O.S. Engines 22081408#1A-#3A Throttle Lever This is just the throttle lever; It has 2 holes for mounting the throttle linkage; This throttle arm is for the #40D carb used on the 40LA This is just the throttle lever; It has 2 holes for mounting the throttle linkage; This throttle arm is for the #40D carb used on the 40LA This is just the throttle lever; It has 2 holes for mounting the throttle linkage; This throttle arm is for the #40D carb used on the 40LA