Single cylinder engine

Single-cylinder motorcycles are generally regarded as the original form of two-wheel transportation. The BMW F650 models follow the principle of "less is more". Their trademark is the robust, water-cooled single-cylinder 4-stroke engine. With its uncomplicated structure, it is predestined for use in light Enduro motorcycles - i.e. bikes which offer excellent performance both on and off the road. The F 650 Scarver also provides the appropriate degree of acceleration with its powerful torque and high level of refinement. Its low fuel consumption also gives reduced running costs for this entry-level category.

The liquid-cooled single-cylinder 4-stroke engine with 652 cubic centimeters has a crankshaft made of separately compressed components which rotates within friction bearings in the vertically separable housing. The connecting rod also has friction bearings, its lower eye being non-divided. As with all engines in the BMW Motorrad range, the slipper-skirt piston runs in a nickel-silica-carbide-coated bore which ensures minimal wear-and-tear and thus high mileage. In order to compensate for strong forces of inertia, a balance shaft powered by spur gears rotates the other way to the crankshaft. It is positioned at the front of the engine casing in front of the crankshaft and drives the water pump itself.