2008 Husqvarna CR 125 / WR 125 Workshop Manual (P/N 8000 B0503)

This official factory publication (P/N 8000 B0503, issued June 2007) breaks down the 125cc two-stroke powertrain for the 2008 Husqvarna CR 125 motocrosser and the WR 125 enduro. The 418-page reference details the exact differences between closed-course competition builds and street-legal configurations. It delivers 14 comprehensive chapters covering engine overhauls, clutch assemblies, and suspension tuning.

Documentation Walkthrough

The manual logically organizes complex procedures, starting with basic engine identification and chassis geometry. From there, it dives deep into the mechanical H.T.S. exhaust valve operation, cooling circuits, and precise assembly sequences for the constant-mesh gearbox. High-resolution exploded views and specialized transmission gear-ratio charts take the guesswork out of the rebuild process. Working on these high-strung two-strokes demands absolute precision. Always cross-reference torque specs and wear limits with this factory data before completing any major assembly work to prevent mechanical failure or injury.

Specification and Reference Data

Finding the right setup data is straightforward. The reference tables list critical values for suspension baselines, fluid maintenance, and engine construction, including specific cylinder head bolt torque sequences.

• Compression ratio: 8.8:1 for the CR 125 model
• Cooling system capacity: 1.1–1.3 liters for the WR 125 model
• Carburetor: Mikuni TMX 38 standard equipment for both variants
• Maintenance schedules: Specific replacement intervals for the reed valve, connecting rod, and clutch discs, tracked by engine hours for racing applications or kilometers for street use