Yanmar 3JH5E Operation Manual page 68

PERIODIC MAINTENANCE
WARNING
Welding Hazard
• ALWAYS turn off the battery switch (if
equipped) or disconnect the negative
battery cable and the leads to the
alternator when welding on the
equipment.
• Remove the engine control unit
multi-pin connector. Connect the weld
clamp to the component to be welded
and as close as possible to the
welding point.
• NEVER connect the weld clamp to the
engine or in a manner which would
allow current to pass through a
mounting bracket.
• When welding is completed,
reconnect the alternator and engine
control unit prior to reconnecting the
batteries.
Entanglement Hazard
NEVER leave the power
switch on when you are
servicing the engine.
Someone may accidentally
start the engine and not
realize you are servicing it.
Shock Hazard
ALWAYS turn off the battery
switch (if equipped) or
disconnect the negative
battery cable before servicing
the equipment.
ALWAYS keep the electrical connectors
and terminals clean. Check the
electrical harnesses for cracks,
abrasions, and damaged or corroded
connectors.
60
NEVER use undersized wiring for the
electrical system.
Tool Hazard
ALWAYS remove any tools or shop rags
used during maintenance from the area
before operation.
NOTICE
Any part which is found defective as a
result of inspection, or any part whose
measured value does not satisfy the
standard or limit, must be replaced.
Modifications may impair the engine's
safety and performance characteristics
and shorten the engine's life. Any
alterations to this engine may void its
warranty. Be sure to use Yanmar genuine
replacement parts.
JH Series Operation Manual