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Yanmar 2GM20(F)(V)(C) - Cautions During Operation

Yanmar 2GM20(F)(V)(C)
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3. Operation
Use the clutch handle to change from
FORWARD
to
NEUTRAL (boat stopped)
to
REVERSE.
Shi
fting
th
e c
lutch
wh
i
le
operating
at
h
ig
h s
pe
ed
or
not
pushing
the
handle f
ull
y
into
position
{half
c
lut
ch)
will
re
s
utt
in
damage
to
cl
utch
pa
rt
s and
abnormal
wear.
1.
Before using the clutch, be sure
to
move the governor handle to a l
ow
speed position
(1
000 rpm or less). Move
the governor handle to a high speed
position after completing clutch
operation.
r:r:l
2.
When changing between FORWARD
liil
and
REVERSE,
bring the clutch to
NEUTRAL and pause before slowly
shifting to the desired position. Do
not
shift abruptly from FORWARD to
REVERSE
or
vice versa.
3. Move the clutch handle accurately and
fully Into the FORWARD, NEUTRAL,
and REVERSE positions.
3.3.4 Ca
uti
ons
During
Operation
Always be on the lookout for problems
during engine operation.
Pay particular attention
to
the following:
{1) Is s
uffi
ci
ent
water
being
discharged
fr
om
the
s
eawater
outlet
pipe?
If
the discharge is small, stop the engine
Immediately, identify the cause and repair.
{2)
Is the
ex
haust c
olour
normal?
The continuous emission
of
black exhaust
indicates engine overloading. This
shortens the engine's life and should be
avoided.
30
{3)
Are
there
abnormal
vi
bration
s or
noise?
Do
not
operate at speeds which produce
violent vibrations. Depending on t
he
hull
structure, engine and hull resonance may
suddenly become great at a certain engine
speed range, causing heavy vibrations.
Avoid operation in this speed
range. If you
hear any abnormal sounds, stop the
engine and inspect.
Elec
tr
ic
Operation
{4)
Alarm
buzzer
so
unds
during
operation
.
if the alarm buzzer sounds during opera-
ti
on, lower the engine speed immediately,
check the warning lamps, and
stop
the
engine for repairs.
(5)
Is
there
wat
er, o
il
,
or
gas
leakage
,
or
are
there
any
loo
se
bolts?
Check the engine room periodically for any
problems.
(6)
Is
there
s
uff
i
cient
fuel
oil
in
the
fu
el
oil
tank
?
Replenish fuel oil in advance
to
avoid
running out of fuel during operatlon.
(7)
When opera
ting
the
engine
at
low
spe
ed for l
on
g periods of
time
, race
th
e
engin
e on
ce
every
2 ho
urs
.
Note: Racing the Engine
With the clutch in NEUTRAL, accel-
erate from the
low speed position
to
the high speed position and repeat
this process about 5 times. This is
done
to
clean out carbon from the
cylinders and the fuel injection
valve.
Neglecting to race the engine
will
result in
poor
exhaust colour and
reduce engine performance.

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