MerCruiser Tow Sports 5.7 MPI User Manual

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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.

Patrick C. Mackey

President ‑ Mercury Marine, Fond du Lac, WI USA

Questions and Answers:

C
Christina MeyersAug 16, 2025
Why won't my MerCruiser Tow Sports 5.7 MPI Engine starter motor crank, or cranks slowly?
- J
  James FernandezAug 16, 2025
  If the starter motor won't crank the engine, or cranks slowly, here are a few things to check: * Ensure the battery switch is turned on. * Make sure the remote control is in the neutral position. * Check and reset the main power circuit breaker or replace the fuse. Also, check the 5 amp fuse on the power harness connected to the battery, and replace it if necessary. * Inspect all electrical connections and wires (especially battery cables) for looseness or dirt. Clean and tighten any faulty connections. * Test the battery and charge if necessary, or replace it if it's bad. * Verify that the lanyard stop switch is not activated.

MerCruiser Tow Sports 5.7 MPI Specifications

General

Engine Type	V8
Alternator	65 Amp
Compression Ratio	9.4:1
Fuel Requirement	87 Octane Minimum
Displacement	5.7 L (350 CID)
Fuel System	Multi-Port Injection (MPI)
Cooling System	Water-cooled
Max RPM	5000 RPM
Ignition System	Distributorless Ignition System (DTS)