Mercury 300 XS OptiMax User Manual

MAINTENANCE
66 eng
EMISSION CERTIFICATION LABEL
An emission certification label, showing emission levels and engine
specifications directly related to emissions, is placed on the engine at the time
of manufacture.
a - Idle speed
b - Engine horsepower
c - Piston displacement
d - Engine power ‑ kilowatts
e - Date of manufacture
f - Family number
g - Regulated emission limit for the engine family
h - Regulated emission limit for the engine family
i - Recommended spark plug and gap
j - Percent of fuel line permeation
OWNER RESPONSIBILITY
The owner/operator is required to have routine engine maintenance performed
to maintain emission levels within prescribed certification standards.
The owner/operator is not to modify the engine in any manner that would alter
the horsepower or allow emission levels to exceed their predetermined factory
specifications.
Inspection and Maintenance Schedule
PRIOR TO EVERY USE
• Check that the lanyard stop switch stops the engine.
• Check the steering system for binding or loose components.
• Check the outboard for tightness on the transom.
• Check the propeller blades for damage.
• Visually inspect all hoses, clamps, fittings, tubing, sealing gaskets, and
mounting hardware for wear.
AFTER EACH SALTWATER OR POLLUTED WATER USE
• Flush all internal passages with fresh water.
SPARK PLUG:
GAP:
EMISSION CONTROL
INFORMATION
THIS ENGINE CONFORMS TO
EMISSION REGULATIONS FOR SPARK IGNITION MARINE ENGINES
CALIFORNIA AND U.S. EPA
REFER TO OWNERS MANUAL FOR REQUIRED MAINTENANCE,
SPECIFICATIONS, AND ADJUSTMENTS
IDLE SPEED (in gear):
FAMILY:
HC+NOx:FEL:
LOW PERM/HIGH PERM:
g/kWh
hp
L
e
d
c
b
a
f
g
h
i
HC+NOx:FEL:
g/kWh
hp
L
CO FEL:
g/kWh
kw
g/kWh
j
43210

Mercury 300 XS OptiMax Specifications

General

Brand	Mercury
Model	300 XS OptiMax
Category	Outboard Motor
Language	English