MerCruiser Axius 350, Axius 350 MAG, Axius 377 Instruction Manual
The MerCruiser Axius 350 MAG is a powerful and reliable sterndrive engine designed for recreational boating. It offers a range of features and capabilities, including electronic throttle and shift (DTS) for precise control, joystick maneuvering for effortless docking, and a variety of safety features, such as engine guardian and audio warning systems, to ensure a safe and enjoyable boating experience.
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© 2011 Mercury Marine Axius & Axius SeaCore 350, 377 Models with Emissions Control *8M0053363* 90-8M0053363 1110
NOTE: The following applies to CE marked products only.
Declaration of Conformance – Mercury MerCruiser
This sterndrive or inboard engine when installed in accordance to Mercury MerCruisers’ instructions complies with the
requirements of the following directives by meeting the associated standards, as amended:
Recreational Craft Directive 94/25/EC; 2003/44/EC
Applicable Requirement Standards Applied
Owner’s manual (A.2.5) ISO 10240
Openings in Hull, Deck and superstructure (A.3.4) ISO 9093‑1; ISO 9093‑2
Handling characteristics (A.4) ISO 8665
Inboard Engine (A.5.1.1) ISO 15584; ISO 10088; ISO 7840; ISO 10133
Fuel System (A.5.2) ISO 10088; ISO 7840; ISO 8469
Electrical System (A.5.3) ISO 10133; ISO 8846
Steering system (A.5.4) Applicable portions of: ISO 10592, ISO 8848 and ABYC
P‑17
Exhaust emission requirements (B.2) ISO 8178
Owner’s manual (B.4) ISO 8665
Noise emission levels (C.1) ISO 14509
Ignition‑protected equipment (Annex II) ISO 8846; SAE J1171; SAE J1191; SAE J 2031
Mercury MerCruiser declares that our sterndrive or inboard engines without integral exhaust, when installed in a
recreational craft, in accordance with the manufacturers supplied instructions, will meet the exhaust emissions
requirements of the directive mentioned above. This engine must not be put into service until the recreational craft in which
it is to be installed has been declared in conformity, if so required, with the relevant provision of the directive.
Electromagnetic Compatibility Directive 89/336/EC, 92/31/EEC and 93/68/EEC
Generic emission standard EN 50081‑1
Generic immunity standard EN 50082‑1
Vehicles, boats and internal combustion engine driven
devices ‑ Radio disturbance characteristics SAE J551 (CISPR 12)
Electrostatic discharge testing EN 61000‑6‑2; EN 61000‑4‑2; EN61000‑4‑3
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
This declaration is issued under the sole responsibility of Mercury Marine and Mercury MerCruiser.
Kevin Grodzki
President ‑ Mercury MerCruiser, Stillwater, OK, USA
Regulatory contact:
Regulations and Product Safety Department
Mercury Marine
W6250 W. Pioneer Road
Fond du Lac, WI 54936
USA
Identification Record
Please record the following information:
NOTE: The following applies to CE marked products only.
Declaration of Conformance – Mercury MerCruiser
This sterndrive or inboard engine when installed in accordance to Mercury MerCruisers’ instructions complies with the
requirements of the following directives by meeting the associated standards, as amended:
Recreational Craft Directive 94/25/EC; 2003/44/EC
Applicable Requirement Standards Applied
Owner’s manual (A.2.5) ISO 10240
Openings in Hull, Deck and superstructure (A.3.4) ISO 9093‑1; ISO 9093‑2
Handling characteristics (A.4) ISO 8665
Inboard Engine (A.5.1.1) ISO 15584; ISO 10088; ISO 7840; ISO 10133
Fuel System (A.5.2) ISO 10088; ISO 7840; ISO 8469
Electrical System (A.5.3) ISO 10133; ISO 8846
Steering system (A.5.4) Applicable portions of: ISO 10592, ISO 8848 and ABYC
P‑17
Exhaust emission requirements (B.2) ISO 8178
Owner’s manual (B.4) ISO 8665
Noise emission levels (C.1) ISO 14509
Ignition‑protected equipment (Annex II) ISO 8846; SAE J1171; SAE J1191; SAE J 2031
Mercury MerCruiser declares that our sterndrive or inboard engines without integral exhaust, when installed in a
recreational craft, in accordance with the manufacturers supplied instructions, will meet the exhaust emissions
requirements of the directive mentioned above. This engine must not be put into service until the recreational craft in which
it is to be installed has been declared in conformity, if so required, with the relevant provision of the directive.
Electromagnetic Compatibility Directive 89/336/EC, 92/31/EEC and 93/68/EEC
Generic emission standard EN 50081‑1
Generic immunity standard EN 50082‑1
Vehicles, boats and internal combustion engine driven
devices ‑ Radio disturbance characteristics SAE J551 (CISPR 12)
Electrostatic discharge testing EN 61000‑6‑2; EN 61000‑4‑2; EN61000‑4‑3
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
This declaration is issued under the sole responsibility of Mercury Marine and Mercury MerCruiser.
