottom-end work covers crankcase separation, crankshaft runout, and connecting-rod big-end side clearance. Transmission procedures examine gear dogs, shift forks, guide bars, and shift-drum grooves, with assembly and shift-operation checks. Clutch inspections address friction-plate wear, steel-plate warpage, and release-mechanism adjustment.

Fuel and Electrical Diagnosis

Carburetor procedures cover the vacuum piston and diaphragm, float valve, jets, and starter plunger. Throttle position sensor (TPS) resistance checks are provided with the sensor installed and removed, along with sensor-angle adjustment. The Air Induction System Diagrams identify fresh-air, vacuum, and exhaust connections for reed-valve and air-cutoff-valve inspection.

The Electric Starting System Circuit Diagram supports checks of the starting-circuit cutoff relay and the neutral, clutch, and sidestand interlocks. Starter-motor repair includes brush, commutator, and armature checks. The Carburetor Heater System Circuit Diagram accompanies thermoswitch testing and heater-resistance checks. Separate symptom-based troubleshooting covers difficult shifting, clutch slip or drag, poor running, and unstable handling.

Chassis Service and Repair Limits

Wheel procedures include bearing inspection, rim-runout measurement, static balancing, and rear-hub damper checks. Final-drive work covers chain wear and sprocket inspection. Front master-cylinder and caliper rebuilding extends brake coverage beyond pad replacement.

Fork procedures cover damper rods, bushings, seals, and oil-level setting. Rear-shock service covers removal, inspection, replacement, and spring-preload adjustment—not internal damper rebuilding.

The fork section warns that bottoming the tubes during disassembly can damage the oil-flow stopper. Brake-caliper instructions identify solvent-induced swelling and distortion of the piston seals.

Specification Highlights

The manual documents engine, chassis, and electrical specifications, including cylinder-head and clutch-boss torque tables, wear limits, clearances, battery and halogen-headlight ratings, and electrical test values. Oil data distinguishes total capacity from oil-change quantities with and without filter replacement. The Engine Oil Flow Diagrams trace lubrication through the engine and transmission.

Yamaha special-tool references include the valve spring compressor (90890-04019), universal clutch holder (90890-04086), and fuel-level gauge (90890-01312), with their uses identified in the relevant procedures.

Before performing major engine, brake, or suspension repair, verify complex procedures with a certified technician to ensure safe operation.