Suzuki Burgman AN400 Service Manual (2003)

Suzuki launched the Skywave 400, exported as the Burgman 400 in many markets, as a large-displacement scooter designed for comfortable high-speed road use as well as everyday practicality. Suzuki's official Skywave 400 / Burgman 400 archive records a full model change for 2002 that brought sportier bodywork, substantially larger storage spaces and electronic fuel injection. The factory manual here identifies the corresponding AN400 export model specifically as the 2003 model.

The AN400 uses a 385 cm³ liquid-cooled OHC single-cylinder engine with an 83.0 × 71.2 mm bore and stroke and a 10.2:1 compression ratio. Electronic fuel injection replaced the carbureted arrangement of the earlier design, improving starting and fuel control. Power is delivered through a dry-shoe automatic centrifugal clutch and a V-belt continuously variable transmission with a 2.203-0.854 variable ratio.

Factory specifications list a 1,590 mm wheelbase, 695 mm seat height and 184 kg dry mass. The scooter uses 13-inch front and rear wheels, telescopic front suspension, link-type rear suspension and disc brakes at both ends. The bodywork, large under-seat storage and automatic drivetrain position it as a 385cc fuel-injected maxi-scooter intended for commuting, touring and sustained road speeds rather than only short urban trips.

The service manual reflects the more sophisticated electronic systems introduced with this redesign. It includes ECM self-diagnosis, injector and sensor testing, throttle-body servicing, fuel-pump and regulator checks, cooling-system procedures, automatic-clutch and V-belt service, final-reduction maintenance and conventional chassis and electrical diagnosis. Separate emission-control sections cover fuel-injection, crankcase and PAIR systems, together with the heated oxygen sensor fitted to applicable markets.

This listing is specifically for the 384-page factory service manual identifying the AN400 as the 2003 model. Although the manual was prepared in November 2002, that date is the publication date and does not expand its verified model-year coverage. No 1998-2002 or 2004-2006 supplementary sections are included. Related publications are organized in the Suzuki Burgman AN400 manual catalog.