Patent ID: 7954617

Claim:
A motorcycle clutch for a drive connection between an engine and a transmission of a motorcycle, comprising: a manually operable clutch lever; engaging inner and outer disks; disengaging mechanism operable by the clutch lever for a pressure body which is spring-loaded by at least one clutch spring assembly for pressurization of the inner and outer disks; and a servo mechanism for reducing the operating force of the clutch lever, the servo mechanism being coupled to an intake section of the engine and utilizing negative intake pressure in the intake section to build up a servo force acting against a direction of the spring load of the clutch spring assembly, a negative pressure limitation device positioned between the intake section and a negative pressure port of the servo mechanism, wherein the negative pressure limitation device comprises a switching point disposed between the intake section and the negative pressure port, and which is movable between open and closed positions by an actuator in accordance with negative pressure in the intake section.