EMISSIONS
90-826883R2 JUNE 1998 Page 3B-7
JAN FEB MAR APR MAY JUNE JULY AUG SEP OCT NOV DEC
Emission Control
Information
1999
PART # 37-856984 5
This engine conforms to 1999 Model Year
U.S. EPA regulations for marine SI engines.
Idle Speed (in gear): 750 RPM
Timing: Idle: 6° BTDC WOT: 25° BTDC
Standard Spark Plug: NGK BP8H-N-10
Gap: .040″
Valve Clearance (Cold) mm
Intake: N/A Exhaust: N/A
Refer to Owners Manual
for required maintenance.
Family: WM9XM.0024210
FEL: 199.92 GM/KW-HR
400
cc
20-25 HP
e
b
a
k
j
i
d
f
g
h
c
a- Spark Ignition (SI)
b- Cubic Centimeter
c- Model year of engine and production decal part number
d- Idle Speed (In Gear)
e- Timing specifications when adjustable
f - Recommended spark plug for best engine performance
g- Valve Clearance (Four Stroke engines only)
h- Engine Horsepower rating
i - Month of production (Boxing month will punched)
j - FEL: Represents (Mercury Marine) statement of the maximum emissions out-
put for the engine family
k- Family example
W M9X M. 0024 2 1 0
Model Year
W=1998
X=1999
Manufacturer
Mercury Marine
Regulation
M=Marine
Displacement
Liter
Cubic Inch
Application
1=PWC
2=OB
Technology type
1=Existing
2=New
Unspecified
Decal Location:
Model Production Part No. Service Part No. Location on Engine
1998 Merc/Mar 12,24 ci
(20-25 H.P.)
37-855211 5 37-855577 5 Inside Top Cowl
1999 Merc/Mar 12,24 ci
(20-25 H.P.)
37-856984 5 37-856985 5 Inside Top Cowl
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