1991-1998 Suzuki 250F Service Manual (P/N 99000-99044-10G)

• Official 100-page OEM publication covering 1991–1998 Suzuki GSX250F motorcycles, including the GSX250FN, GSX250FP, and GSX250FR variants
• Powered by the 248cc water-cooled four-cylinder DOHC engine
• Part Number: 99000-99044-10G (Copyright Suzuki Motor Corporation 1991)
• Features 25 detailed chassis bolt torque tables and comprehensive engine disassembly diagrams
• Serves as the primary technical reference for the entire production run, detailing specific engine assembly and carburetor balancing data for the F-series build

Mechanical Systems Coverage

The manual delivers extensive data on the internal mechanics of the 248cc power plant. Initial sections outline rigorous periodic maintenance schedules for critical subsystems. You will find exact parameters for valve clearance adjustments, fuel line integrity checks, and battery inspection. The technical walkthrough continues directly into engine removal procedures and cylinder head servicing. It provides detailed internal inspection data for pistons, connecting rods, and crankshaft components. Before performing any heavy engine work or testing the fuel and electrical systems, always ensure the workspace is properly ventilated and standard shop safety protocols are strictly followed to prevent injury.

Engineering and Specification Highlights

Beyond the engine, this documentation thoroughly covers the chassis and electrical framework. It lists precise torque values for all crucial fasteners, ranging from the steering stem assembly to the rear swingarm pivot. Cooling system specifications highlight correct coolant ratios and radiator maintenance thresholds. The electrical section maps out ignition timing points alongside exact spark plug types, specifying a gap of 0.6–0.7 mm for optimal combustion performance. Engine rebuilders will benefit from the cylinder head specification table, which lists the intake valve clearance at 0.17–0.27 mm. Furthermore, it outlines the transmission gear assembly and shift fork groove tolerances, ensuring mechanics have the exact factory data required for precise reassembly.