Mercury 9.9 MH - User Manual

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.
© 2009 Mercury Marine 9.9/15/18 2 S (2-Stroke) 90-10263080 305

Mercury 9.9 MH Specifications

General

Starting System	Manual
Cylinders	2
Full Throttle RPM Range	5000-6000 RPM
Steering	Tiller
Horsepower	9.9 HP
Shaft Length	15 in
Weight	84 lbs
Fuel Type	Gasoline
Alternator Output	6 amp
Fuel Tank Capacity	3.2 gallons
Engine Type	4-stroke
Fuel Induction	Carburetor

Summary

Warranty Information

FourStroke Outboard Limited Warranty United States, Canada, Europe and Confederation of Independent States

Details the limited warranty coverage for specific geographical regions.

3 Year Limited Warranty Against Corrosion

Specifies the terms and conditions for the 3-year limited warranty against corrosion.

Warranty Coverage and Exclusions

Explains what is covered and excluded under the product's warranty.

General Information

Lanyard Stop Switch

Explains the function and use of the lanyard stop switch for safety.

Protecting People in the Water

Provides safety advice for operating near people in the water.

Impact with Underwater Hazards

Advises caution and speed control when operating in areas with potential underwater obstacles.

Installation

Installing Outboard

Provides instructions for mounting the outboard motor securely on the boat transom.

Battery Installation

Details the proper mounting and connection of the boat's battery.

Fuel and Oil

Fuel Recommendations

Specifies acceptable types and octane ratings of gasoline for the engine.

Oil Recommendation

Recommends NMMA certified TC-W3 2-Cycle oil for the engine.

Mixing Fuel and Oil

Provides the correct fuel and oil mixing ratios for operation and break-in.

Features & Controls

Shallow Water Operation

Provides instructions and precautions for operating the outboard in shallow water.

Trim Angle Adjustment

Details how to adjust the trim angle for optimal boat performance and stability.

Operation

Pre-Starting Check List

Lists essential checks to perform before starting the outboard engine.

Pre-Starting Instructions

Step-by-step guide for preparing the engine before starting.

Engine Break-in Procedure

Details the correct procedure for breaking in the engine for optimal performance.

Starting The Engine

Provides instructions for starting the outboard engine safely and correctly.

Gear Shifting

Maintenance

Inspection and Maintenance Schedule

Troubleshooting

Starter Motor Will Not Crank The Engine (Electric Start Models)

Engine Will Not Start

Engine Runs Erratically