2004–2006 Suzuki RM-Z 250 Factory Service Manual (PN 99000-10910 / 99924-1324-02)

• Covers the 2004–2006 Suzuki RM-Z 250 and Kawasaki KX250F, including the N1 variant with the DOHC 4-valve liquid-cooled engine.
• Official 358-page OEM publication (Suzuki PN 99000-10910 / Kawasaki PN 99924-1324-02, Second Edition, January 2004).
• Contains 17 chapters of technical documentation and descriptive repair data, featuring over 50 component exploded-view diagrams.
• Primary technical reference for the N1-series engine and chassis assembly used across both brands.
• Explores critical components like the Keihin FCR37 carburetor, digital AC-CDI, semi-dry sump lubrication, multi-disc wet clutch, and Uni-Trak suspension.
• Provides essential visual aids, including wiring diagrams, a Periodic Maintenance Chart, Lubrication System Charts, cable routing views, and unit conversion tables.

System Coverage and Documentation

This factory PDF provides complete maintenance, adjustment, and assembly data for the 2004–2006 Suzuki RM-Z 250 and Kawasaki KX250F. The document is organized by major motorcycle system, extensively covering the Crankshaft/Transmission, Wheels/Tires, Final Drive, Steering, and Frame. It details baseline requirements for the fuel system, engine top end, cooling circuit, and electrical diagnostics. Each chapter outlines component sequences for disassembly, inspection, and reassembly. By following these precise procedures, skilled DIYers and technicians can bypass expensive dealership labor rates for intensive tasks like adjusting valve clearances, rebuilding the upside-down telescopic forks, overhauling the carburetor, or splitting the crankcase. Exploded-view illustrations clearly identify parts requiring specialized torque settings, locking agents, or lubrication. Coupled with a comprehensive troubleshooting guide, this documentation streamlines complex repair work and helps you successfully fix common running issues, drastically reducing diagnostic and bench time for professionals.

Specifications and Reference Values

The engine is specified with a 249 mL displacement and a 12.6:1 compression ratio. Standard valve clearance for the intake is listed at 0.10–0.15 mm in the cylinder head specification table. Cooling system capacity is documented at 1.20 liters. Detailed torque requirements are provided for all major fasteners. For instance, the cylinder head bolts in the engine top end section require exactly 50 Nm. Additional reference values cover transmission gear ratios, suspension oil volumes, and precise tire pressures.

Technicians servicing these early-generation 250F powerplants should be aware of specific design characteristics. The camshaft chain tensioner is a non-return type; loosening its mounting bolts without fully resetting the push rod will severely damage the tensioner and the timing chain upon retightening. Furthermore, extreme care must be taken with the oil filter orientation, as installing it backward completely blocks the semi-dry sump oil flow, causing immediate engine seizure.

Working on high-performance motorcycles involves inherent physical risks and the potential for property damage. Always utilize standard workshop safety protocols when handling heavy components or combustible fluids. Ensure all service data and torque specifications are cross-checked against this authoritative OEM publication before executing any mechanical procedures.