Chapter 3
OPERATION
3-6
Operation
:$51,1*
Do not approach rotating parts during operation.
Entanglement by rotating parts can cause serious
injury.
&$87,21
Do not touch any hot part of the engine such as
exhaust pipes during operation or immediately after
shut down. A hot engine can cause burns.
&$87,21
Always provide adequate ventilation in the engine
room. If air supply to the engine room is not sufficient,
the room temperature rises and can affect engine out-
put and performance.
For the first 50 hours, operate the engine under a light
load for break-in operation.
Operating the engine under heavy load or severe con-
ditions during the break-in period can shorten the ser-
vice life of the engine.
Do not turn the battery switch to OFF when the engine
is in operation. Turning off the battery switch during
operation not only stops the battery charge but also
causes malfunctioning of instruments and deteriorates
the alternator diode and regulator.
Never turn the key to the START position during oper-
ation. The starter may be damaged.
Inspection during operation
Carefully check the exterior of engine such as piping
joints for leaks.
Check for abnormal engine noises or vibrations such
as knocking.
Check the color of exhaust gas from the exhaust muf-
fler.
Note:
For abnormal exhaust gas conditions, refer to
"Other problems and countermeasures" (11-3)
.
Check the instruments and gauges for proper opera-
tion and make sure they indicates normal values.
Note :(a)
When the oil pressure drops below 0.15
MPa {1.5 kgf/cm²} [21 psi] in normal opera-
tion, or below 0.05 MPa {0.5 kgf/cm²} [7 psi]
at low idling, stop the engine immediately.
Be sure to locate the cause of problem and
correct it before restarting the engine.
(b)
When the high temperature alarm switch is
activated in normal operation, change the
engine operation immediately to low idling
operation until the engine temperature
decreases to the normal operating level.
Then, operate the engine for another 5 or 6
minutes for cooling before stopping the
engine. Be sure to locate the cause of prob-
lem and correct it before restarting the
engine.
Table 3-3
Standard values at rated speed
Item
Standard value
Engine oil pressure
gauge
0.29 to 0.49 MPa
{3 to 5 kgf/cm²}
[43 to 71 psi]
Coolant temperature
70 to 90°C
[158 to 194 °F]
