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MerCruiser QSD 2.0 - User Manual

MerCruiser QSD 2.0
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© 2011 Mercury Marine QSD 2.0 Diesel Engine Sterndrive Models
*8M0057081*
90-8M0057081 311
Declaration of Conformance—Cummins MerCruiser Diesel
This sterndrive or inboard engine when installed in accordance with Cummins MerCruiser Diesel 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
Handling characteristics (A.4) ISO 8665
Inboard engine (A.5.1.1) ISO 15584; ISO 10088; ISO 7840; ISO 10133
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) (sterndrive CE marked
products only)
ISO 14509
Cummins MerCruiser Diesel declares that our sterndrive or inboard engines without integral exhaust, when installed in a
recreational craft in accordance with the manufacturer's 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
For specific information regarding exhaust or noise emissions and power declaration, please refer to the Declaration of
Conformity supplied with each Cummins MerCruiser Diesel engine.
This declaration is issued under the sole responsibility of Cummins MerCruiser Diesel.
Jim Kahlenbeck
Director of Engineering—Cummins MerCruiser Diesel, Charleston, South Carolina U.S.A.
Regulatory contact:
Engineering—Marine Emissions
Cummins MerCruiser Diesel
4500 Leeds Avenue
Charleston, South Carolina 29405
USA
(843) 745-1610
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

Table of Contents

Questions and Answers

  • S
    Sabrina LeeJul 28, 2025
    How to troubleshoot poor performance in a MerCruiser QSD 2.0?
    • M
      Michael WestJul 28, 2025
      Poor performance in your MerCruiser Engine can be attributed to several factors: the throttle not being fully open, the trim limiter being engaged, a damaged or improper propeller, excessive bilge water, an overloaded or improperly distributed boat, a fouled or damaged boat bottom, or an electronic fuel system fault. Inspect the throttle cable and linkages, trim the sterndrive below the trim limit, reduce load or redistribute it more evenly, and clean or repair the boat bottom as necessary.
  • J
    jsolisAug 3, 2025
    Why is my MerCruiser Engine hard to start?
    • G
      Gloria WaltersAug 3, 2025
      Your MerCruiser Engine might be hard to start due to several reasons. It could be a simple issue like the lanyard stop switch being activated, an improper starting procedure, an empty fuel tank, or a closed fuel shut-off valve. Other potential causes include a throttle not operating properly, a faulty electrical stop circuit, clogged fuel filters, stale or contaminated fuel, a kinked or clogged fuel/tank vent line, air in the fuel injection system, faulty wire connections or an electronic fuel system fault. Check these areas to diagnose the problem.
  • G
    gina17Aug 9, 2025
    What to do if my MerCruiser Engine starter motor will not crank, or cranks slowly?
    • J
      johnsonkimberlyAug 9, 2025
      If the starter motor won't crank the engine or cranks slowly, check the following: Ensure the battery switch is turned on, the remote control is in the neutral position, and the circuit breaker isn't open or the fuse blown. Also, inspect for loose or dirty electrical connections (especially battery cables) and damaged wiring. Clean and tighten any faulty connections. Finally, test the battery and replace it if necessary.
  • J
    jamesgreenAug 15, 2025
    Why is my MerCruiser QSD 2.0 Engine running rough and backfiring?
    • T
      Taylor HernandezAug 15, 2025
      If your MerCruiser Engine is running rough, missing, or backfiring, the possible causes include: the throttle not operating properly, idle speed being too low, clogged fuel or air filters, stale or contaminated fuel, a kinked or clogged fuel line or fuel tank vent line, air in the fuel system, or a faulty electronic fuel system. If the fuel is contaminated, drain the tank and fill it with fresh fuel. Replace kinked lines or blow out lines with compressed air to remove any obstruction. You can also replace the air filters, and purge the fuel injection system.
  • B
    browntinaAug 21, 2025
    What causes excessive temperature in a MerCruiser Engine?
    • J
      Jeremy NguyenAug 21, 2025
      Excessive engine temperature in your MerCruiser Engine can stem from several causes. Check if the water inlet or seacock is closed and ensure it is open. Inspect the drive belt for looseness or poor condition, replacing or adjusting as necessary. Look for obstructions in the seawater pickups or sea strainer and remove them. Also, inspect the seawater inlet hose for kinks and correct its position to prevent restrictions. Replace the hose with a wire reinforced design if an improperly designed hose is collapsing on the inlet side of the seawater pump. Check the coolant level and add coolant if it is low.

