Mercury 8 Bigfoot 4-Stroke User Manual

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Welcome Aboard!
Proper care and maintenance is an important part in keeping your Mercury Product operating at peak efficiency
for maximum performance and economy. The enclosed Owner's Registration Card is your key to trouble‑free
family fun. Refer to your Operation and Maintenance Manual for full details of your warranty coverage.
Details of your nearest dealer can be found on www.marinepower.com where country maps and full contact
information are displayed.
Is your engine properly registered for warranty purpose? Please check on www.marinepower.com. If
necessary, please contact your local dealer.
Declaration of Conformity
This outboard motor’s serial number plate contains in the lower corner left hand corner either the CE mark
alone or the CE mark accompanied by a notified body number. This outboard motor manufactured by Mercury
Marine, Fond du Lac, WI, USA or Marine Power Europe Inc. Park Industriel, de Petit‑Rechain, Belgium
complies with the requirements of the following directives by meeting the associated standards, as amended:
If the CE mark is accompanied by a notified body number, the following Recreational Craft Directive applies:
Recreational Craft Directive: 2003/44/EC amending 94/25/EC
Owner's manual (A.2.5) ISO 10240
Handling characteristics (A.4) ISO 8665
Outboard engine starting (A.5.1.4) ISO 11547
Fuel tanks (A.5.2.2) ISO 13591; ISO 8469
General steering system ABYC P‑17
Exhaust emission requirements (B.2) ISO 8178
Owner's manual (B.4) ISO 8665
Noise emission levels (C.1) ISO 14509
The notified body responsible for surveillance of the quality system under Full Quality
Assurance Module H of Directive 2003/44/EC is:
Det Norske Veritas
Norway
Notified Body Number: 0575
If the CE mark is not accompanied by a notified body number, the following Recreational Craft Directive
language applies:
Recreational Craft Directive: 94/25/EC
Owner's manual (A.2.5) ISO 10240
Handling characteristics (A.4) ISO 8665
Outboard engine starting (A.5.1.4) ISO 11547
Fuel tanks (A.5.2.2) ISO 13591; ISO 8469
© 2005 Mercury Marine 8/9.9 & 9.9 Bigfoot 4-Stroke 90-10241060 1204

Mercury 8 Bigfoot 4-Stroke Specifications

General

Engine Type	4-Stroke
Cylinders	2
Starting System	Manual
Horsepower	8 HP
Displacement	209 cc
Shaft Length	20 in
Full Throttle RPM	5000 - 6000 RPM

Summary

Warranty Information

Transfer Of Warranty

How to transfer warranty to a new owner.

Warranty Registration United States And Canada

Process for registering warranty in US/Canada.

Warranty Registration Outside The United States And Canada

Process for registering warranty internationally.

General Information

Boater's Responsibilities

Operator's duties for safe operation.

Before Operating Your Outboard

Advice before starting operation.

Boat Horsepower Capacity

Warning about exceeding boat's max horsepower.

Installation

Installing Outboard

Step-by-step guide to installing the outboard.

Boat Transom Height Requirement

Specification for transom height alignment.

Installing Outboard on Transom

Detailed instructions for mounting on transom.

Features and Controls

Throttle Grip Friction Knob

Adjusts throttle resistance for speed setting.

Throttle Only Button

Disables gear shift control when outboard is in neutral.

Throttle Grip

Controls engine speed and shifting.

Operation

Pre-Starting Check List

Operator checks for safe navigation and procedures.

Operating In Freezing Temperatures

Procedure for operating in near or below freezing conditions.

Operating In Salt Water Or Polluted Water

Recommendations for flushing after use in salt/polluted water.

Maintenance

Outboard Care

Importance of periodic inspections and maintenance.

Selecting Replacement Parts for Your Outboard

Recommendation for using genuine Mercury parts.

EPA Emissions

Information on emission certification label and owner responsibility.

Troubleshooting

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

Possible causes for starter motor failure.

Engine Will Not Start

Common causes for engine not starting.

Engine Runs Erratically

Potential reasons for erratic engine performance.