2001 Mercury Mariner 50-60HP Factory Service Manual, Page 196Get this manual
EMISSIONS
CERTIFICATION LABEL: The certification label must be placed on each engine at the time of manufacture and must be replaced in the same location if damaged or removedShown below is typical certification label and is not representative of any one modelLabel shown below is not to scale; (shown at twice the normal size)
EMISSION CONTROL INFORMATION
THIS ENGINE CONFORMS TO 2001 CALIFORNIA AND U.SEPA EMISSION REGULATIONS FOR SPARK IGNITION MARINE ENGINES REFER TO OWNERS MANUAL FOR REQUIRED MAINTENANCEi IDLE SPEED (IN GEAR): 725 25 RPM 50 HP 995 cc FAMILY: 1M9XM.9952G0 FEL: 16.8 gkW-hr e
TIMING (IN DEGREES): NOT ADJUSTABLE JAN 2000 Spark Plug: NGK DPR6EA-9 Gap: 1.0 mm (0.035) Intake: 0.15 0.25 Exhaust: 0.25 0.35
Cold Valve Clearance (mm)
a-Family Example b-FEL: Represents (Mercury Marine) statement of the maximum emissions output for the engine family c-Timing specifications when adjustable d-Recommended spark plug for best engine performance e-Valve Clearance (Four Stroke engines only) f-Date of Manufacture g-Cubic Centimeter h-Engine Horsepower rating i-Idle Speed (In Gear) M9X M995 0