Abstract: The housing of the breaker-distributor is formed with a shaft element inserted in a motor block, and with a flange thereon which is engaged by a claw surrounding the flange and gripping therearound, screwed to the motor to clamp the housing against the motor block. To permit minor adjustment for changes of relative position of the distributor and the motor block upon tightening of the clamping bolt, the attachment shaft is formed with adjustment means acting thereon to permit slight relative displacement of the shaft with respect to the motor block; these adjustment means may, for example, be a hexagonal engagement surface for connection to a wrench, preferably with tapering end faces so that upon rotary engagement of the wrench, simultaneously, a lifting force will be generated; or by forming the claw with threaded holes through which bolts are threaded, engaging the distributor housing eccentrically to exert pressure thereon and effect rotation about the shaft.