Probable Cause:
1. Air In the Fuel System
Find the air leak in the fuel system and correct it. Remove air from the fuel system. Make reference to Removing Air From Fuel System in Testing & Adjusting.
2. Broken Torsion Spring On Sleeve Control Shaft
Install new parts as needed.
3. Linkage In Governor Does Not Move Freely
Clean all linkage and inside of governor housing. Install new parts for those parts that have damage.
4. Governor Springs Not Completely On Spring Seat
Put springs completely on spring seat.
5. Spring For Dashpot Governor Installed Wrong
Install spring correctly