GENERAL INFORMATION
Page 1C-2 90-857138R1 MAY 2000
Serial Number Location
The Outboard serial number is located on the lower starboard side of the engine block. A
serial number is also located on the top side of the swivel bracket.
19XX
XX
OGXXXXXX
XXXX
a
c
b
d
e
a
b
c
d
e
a-Serial Number
b-Model Year
c-Model Description
d-Year Manufactured
e-Certified Europe Insignia
Conditions Affecting Performance
Weather
ENGINE RPM
Rated hp
Summer hp
Horsepower Loss
Due to Atmosphere
Conditions
Secondary Loss Due to
Propeller Becoming To
Large for Summer
Horsepower
RPM Drop Due
to Weather
Rated RPM
It is a known fact that weather conditions exert a profound effect on power output of internal
combustion engines. Therefore, established horsepower ratings refer to the power that the
engine will produce at its rated rpm under a specific combination of weather conditions.
Corporations internationally have settled on adoption of I.S.O. (International Standards Or-
ganization) engine test standards, as set forth in I.S.O. 3046 standardizing the computation
of horsepower from data obtained on the dynamometer, correcting all values to the power
that the engine will produce at sea level, at 30% relative humidity at 77° F (25° C) tempera-
ture and a barometric pressure of 29.61 inches of mercury.
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