First, we removed the screw that holds the fast idle levers. We set the screw, spring, and small lever to the side for a later time. The larger lever we won't need because the kit comes with a new one. Using the original spring and small lever, we reassembled the parts to the throttle-shaft with the new larger lever from the kit and bolted it into the body of the carb with the original screw. This took a little effort, but we got through it by taking our time.