2005 Yamaha XG250 Tricker Service and Repair Manual (P/N 4D6-28197-E0)

Yamaha's 2005 XG250 Tricker service manual covers the 4D61 and 4D62 models. Publication 4D6-28197-E0, first edition May 2005, documents the carbureted, air-cooled SOHC engine, chassis, and electrical systems.

Text search and diagram navigation: Chapter text is searchable, with bookmarks for the service sections and wiring diagram. Some graphical identifiers are not searchable, and the two external RETURN links point to files that are not included. Small wiring labels are readable when enlarged.

• Engine repair: Engine removal, cylinder-head and valve service, camshaft inspection, piston replacement, crankcase separation, and crankshaft installation.

• Clutch and transmission: Wet-clutch disassembly, push-lever adjustment, shift-fork and shift-drum inspection, and gearbox disassembly with gear-engagement checks.

• Fuel and emissions: TEIKEI MV33 carburetor overhaul, float-height adjustment, exhaust-gas testing, air-induction inspection, and carburetor-heater diagnosis.

• Brakes and chassis: Front and rear master-cylinder and caliper repair, hydraulic bleeding, front-fork rebuilding, steering-head service, and swingarm inspection.

• Electrical troubleshooting: CDI ignition, electric starting, charging, lighting, and signaling circuits, with component tests and system-specific fault charts.

• Maintenance and reference data: Periodic service schedules, lubrication charts, torque tables, wear limits, fluid capacities, and electrical test specifications.

Written primarily for Yamaha dealers and qualified mechanics, this manual assumes an understanding of motorcycle mechanics and access to the tools needed for the procedures described.

Engine, Clutch and Transmission Repair

The engine sections document disassembly, inspection, and assembly of the 249cc SOHC powerplant. Cylinder-bore measurements, piston clearances, valve-stem dimensions, and camshaft wear checks are supported by component-specific limits. Cylinder-head procedures include the tightening sequence and timing-chain tensioner checks.

Lower-end work: Oil-pump inspection, balancer-weight gear alignment, and crankshaft installation accompany the transmission procedures. Exploded clutch and transmission views show component order, while the gearbox reference tables include all five ratios.

The crankcase section identifies the shift-drum segment and drive-axle circlip positions that matter during separation, where incorrect positioning can damage the case.

Special-tool references include crankcase separator 90890-01135 / YU-01135-B and universal clutch holder 90890-04086 / YM-91042.

MV33 Carburetor and Air-Induction Service

Carburetor coverage includes diaphragm, coasting-enricher, starter-plunger, needle-valve, and jet inspection, along with reassembly and idle adjustment.

The exhaust-gas procedures distinguish tests with the air-induction system operating from tests with it inactive. Air cut-off valve checks and hose-routing illustrations support diagnosis of the emissions system.

Brakes, Suspension and Final Drive

Brake sections detail piston seals, master-cylinder kits, and disc-runout checks. Wheel procedures add bearing replacement and static balancing; final-drive coverage includes O-ring chain wear and sprocket replacement.

Fork instructions address bushings, damper rods, and oil seals, including the risk of damaging the oil-flow stopper during separation. Rear-shock procedures cover assembly removal, inspection, and replacement; internal damper overhaul is outside this manual's scope.

Follow the manual's safety precautions for hydraulic brakes and the nitrogen-charged rear shock absorber.

Electrical Fault Isolation and Wiring Diagrams

Circuit diagrams cover Ignition, Electric Starting, Charging, and Carburetor Heating. The reference sections also include the Engine Oil Lubrication Chart and Cable Routing drawings.

The starting-circuit cut-off explanation connects the clutch, sidestand, and neutral switches to relay operation. Together with the no-crank troubleshooting chart, it helps distinguish an interlock problem from a starter-motor fault.

Pickup-coil and stator-coil tests cover the F5XT magneto, supported by resistance specifications, relay and diode checks, and rectifier/regulator testing. Carburetor-heating diagnosis includes thermo-switch continuity and warmer-resistance tests.

Printable PDF and Included Pages

The ZIP contains one printable 286-page PDF in English. The total includes two cover pages, five introductory pages, 12 blank or chapter-ending pages, and two large-format wiring sheets showing black-and-white and color versions of the circuit.