Kevin Grodzki
President ‑ Mercury MerCruiser, Stillwater, OK, USA
Regulatory contact:
Regulations and Product Safety Department
Mercury Marine
W6250 W. Pioneer Road
Fond du Lac, WI 54936
USA
Identification Record
Please record the following information:
Engine Model and Horsepower Engine Serial Number
Transom Assembly Serial Number (Sterndrive) Gear Ratio Sterndrive Unit Serial Number
Transmission Model (Inboard) Gear Ratio Transmission Serial Number
Propeller Number Pitch Diameter
Hull Identification Number (HIN) Purchase Date
Boat Manufacturer Boat Model Length
The serial numbers are the manufacturer’s keys to numerous engineering details that apply to your Mercury MerCruiser® power
package. When contacting your Authorized Mercury MerCruiser Dealer about service, always specify model and serial numbers.
The description and specifications contained herein were in effect at the time this guide was approved for printing. Mercury Marine,
whose policy is one of continuous improvement, reserves the right to discontinue models at any time, or to change specifications
or designs, without notice and without incurring obligation.
Mercury Marine, Fond du Lac, Wisconsin, U.S.A. Printed in U.S.A.
© 2009, Mercury Marine
Mercury, Mercury Marine, MerCruiser, Mercury MerCruiser, Mercury Racing, Mercury Precision Parts, Mercury Propellers,
Mariner, Quicksilver, #1 On The Water, Alpha, Bravo, Bravo Two, Pro Max, OptiMax, Sport‑Jet, K‑Planes, MerCathode,
RideGuide, SmartCraft, Zero Effort, M with Waves logo, Mercury with Waves logo, VesselView, and SmartCraft logo are all
registered trademarks of Brunswick Corporation. Mercury Product Protection logo is a registered service mark of Brunswick
Corporation.
Welcome
You have selected one of the finest marine power packages available. It incorporates numerous design features to assure
operating ease and durability.
With proper care and maintenance, you will thoroughly enjoy using this product for many boating seasons. To ensure maximum
performance and carefree use, we ask that you thoroughly read this manual.
The Operation, Maintenance and Warranty Manual contains specific instructions for using and maintaining your product. We
suggest that this manual remain with the product for ready reference whenever you are on the water.
Thank you for purchasing one of our Mercury MerCruiser products. We sincerely hope your boating will be pleasant!
Mercury MerCruiser
Warranty Message
The product you have purchased comes with a limited warranty from Mercury Marine; the terms of the warranty are set forth in
the Warranty Sections of this manual. The warranty statement contains a description of what is covered, what is not covered, the
duration of coverage, how to best obtain warranty coverage, important disclaimers and limitations of damages and other related
information. Please review this important information.
Mercury Marine products are designed and manufactured to comply with our own high quality standards, applicable industry
standards and regulations, as well as certain emissions regulations. At Mercury Marine every engine is operated and tested before
it is boxed for shipment to make sure that the product is ready for use. In addition, certain Mercury Marine products are tested in
a controlled and monitored environment, for up to 10 hours of engine run time, in order to verify and make a record of compliance
with applicable standards and regulations. All Mercury Marine product, sold as new, receives the applicable limited warranty
coverage, whether the engine participated in one of the test programs described above or not.
Read This Manual Thoroughly
IMPORTANT: If you don’t understand any portion of this manual, contact your dealer for a demonstration of actual starting and
operating procedures.
Transom Assembly Serial Number (Sterndrive) Gear Ratio Sterndrive Unit Serial Number
Transmission Model (Inboard) Gear Ratio Transmission Serial Number
Propeller Number Pitch Diameter
Hull Identification Number (HIN) Purchase Date
Boat Manufacturer Boat Model Length
The serial numbers are the manufacturer’s keys to numerous engineering details that apply to your Mercury MerCruiser® power
package. When contacting your Authorized Mercury MerCruiser Dealer about service, always specify model and serial numbers.
The description and specifications contained herein were in effect at the time this guide was approved for printing. Mercury Marine,
whose policy is one of continuous improvement, reserves the right to discontinue models at any time, or to change specifications
or designs, without notice and without incurring obligation.
Mercury Marine, Fond du Lac, Wisconsin, U.S.A. Printed in U.S.A.
© 2009, Mercury Marine
Mercury, Mercury Marine, MerCruiser, Mercury MerCruiser, Mercury Racing, Mercury Precision Parts, Mercury Propellers,
Mariner, Quicksilver, #1 On The Water, Alpha, Bravo, Bravo Two, Pro Max, OptiMax, Sport‑Jet, K‑Planes, MerCathode,
RideGuide, SmartCraft, Zero Effort, M with Waves logo, Mercury with Waves logo, VesselView, and SmartCraft logo are all
registered trademarks of Brunswick Corporation. Mercury Product Protection logo is a registered service mark of Brunswick
Corporation.
