You can begin by making sure your governor is working correctly. The process for setting up the governor is as follows:
1. Loosen the governor arm pinch-bolt, and move the governor arm to fully open the throttle valve.
2. With the governor arm held in the fully open position, turn the governor arm shaft in the same direction as far as it will go using a small wrench across the flat on the shaft, and tighten the pinch-bolt.
3. Check to be sure the governor arm and throttle valve move freely.