Safety
3.5 Safety Guidelines for the Engine Control Unit (ECU)
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Operator’s Manual | SM100 | 5100064108 | 08/2022 | [en-US]
Cleaning and servicing
• Keep machine clean and free of debris such as leaves, paper, cartons,
etc.
• Keep labels legible. When pressure washing decals, direct the stream at
a 90 degree angle to the surface with the spray nozzle at least 12 inches
away.
• Do not clean the machine while it is running.
• Never use gasoline or other types of fuels or flammable solvents to clean
the machine. Fumes from fuels and solvents can become explosive.
3.5 Safety Guidelines for the Engine Control Unit (ECU)
• Never use the ECU for purposes that are not intended by YANMAR;
such as using unauthorized ECU, writing unauthorized data to ECU,
leaving it broken, or removing sensors and actuators. Doing so could re-
sult in the violation of emission control regulations and will void the prod-
uct warranty.
• Be sure to use the ECU in conjunction with the engines whose models or
serial numbers are specified by YANMAR. Other ECU/engine combina-
tions than specified will void the engine warranty.
• Replacing the fuel injection pump involves rewriting the fuel injection
data in the ECU. Be sure to contact your local YANMAR dealer before
replacing the fuel injection pump. Failure to rewrite the fuel injection data
before replacing the fuel injection pump will void the engine warranty.
• Replacing the ECU involves migrating the fuel injection data to the exist-
ing ECU to the new unit. Be sure to contact your local YANMAR dealer
before replacing the ECU. Failure to migrate the fuel injection data be-
fore replacing the ECU will void the engine warranty.
• Improper use or misuse of the ECU may result in death or serious injury
due to an abrupt and unexpected increase in engine speed.
3.6 Special Hazards
Electrical energy
• Use only fuses with the specified current rating.
• Stop the machine immediately if an electrical system malfunction occurs.
Disconnect the battery and contact a trained technician to perform trou-
bleshooting procedures.
• Regularly inspect the machine’s electrical components. Immediately re-
pair any defects such as loose connections, damaged or corroded con-
nectors, or cracked or scorched cables.
• Attachments with electrical connections must be compatible with the ma-
chine’s voltage specifications (12 volts).
• For specific safety precautions when working with batteries, see Main-
taining the Battery on page 98.
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