Worked on Fuel shutoff cable installation. Bent and fabricated bracket for cable handle which is mounted on the fuselage wall directly under the Mixture control. Cable is a push to release type. Valve handle modified with a shorter handle 90 deg extention to allow for valve to operate with push/pull cable along its longtitudinal axis. Geometry is such that 3 inches of linear travel results in full valve motion from fully closed to fully open. Drilled hole in shank of AN3 under head for cable to be attached.