BMW F650CS Service Manual (2001)

BMW introduced the F650CS in 2001 as a new road-focused member of its single-cylinder F-series. BMW presented the F 650 CS at the Frankfurt Motor Show in September 2001 and positioned it as a city-oriented motorcycle aimed at riders who wanted easy handling, everyday practicality and a more unconventional design than the established F 650 GS. BMW also described it as an all-new motorcycle rather than simply a road-trimmed version of the earlier F 650 ST. See the official BMW F 650 CS launch material.

The engine platform is a 652 cc liquid-cooled four-stroke single with double overhead camshafts, four valves and electronic engine management. Factory specifications give a 100 × 83 mm bore and stroke, 11.5:1 compression ratio, 37 kW output and 62 Nm of torque. A five-speed gearbox and oil-bath multi-plate clutch provide conventional motorcycle control, while the dry-sump lubrication system uses the frame itself as the engine-oil reservoir, freeing the usual tank area for the model's distinctive central storage compartment.

The most unusual technical feature is the final drive. Instead of the chain used by the F 650 GS, the road-only CS uses a 26 mm toothed belt driving a single-sided aluminium swingarm. BMW described that combination as a world first in motorcycle construction. With 17-inch cast wheels, road-biased suspension, a 300 mm front disc, a 240 mm rear disc and optional ABS, the machine was developed as a belt-drive single-cylinder roadster with an emphasis on clean everyday use and agile urban handling.

The F 650 CS also represents a distinct step in the F-series lineage. Its predecessor relationship was to the more conventional F 650 ST road model, while its engine and five-speed transmission were derived from the newer F 650 GS platform. BMW revised the single-cylinder range again for model year 2004, introducing twin-spark ignition to the F 650 CS, F 650 GS and F 650 GS Dakar. That later change is important when distinguishing the early single-spark specification documented here from subsequent versions. See BMW's official 2004 model update.

For related documentation, browse the BMW F650CS category. This listing is based on the factory Repair Manual printed in Germany 06/01, with its maintenance schedule dated 07.2001. The publication does not include a model-year application table establishing compatibility through 2005, so the catalog entry is conservatively verified for 2001 only.