Honda GX240RT2 Service And Repair Manual page 249

FUEL SYSTEM
TECHNICAL FEATURES/STR (Self Tuning Regulator) GOVERNOR
OUTLINE
This engine has a STR (Self Tuning Regulator) governor that enables stable engine starting and fast engine warm-up with no man-
ual operation before and after engine starting.
The STR governor controls both throttle valve and choke valve with one throttle control motor inside the carburetor. The heater,
combined with a thermally-linked wax unit (Heater Assy.), controls the choke valve while starting a warm or cold engine.
The battery is not required to actuate the STR governor. The recoil starter allows the STR to function.
ECM
AIR TEMPERATURE SENSOR
ECM TEMPERATURE
CONTROL MOTOR
THROTTLE/CHOKE CONTROL
THROTTLE
gx240ut2_gx270ut2_gx340ut2_gx390ut2
HEATER CONTROL
HEATER ASSY.
CHOKE CONTROL
CHOKE
SOURCE SUPPLY
POWER COIL