Suzuki TU250X Service Manual (2009)

Suzuki positioned the TU250X as a compact standard motorcycle that combined traditional styling with modern everyday engineering. The bike uses classic cues such as spoked wheels, a round headlight, a simple steel frame and extensive chrome, but pairs them with electronic fuel injection and contemporary emissions controls. Suzuki's later official TU250X brochure describes the same formula as a classically styled standard with a modern fuel-injected single-cylinder engine, emphasizing easy handling, fuel efficiency and straightforward road use.

The 2009 TU250X uses a 249 cm³ air-cooled OHC single-cylinder engine with a 72.0 × 61.2 mm bore and stroke and a 9.2:1 compression ratio. Fuel is delivered by electronic injection, and the service information documents the complete FI system, including throttle-position, intake-pressure and temperature sensors, secondary-throttle control, an oxygen sensor and Suzuki Diagnosis System procedures. Power passes through a wet multi-plate clutch and five-speed constant-mesh transmission to a chain final drive with a 43/15 reduction ratio.

The chassis is deliberately compact and conventional. Factory specifications list a 1,375 mm wheelbase, 770 mm seat height and 148 kg curb mass, with 18-inch spoked wheels, telescopic front suspension, twin rear shocks, a front disc brake and rear drum brake. This combination supports the motorcycle's role as a lightweight fuel-injected 250cc standard motorcycle suited to commuting, learning and relaxed everyday riding rather than high-performance use.

The TU250X also fits within Suzuki's longer history of simple 250-class standard singles. Suzuki's official Volty archive documents the 1994 Volty as an easy-handling 249 cm³ air-cooled SOHC single with the same 72.0 × 61.2 mm bore and stroke and a five-speed transmission. The 2009 TU250X retains that basic lightweight-standard concept while adding fuel injection, electronic diagnostics and later-generation emissions equipment. Related service information is organized in the Suzuki TU250X manual catalog.

This listing is specifically for the 370-page factory publication that identifies the U.S.-market TU250X as the 2009 model, effective from frame number JS1NJ4CA 92100001. The manual contains no 2008 identification and no supplementary sections extending applicability to later model years, so verified coverage is 2009 only.