Groundsmaster 3500 Page 6 − 3 Electrical System
Kubota Gasoline Engine − Electrical Components
The engine used in the Groundsmaster 3500−G fea-
tures an electronic control unit (ECU) that controls a
common rail fuel injection system, electronic throttle
valve (ETV), and a catalytic muffler exhaust system with
a pre−muffler oxygen (O2) sensor. The ECU receives in-
formation from numerous Kubota engine sensors and
the following traction unit inputs:
Standard Control Module (SCM)
Electronic Throttle Control
The information provided by the various inputs allows
the engine ECU to monitor and control engine operation
for optimum engine performance.
All wire harness electrical connectors should be
plugged into the ECU before the machine ignition switch
is moved from the OFF position to either the ON or
START position. If the engine ECU is to be disconnected
for any reason, make sure that the ignition switch is in
the OFF position with the key removed before discon-
necting the engine ECU. See Chapter 4 − Kubota Gasol-
ine Engine In this manual for additional engine ECU
information.
Additional information on troubleshooting and servicing
engine electrical components can be found in the appro-
priate Kubota Workshop Manual and Diagnostic Manu-
al.
Figure 2
1. Engine (Model 30809)
2. Engine ECU
1
2
Electrical
System
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