Injection Pump and Engine Speed Control

The Eco-governor engine has an electronic governor which controls the fuel supplied to the injection pump. It uses a proportional solenoid to control the amount of fuel. There is an ECU which controls the position of the proportional solenoid. The ECU and proportional solenoid controls the engine speed within +/-30 RPM and allows for up to 4 engine speeds to be selected depending on the unit model. For more Information see Yanmar TK486VEGS5 Engine Troubleshooting Manual.