EMISSIONS
Page 3C-10 90-857046R1 NOVEMBER 2001
Service Replacement Certification Label
IMPORTANT: By federal law, it is required that all 1998 and newer Mercury Marine out-
boards have a visible and legible emission certification label. If this label is missing
or damaged, contact Mercury Marine Service for replacement if appropriate.
Removal
Remove all remaining pieces of the damaged or illegible label. Do not install new label over
the old label. Use a suitable solvent to remove any traces of the old label adhesive from the
display location.
Date Code Identification
Cut and remove a “V” notch through the month of engine manufacture before installing the
new label. The month of manufacture can be found on the old label. If the label is missing
or the date code illegible, contact Mercury Marine Technical Service for assis-
tance.
EMISSION CONTROL
INFORMATION
THIS ENGINE CONFORMS TO 2001 CALIFORNIA AND U.S. EPA
EMISSION REGULATIONS FOR SPARK IGNITION MARINE ENGINES
IDLE SPEED (IN GEAR): 800 ± 25 RPM
TIMING (IN DEGREES): NOT ADJUSTABLE
Spark Plug: NGK DPR6EA-9
Gap: 0.9 mm (0.035″)
Intake: 0.15 – 0.25
REFER TO OWNERS MANUAL FOR REQUIRED MAINTENANCE.
FAMILY: WM9XM.747220
FEL: 32.20 g/kW-hr
30 HP
747 cc
Cold Valve Clearance (mm)
Exhaust: 0.25 – 0.35
JAN FEB MAR APR MAY JUNE JULY AUG SEP OCT NOV DEC
a
b
a-“V” Notch
b-Month of Manufacture
Installation
Install the label on a clean surface in the original factory location.
Decal Location:
Model Service Part No. Location on Engine
2002 Merc/Mar 747 cc 37-883927AO2 Flywheel/Rewind Cover
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