... , heavy duty vehicle, crane -control pump, throttle -stroke adjustable -easy operation 1. rack and pinion control lever, linear motion2. for Auto ... , crane, engineering machinery, to control pump, valve, throttle3. Can sustain both push and pull effort4. Stroke can be ... customers requirement.5. Ergonomically designed, easy installation and operation. Wholewin YK2 Pull-push Throttle Control system