Mercury 30 2-Stroke User Manual

eng i
Thank You
for your purchase of one of the finest outboards available.
You have made a sound investment in boating pleasure.
Your outboard has been manufactured by Mercury Marine, a
world leader in marine technology and outboard
manufacturing since 1939. These years of experience have
been committed to the goal of producing the finest quality
products. This led to Mercury Marine's reputation for strict
quality control, excellence, durability, lasting performance
and being the best at providing after the sale support.
Please read this manual carefully before operating your
outboard. This manual has been prepared to assist you in
the operation, safe use and care of your outboard.
All of us at Mercury Marine took pride in building your
outboard and wish you many years of happy and safe
boating.
Again, thank you for your confidence in Mercury Marine.
EPA Emissions Regulations
Outboards sold by Mercury Marine in the United States are
certified to the United States Environmental Protection
Agency as conforming to the requirements of the regulations
for the control of air pollution from new outboard motors.
This certification is contingent on certain adjustments being
set to factory standards. For this reason, the factory
procedure for servicing the product must be strictly followed
and, wherever practicable, returned to the original intent of
the design. Maintenance, replacement, or repair of the
emission control devices and systems may be
performed by any marine engine repair establishment or
individual.
Engines are labeled with an Emission Control Information
decal as permanent evidence of EPA certification.
!
WARNING
The engine exhaust from this product contains chemicals
known to the state of California to cause cancer, birth
defects or other reproductive harm.
© 2012 Mercury Marine 25/30 2-Stroke 90-8M0060784 711

Mercury 30 2-Stroke Specifications

General

Engine Type	2-Stroke
Horsepower	30 hp
Cylinders	2
Fuel System	Carbureted
Starting System	Manual or Electric
Steering	Tiller
Full Throttle RPM	5000-5500
Fuel Induction	Loop-charged
Shaft Length	15", 20"

Summary

Warranty Information

Outboard Limited Warranty

Covers what Mercury Marine warrants for new outboard and jet products.

3 Year Limited Warranty Against Corrosion

Specific warranty coverage for corrosion damage over a three-year period.

General Information

Lanyard Stop Switch

Explanation of the lanyard stop switch's purpose and operation for engine safety.

Installation

Installing the Remote Control Device (Right‑Hand Steering)

Steps for positioning and installing the remote control box.

Battery Installation

Guidelines for mounting and connecting the boat battery for engine starting.

Fuel & Oil

Fuel Recommendations

Guidelines on recommended gasoline types, octane ratings, and usage.

Oil Recommendation

Mixing Fuel and Oil

Instructions and ratios for mixing gasoline and oil for the engine.

Operation

Pre‑Starting Check List

Starting the Engine

Detailed instructions for starting the outboard engine using various methods.

Gear Shifting

Stopping the Engine

Maintenance

Inspection and Maintenance Schedule

Schedule of regular checks and maintenance tasks for the outboard.

Flushing the Cooling System

Propeller Replacement

Spark Plug Inspection and Replacement

Gearcase Lubrication

Troubleshooting

Engine Will Not Start

Common reasons and fixes for the engine failing to start.

Engine Runs Erratically

Performance Loss