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Groundsmaster 5900/5910Page 3 -- 2Diesel Engine
General Information
This Chapter gives information about specifications of
the Cummins B3.3 diesel engine used in the Ground-
smaster 5900 and 5910. Additionally, some engine re-
pairprocedures aredescribedinthismanual.Described
adjustments and repairs require tools which are com-
monly available in many service shops.
Some service and repair parts for the engine in your
Groundsmaster are supplied through your Authorized
Toro Distributor. Be prepared to provide your distributor
with the Toro model and serial number of your machine
to obtain parts.
Detailed information on engine troubleshooting, testing,
disassembly and reassembly is identified in the Cum-
mins Service Manual that is available from Cummins.
The use of some specialized tools and test equipment
is explained in the Cummins Service Manual. However,
the specialized nature of some engine repairs may dic-
tate that the work be done at an engine repair facility.
Operator’s Manual
The Operator’s Manual provides information regarding
the operation, general maintenance and maintenance
intervals for your Groundsmaster machine. Refer to the
Operator’s Manual for additional information when ser-
vicing the machine.
Engine Identification
The engine dataplate located near the starter motor in-
cludes the engine serial number and control parts list
number. The fuel injection dataplate is located on the
fuel injection pump. The ECM dataplate is on the elec-
tronic control module attached to the flywheel end of the
engine. These engine identification tags will assist in
identifying the correct parts and service information for
the Cummins engine in your Groundsmaster.
Engine Electronic Control Module (ECM)
The Cummins engine that is used in theGroundsmaster
5900 and 5910 uses an electronic control module
(ECM) for engine management and also to communi-
cate with the TEC controllers and the operator Info Cen-
ter on the machine. All engine ECM electrical
connectors should be plugged into the controller before
the machine ignition switch is moved from the OFFposi-
tion to either the ON or START position. If the engine
ECM is to be disconnected for any reason, make sure
that the ignitionswitch is in the OFF position with the key
removed before disconnecting the ECM. Also, to pre-
vent possible module damage when welding on the ma-
chine, disconnect and remove the engine ECM from the
engine before welding.