Summary

Section 1 - Warranty

Warranty Information

Details on registering the product and warranty confirmation procedures.

Warranty Policy

Covers warranty coverage details, duration, high output rating, and conditions for claims.

Limited Warranty Against Corrosion (Worldwide)

Specifics on corrosion warranty, including what's covered, duration, and conditions.

How to Obtain Warranty Coverage

Explains the procedure for making warranty claims and requirements.

Section 2 - Getting to Know Your Power Package

Identification

Details on locating and understanding serial number decals and data plates.

Features And Controls

Details important controls like emergency stop, lanyard stop switch, and remote controls.

Instrumentation

Explains digital gauges and other instruments like VesselView for monitoring.

Engine Monitoring Features

Covers audio warning systems, VesselView, and tachometer displays for engine status.

Section 3 - On the Water

Safe Boating Suggestions

Provides recommendations for safe boating practices and equipment.

Starting, Shifting, and Stopping

Explains the SmartStart system and procedures for starting, shifting, and stopping.

Impact with Underwater Hazards

Advises on reducing speed and proceeding with caution in areas with potential underwater obstacles.

Getting Started

Outlines initial break-in procedures for new engines and sterndrives.

Section 4 - Specifications

Fuel Requirements

Details on required diesel fuel grades, cetane rating, and sulphur content.

Coolant (Antifreeze)

Information on using the correct type and mixture of coolant for the cooling system.

Engine Oil

Recommendations for engine oil type, rating, and specific products for optimal performance.

Engine Specifications

Lists key specifications for the QSD 2.0 engine, including type, displacement, and ratings.

Section 5 - Maintenance

Owner and Operator Responsibilities

Outlines the owner's duties regarding safety checks, lubrication, and maintenance.

Maintenance Schedules-Alpha and Bravo Models

Provides routine and scheduled maintenance tasks for Alpha and Bravo sterndrive models.

Engine Oil

Details engine oil specifications, checking levels, and changing oil and filter.

Seawater System

Important procedures for maintaining the engine's seawater cooling system.

Corrosion Protection

Explains the effects of galvanic corrosion and protection methods.

Propellers

Procedures for removing and installing Alpha and Bravo propellers.

Drive Belts

Inspection and replacement guidelines for drive belts on the QSD 2.0 engine.

Section 6 - Storage

Cold‑Weather, Seasonal, and Extended Storage

Outlines precautions for storing the power package in various temperature and duration scenarios.

Seasonal Storage Instructions

Steps for preparing the power package for seasonal storage, including fluid changes.

Recommissioning

Steps for preparing the power package for use after storage, including checks and fluid replenishment.

Section 7 - Troubleshooting

Diagnosing Electronically Controlled Fuel System Problems

Guidance on using service tools and ECM codes for diagnosing fuel system issues.

Excessive Engine Temperature

Identifies causes and remedies for engine overheating issues.

Low Engine Oil Pressure

Explains possible causes and remedies for low engine oil pressure.

Power Trim does not Operate (Electric Motor Operates but Sterndrive does not Move)

Troubleshooting steps when the power trim electric motor runs but the sterndrive doesn't move.

Section 8 - Customer Assistance Information

Owner Service Assistance

Guidance on obtaining service, including local repair and service away from home.

Resolving a Problem

Steps to follow when experiencing issues with the product, including contacting dealership and distributor.

Customer Service Literature

Information on obtaining manuals and literature in English and other languages.

MerCruiser QSD 2.0 Specifications

General IconGeneral
Displacement2.0 L
Cylinders4
Power Output150 hp
Fuel SystemCommon Rail Direct Injection
Engine TypeIn-line

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