1988-1990 Honda NX250 Service Manual (245 P.)

Honda NX250 1988–1990 Service Manual

• Covers 1988–1990 Honda NX250 motorcycles, detailing essential maintenance, engine, chassis, and electrical specifications
• Original OEM publication dated July 1988
• Contains 47 exploded-view diagrams and 6 detailed torque-specification tables for engine and chassis assembly
• Accessible from your device as soon as the order is placed
• Suitable for printing individual sections for shop-floor use
• This 1988 first edition provides the factory-authorized technical data for the NX250 model launch build

Document Coverage and Technical Data

What the Manual Documents

This Honda NX250 1988–1990 service manual documents procedures for the full motorcycle, covering general maintenance, lubrication, and system-specific component breakdown. It details the fuel system, including carburetor disassembly and adjustment, as well as cooling system testing and service. Engine removal and installation chapters are provided alongside guidance on the clutch, alternator, starter clutch, and cylinder head valve train components. Chassis sections cover suspension, braking, and wheels, while the electrical section provides wiring diagrams and starter system details.

Specification Highlights

Technical depth is provided throughout, featuring specific tolerances, torque values, and capacity data. The manual lists cylinder head bolt torque at 46 Nm (33 ft-lb) and 12 Nm (9 ft-lb) as specified in the engine data section. Coolant system total capacity is documented at 1.0 liters for the 1988–1990 Honda NX250 build. Valve clearance for the intake and exhaust is listed at 0.23 ± 0.03 mm in the cylinder head specification table. The Keihin 32 mm carburetor float level is specified at 14 mm. An official 245-page Honda OEM service manual covering the 1988–1990 Honda NX250, documenting engine, chassis, electrical, and cooling system specifications for the initial production run.