BREAK-IN
PROCEDURE
THE
FIRST
50
HOURS
Although
your
engine
has experienced a
minimum
of
one
hour
of
test
operations
to ensure accurate assemhly and
proper operation
of
all systems.
hrcak~in
lime is required.
The
service life
of
your
engine
is
dependent upon how the
engine is
operated
and serviced
during
its initial
50
hours
of
usc.
Your
new
engine requires approximately 50 hours of initial
conditioning
operation
to hreak
in
cach
moving
part
in
order
to maximize the
performance
and service life
of
the engine.
Perform this conditioning carefully. keeping
in
mind
the
fol-
lowing:
1.
Start the engine
according
to the Starting Procedure
sec-
tion in this
manual;
run the
engine
at fast idle while
checking
that all
systems
(raw
water
pump, oil pressure,
battery
charging)
arc functioning.
2. Allow the
engine
to
warm
up (preferably
by
running at fast
idle) until the
water
temperature
gauge
moves
into the
130
o
-J40°F range.
3.
While using the vessel, run the engine at varying
engine
rpms for the first 25 hours.
4. Avoid rapid
acceleration,
especially with a cold engine.
S.
Usc caulion nol 10
overload
the engine. The presence
of
a
gray or
black
exhaust,
and the inahility of the engine 10
reach its full rated rpm,
arc
signs
of
an overload.
6. During the next 25 hours, the engine may be
operated
at
varying
engine
rpms, with short runs at full rated rpm.
Avoid
prolonged
idling during this break-in period.
9
Breaking-in a new engine hasically involves seating the pis-
ton rings
10
the cylinder walls. This cannot be accomplished
hy
long periods
of
running at iulc, nor hy early running at
full rpm. Idle running
may
glaze the
eylinuer
walls. resulting
in
excessive oil
consumption
and smoky operation.
Excessive
speed
or
heavy over-loading. especially with a
cold engine.
may
cause
scoring
of
the cylinder walls. produc-
ing
similar
results. Operate the engine
in
moderation during
the
50-hour
break-in period.
(Don',
baby the engine_ bu!
do
not abuse it.)
NOTE:
Allemptillg to reduce idle speed helow the minimum
shown may
product' wisiahle ellgine operatioll and stalling.
NOTE:
The propeller should he
eithc!r
2 or 3 Node.
It
should
allow the
enRine to
rf!ach
iiS
maximum rated rpm at full open
throttle undenvay ill forward gear to ensure the ami/ahility
of
rated horsepower whell Ilet'ded.
NOTE:
See the
TRANSMISSION
section
of
this manual jor
hreak-ill illformation
Oil
your transmissio!l.
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