Groundsmaster 3500 Page 6 − 29 Electrical System
Electronic Throttle Control (Gasoline Engine Only)
The engine speed on the Groundsmaster 3500−G is
controlled by an electronic throttle system. The system
includes an electronic throttle control at the operator’s
control panel and a throttle control valve at the Kubota
gasoline engine. The engine ECU uses the position of
the throttle control at the operator panel as an input to
determine the appropriate signal output for the throttle
control valve at the engine to set the engine speed.
The electronic throttle control at the operator’s panel is
a rotary hall effect sensor that varies output voltage
based on the sensor position. Use the Kubota Gasoline
Service Tool (KGST) and software, and the Kubota Dia-
gnostic Manual for WG972 engines to test the electronic
throttle control. Contact your Toro distributor for assist-
ance in Kubota engine troubleshooting.
1. Throttle control lever 2. Rotary hall effect senso
Figure 38
1
2
Electrical
System
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