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SAFETY SHUTDOWN SWITCHES
CONTROL
PANEL
SAFETY SHUTDOWN SWITCHES
This engine is protected by three shutdown switches and
two fuses. Should a shutdown occur,
do not attempt to
restarl without finding and correcting the cause.
Refer to
the heading
Engine sliirts, runs and then shuts down
in the
ENGINE TROUBLESHOOTING
section of this manual.
OVERSPEED SWITCH
The overspeed
PC
board inside the control panel will shut
the engine down if the engine speed (RPM'S) exceeds the
operating speed required to run the generator. The oyerspeed
PC
board will reset itself once the engine shuts down.
FUSE
SWITCH
IM-r---MA,IN CIRCUIT
BREAKER
MAIN CIRCUIT BREAKER AC
The main circuit breaker at the control panel will
automatically disconnect the AC power if there is an
electtical overload.
This circuit breaker should be manually switched off
when servicing the engine/generator to ensure that no
power is coming into the boat. The breaker is reset
manually.
FUSES
A lOA fuse located on the side of the control panel protects
the
DC
electtical wiring. If an electtical overload occurs the
fuse will blow and shut the engine down.
An 20A in-line fuse protects the battery charging circuit.
If
this fuse fails, the engine will continue to run but the battery
will not be charging.
lOA FUSE
~
-=t) )
lP»=
20A FUSE
BATTERY CHARGING
EXHAUST TEMPERATURE SWITCH
An
exhaust temperature switch located at the base of the
exhaust elbow sensors an excessive exhaust temperature
(an inadequate supply of cooling water). A temperature
aboye 2400 F will shut the engine down. Inspect the cooling
system, water pump, pump belt, seacock, water strainer,
water hoses, etc. This switch will reset itself when the
exhaust cools.
TEMPERATURE
SWITCH
LOW DlL SWITCH
EXHAUST
ELBOW
Located just to the right' of the oil filter, this switch sensors
the engine's oil pressure if the oil pressure falls to below
5
psi. This switch will shut the engine down. Check the
angle of operation, dipstick oilleyel and oil filter. The switch
will reset itself.
LOW OIL PRESSURE SWITCH
. HIGH WATER TEMPERATURE SWITCH
(Fresh Water Cooled Model)
A high water temperature switch is located at the thermostat
housing. Normally closed, this switch, should the fresh water
coolant's operating temperature reach approximately 210"1'
(99'C), will open and shut the engine down. This switch
resets itself at 195"1' (107'C) .
........,~==-
THERMqSTAT
HOUSING
OC()OL,qNTRECOVERY TANK
Engines & Generators
10
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