... raising the droop curve by increasing the spring pressure on a centrifugal governor. Generally this is ... Self-charging Generator14, Frequency Meter/Water-thermometer/Oil Pressure Gauge/Battery VoltmeterOptional Accessories1, Preheating Start System2, Diesel Engine ... Heater4, Speeding, High Temperature, High Oil Temperature, Low Pressure Alarm System5, Breaker6, Antifreeze Liquid7, Ground Wire8, Water ...