2. Product explanation
2.4
Major
Servicing
Parts
Name
of
part
De
co
mpression
lever
Fuel
filter
Fuel feed
pump
,
Priming
lever
Function
xhaust valve and releases the pressure for manual starting. Opens
thee
Removes d
internal elem
ust and water from fuel. Drain the filter periodically. The
ent (filter) should be changed periodically.
-
the fuel injection pump. Moving the priming
Fe
ed fuel to
lever
up
and
is used
to
b
down feeds the fuel. When there is
no
fuel, the priming lever
leed air from the fuel system.
Filler
port
(engine) Filler port fo r
eng1ne
lube oil.
----
Filler
port
(marine gear) Filler port fo r marine gear lube oil.
Lube
oil
filter
Filters fine m
etal fragments and carbon from the lube oil.
Filtered lube
---1--
oil is
dis
tributed to the engine's moving parts.
Cooling
Wat
er
System
Seawater
cooling
Anticorrosion
zinc
Fresh
water
cooling
Fresh water
pump
Fresh water coolmg
Fill
er
cap
wo types
of
cooling systems: direct seawater cooling There are t
fresh water cooling.
and
er pump feeds seawater. The flow is controlled automatically The seawat
by a thermo
stat which measures the temperature during operation.
area
of
the seawater cooling system is prone to electrical
he anticorrosion zinc is
Installed in the cylinder block and
/o
r
The metal
corrosion. T
d to prevent
th
i
s.
The anticorrosion zinc is Itself reduced over
ctrical corrosion, so
It
must be
re
placed at fixed intervals
ompletely consumed
In
order
to
ensure that the metal area
of
r cooling system remains fully protected.
cylinder hea
time by ele
before
It is c
the seawate
o cooling systems: fresh water and seawater. There are tw
The fresh wa
The fresh w
water pump
ter pump is run
by
the alternator and the V-belt.
ater in the fresh water cooler is fed
to
the engine by the fresh
. The
cooling fresh water returns to the
eng1ne
after it is
cooled with seawater in the f
re
sh
water cooler.
on the cooling water tank covers the water supply port. The
ressure regulating valve. When the cooling water temp. rises,
rises inside the fresh water cooler.
The filler cap
cap has a p
the pressure
__
____
__:__
Subt
ank
Fresh
water
pump
Intake
air
silencer
Name
plate
Starter
Alternator
16
e regulating valve releases vapor and hot water overflow to The pressur
the subtank
onnects the
filler cap a
nd
subtank. Vapor and hot water The hose c
discharged
engine stop
tank also
dr
back from th
to
the subtank
re
turn there
to
the cooling water. When the
s and coo
li
ng
water cool
s,
the pressure
In
the cooling water
ops very low. The
fi
ll
er cap valve then opens to send water
e subtank. This
min1mizes
cooling water consumption.
gal water pump circulates fresh cooling water inside the The centrifu
engine. The
pump is on
pump and alternator are dnven by the V-belt. The fresh water
engines using fresh water cooling.
This is the a
and reduces
----1--
lr Intake silencer. The silencer guards against dirt in the air
the noise
of
air intake.
s are provided on the engine and the marine gear and have Name plate
the model, s
---l---
erial number and other data.
Starter moto r for the engine. Powered by the battery.
Rotates by b
elt drive, generates electricity and charges the battery.
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