Welcome
You have selected one of the finest marine power packages available. It incorporates numerous design features to assure
operating ease and durability.
With proper care and maintenance, you will thoroughly enjoy using this product for many boating seasons. To ensure maximum
performance and carefree use, we ask that you thoroughly read this manual.
The Operation, Maintenance and Warranty Manual contains specific instructions for using and maintaining your product. We
suggest that this manual remain with the product for ready reference whenever you are on the water.
Thank you for purchasing one of our Mercury MerCruiser products. We sincerely hope your boating will be pleasant!
Mercury MerCruiser
Warranty Message
The product you have purchased comes with a limited warranty from Mercury Marine; the terms of the warranty are set forth in
the Warranty Sections of this manual. The warranty statement contains a description of what is covered, what is not covered, the
duration of coverage, how to best obtain warranty coverage, important disclaimers and limitations of damages and other related
information. Please review this important information.
Mercury Marine products are designed and manufactured to comply with our own high quality standards, applicable industry
standards and regulations, as well as certain emissions regulations. At Mercury Marine every engine is operated and tested before
it is boxed for shipment to make sure that the product is ready for use. In addition, certain Mercury Marine products are tested in
a controlled and monitored environment, for up to 10 hours of engine run time, in order to verify and make a record of compliance
with applicable standards and regulations. All Mercury Marine product, sold as new, receives the applicable limited warranty
coverage, whether the engine participated in one of the test programs described above or not.
Read This Manual Thoroughly
IMPORTANT: If you don’t understand any portion of this manual, contact your dealer for a demonstration of actual starting and
operating procedures.
Notice
Throughout this publication, and on your power package, dangers, warnings, cautions, and notices, accompanied by the
International Hazard Symbol ! , may be used to alert the installer/user to special instructions concerning a particular service or
operation that may be hazardous if performed incorrectly or carelessly. Observe them carefully.
These Safety Alerts alone cannot eliminate the hazards that they signal. Strict compliance with these special instructions while
performing the service, plus common sense operation, are major accident prevention measures.
! DANGER
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
! WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
! CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, could result in engine or major component failure.
IMPORTANT: Identifies information essential to the successful completion of the task.
NOTE: Indicates information that helps in the understanding of a particular step or action.
! WARNING
The operator (driver) is responsible for the correct and safe operation of the boat, the equipment aboard and the safety of all
occupants aboard. We strongly recommend that the operator read this Operation, Maintenance and Warranty Manual and
thoroughly understand the operational instructions for the power package and all related accessories before the boat is used.
! WARNING
The engine exhaust from this product contains chemicals known to the state of California to cause cancer, birth defects or other
reproductive harm.
Throughout this publication, and on your power package, dangers, warnings, cautions, and notices, accompanied by the
International Hazard Symbol ! , may be used to alert the installer/user to special instructions concerning a particular service or
operation that may be hazardous if performed incorrectly or carelessly. Observe them carefully.
These Safety Alerts alone cannot eliminate the hazards that they signal. Strict compliance with these special instructions while
performing the service, plus common sense operation, are major accident prevention measures.
! DANGER
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
! WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
! CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, could result in engine or major component failure.
IMPORTANT: Identifies information essential to the successful completion of the task.
NOTE: Indicates information that helps in the understanding of a particular step or action.
! WARNING
The operator (driver) is responsible for the correct and safe operation of the boat, the equipment aboard and the safety of all
occupants aboard. We strongly recommend that the operator read this Operation, Maintenance and Warranty Manual and
thoroughly understand the operational instructions for the power package and all related accessories before the boat is used.
! WARNING
The engine exhaust from this product contains chemicals known to the state of California to cause cancer, birth defects or other
reproductive harm.
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Key Features
- Electronic Throttle & Shift (DTS)
- Joystick Maneuvering
- Engine Guardian
- Audio Warning System
- SeaCore Corrosion Protection
- Axius Premier (optional)
- Skyhook (optional)
- Track Waypoint (optional)
- Cruise Control
- Multiple EFI Engines
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Frequently Answers and Questions
What is the purpose of the Engine Guardian system?
The Engine Guardian system monitors various engine parameters and provides alerts if any potential issues arise, such as low oil pressure or high engine temperature, preventing damage and ensuring safe operation.
How does the Skyhook feature work?
Skyhook uses GPS and advanced technology to keep the boat stationary in a specific location, making it ideal for fishing, swimming, or simply enjoying the scenery without drifting.
What are the benefits of the DTS system?
The DTS system provides precise throttle and shift control, offering smoother acceleration, improved fuel efficiency, and enhanced maneuverability.
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