all the way out. This control cuts off the air to the
engine. Do not try to restart again until the cause for
the malfunction has been found and corrected.
Remove the radiator or heat exchanger tank cap slowly
a f t e r the engine has reached normal operating
temperature and check the engine coolant level. The
CAUTION: The emergency shutdown system
coolant level should be near the top of the opening. If
should never be used except in an emergency.
necessary, add clean soft water or a high boiling point
Use of the emergency shutdown can cause oil to
be sucked past the oil seals and into the blower
The air shut-off valve, located on the blower air inlet
housing, must be reset by hand and the "Emergency
Check the marine gear oil pressure. The operating oil
Stop" knob pushed in before the engine is ready to
pressure range at operating speed is 130-155 psi (896-
1068 kPa) (Allison Torqmatic gear). The operating oil
pressure varies with the different Twin Disc gears as
noted in Table 2. Check and, if necessary, replenish
the oil supply in the transmission.
If the unit is equipped with a fuel valve, close it. Fill
Make a visual inspection of the turbocharger for leaks
and excessive vibration. Stop the engine immediately
if there is an unusual noise in the turbocharger.
Avoid Unnecessary Engine Idling
During long engine idling periods, the engine coolant
Drain the cooling system if it is not protected with
antifreeze and freezing temperatures are expected.
temperature will fall below the normal operating
Leave the drains open. Open the raw water drains of a
range. The incomplete combustion of fuel in a cold
engine will cause crankcase dilution, formation of
heat exchanger cooling system.
lacquer or gummy deposits on the valves, pistons and
rings and rapid accumulation of sludge in the engine.
NOTE: When prolonged engine idling is
Check the oil level in the crankcase. Add oil, if
necessary, maintain at least 800 rpm.
necessary, to bring it to the proper level on the
Check and; if necessary, replenish the oil supply in the
1. Release the load and decrease the engine speed. Put
all shift levers in the neutral position.
Clean and check the engine thoroughly to make
2. Allow the engine to run at half speed or slower with
certain it will be ready for the next run.
no load for four or five minutes, then move the stop
lever to the stop position to shut down the engine.
Refer to Lubrication and Preventive Maintenance and
perform all of the daily maintenance operations. Also
perform the operations required for the number of
hours or miles the engine has been in operation.
Make the necessary adjustments and minor repairs to
correct difficulties which became apparent to the
If the engine does not stop after using the normal
operator during the last run.
stopping procedure, pull the "Emergency Stop" knob