2011 Yamaha YFM125RA Raptor 125 Service & Repair Manual (P/N LIT-11616-24-36)

• Coverage: 2011 Yamaha Raptor 125 YFM125RA model codes 2PA1 (USA), 2PA2 (Canada), and 2PA3 (Australia/New Zealand); a 300-page PDF carrying the cover identifiers LIT-11616-24-36 and 2PA-28197-10.
• Engine repair coverage runs from removal and installation through cylinder-head, camshaft, valve, piston, clutch, oil-pump, crankcase, crankshaft/balancer, generator/starter-clutch, and five-speed transmission service.
• Chassis sections document wheel-hub and rear-axle work, front and rear hydraulic brake repair and bleeding, steering and front-arm service, shock inspection, swingarm work, and drive-chain inspection and adjustment.
• The BSR29 carburetor section covers fuel-tank and fuel-cock service, carburetor inspection and assembly, installation, and fuel-level measurement and adjustment, with market-specific carburetor data.
• Electrical diagnosis uses system-specific circuit diagrams and troubleshooting charts for ignition, electric starting and the starter cut-off circuit, charging, lighting, signaling, and carburetor heating, backed by individual component tests.
• Reference material includes maintenance schedules, component torque tables, lubrication charts, cable-routing views, capacities, wear limits, clearances, electrical test data, exploded job-order diagrams, and complete YFM125RA wiring diagrams.

Manual Contents

Yamaha produced this service manual primarily for its dealers and qualified mechanics, and it assumes that anyone performing the work already understands basic ATV mechanics and repair techniques. The covered machine is the 124 cm³ air-cooled SOHC single with wet-sump lubrication, electric starting, a wet multi-disc clutch, constant-mesh five-speed transmission, chain final drive, and a single BSR29 carburetor.

Across eight chapters, the manual moves from vehicle identification and general shop practices into specifications and scheduled maintenance, then through chassis, engine, fuel, electrical, and symptom-based troubleshooting. Removal and disassembly sections open with exploded views and job-order tables; sequential text adds inspection criteria, special tools, replacement points, lubrication requirements, and tightening data.

Factory Repair Coverage

Periodic service material covers the emissions-maintenance schedule, valve-clearance and idle adjustment, starter enrichment operation, crankcase breather and exhaust checks, spark-arrester and air-filter cleaning, engine-oil service, and control-cable adjustment. Chassis maintenance includes brake operation and hydraulic bleeding, pad and hose checks, parking-brake setup, hub-bearing checks, shock preload, suspension-pivot lubrication, drive-chain service, steering inspection, and toe-in adjustment.

The engine repair chapters supply inspection and service-limit data for the cylinder head, valve guides and seats, camshaft and rocker gear, cylinder, piston and rings, clutch pack, trochoid oil pump and rotary filter, starter clutch, generator, crankshaft, connecting rod, balancer, bearings, shift forks, shift drum, and gearsets. Chassis repair reaches wheel-hub bearing installation, rear-axle removal and installation, brake-disc inspection, caliper and master-cylinder disassembly and assembly, steering joints, and suspension pivots.

Regional Detail and Diagnostics

The specification tables distinguish carburetor ID mark 2PA1 00 for USA/Canada from 2PA1 10 for Australia/New Zealand, with different jet-needle specifications and regional pilot-screw data. Canadian-market body hardware is also identified separately for the reflector and license-bracket arrangements.

Electrical diagnosis is organized around fault-isolation charts rather than a parts list. Named visual references include the engine-oil lubrication chart, cable-routing views, ignition circuit diagram, starting circuit cut-off operation diagram, carburetor-heating circuit diagram, and final YFM125RA wiring diagram supplied in both black-and-white and color. A separate troubleshooting chapter addresses starting failure, incorrect idle, poor medium- and high-speed performance, shifting and clutch faults, overheating, weak braking, unstable handling, and lighting or signaling failures.

Special Tools and Service Cautions

The special-tool index cross-references international 90890 numbers with USA/Canada tool numbers. Examples include crankcase separating tool 90890-01135 / YU-01135-B, flywheel puller 90890-01362 / YU-33270-B, 46 mm rear-axle nut wrench 90890-01498 / YM-37134, and fuel-level gauge 90890-01312 / YM-01312-A.

Manual-specific repair cautions flag two easy ways to create additional damage: turning the crankshaft while installing the camshaft sprocket can cause damage or leave the valve timing incorrect, while high-pressure cleaning and unsuitable solvents can damage the drive chain’s O-rings. Hydraulic brake work and handling of the nitrogen-charged rear shock require the specified procedures, proper support, protective equipment, and workshop-level competence.