Mercury 4.3 MPI SeaCore

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Section 6 - Troubleshooting

Notes:

Page 110 90-8M0113859 eng DECEMBER 2015

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Table of Contents5
Additional Operation Instructions for Axius Systems10
Identification10
Engine Serial Number10
Alpha Sterndrive Serial Number10
Alpha Transom Serial Number11
Bravo Sterndrive Serial Number and Identification11
Bravo Transom Serial Number12
Lanyard Stop Switch13
Keep the Lanyard Stop Switch and Lanyard Cord in Good Operating Condition14
Instrumentation14
Vesselview14
Smartcraft Digital Instruments14
System Link Digital Instruments15
Remote Controls (Non-DTS Models)16
Remote Control Features-Non-DTS16
Gear Shifting16
Remote Controls (DTS Models)17
Remote Controls17
Panel Mount Features17
DTS Slim Binnacle Single Handle Console Features and Operation17
Special Digital Throttle and Shift (DTS) Features18
Dual-Handle Electronic Remote Control (ERC)-Operation and Adjustment19
Dual-Handle Electronic Remote Control (ERC)- Operation and Adjustment19
Operation19
Adjustment19
Special Digital Throttle and Shift (DTS) Features20
Dock21
Throttle Only21
Lever22
Sync22
Transfer (Boats Equipped with Dual Helms)23
Helm Transfer23
Zero Effort Features23
Power Trim24
Single Engine Trim/Trailer25
Dual Engine Trim/Trailer25
Electrical System Overload Protection25
Visual and Audio Warning Systems29
Service Engine Light and OBD-M MIL Kit29
Testing the OBD-M Malfunction Indicator Lamp (MIL). 21 Audio Warning System29
Testing the OBD-M Malfunction Indicator Lamp (MIL)29
Audio Warning System29
Caution30
Critical30
Nonconfigured Alarm-DTS Only30
Testing the Audio Warning System30
Guardian Strategy30
Additional Operation Instructions for Axius Systems32
Safe Boating Recommendations32
Carbon Monoxide Exposure33
Be Alert to Carbon Monoxide Poisoning33
Stay Clear of Exhaust Areas33
Good Ventilation33
Poor Ventilation34
Basic Boat Operation (Non-DTS Models)34
Launching and Boat Operation34
Operation Chart34
Starting and Stopping the Engine35
Starting the Engine35
Stopping the Engine35
Starting the Engine after It Has Been Stopped While in Gear36
Throttle Only Operation36
Trailering the Boat36
Freezing Temperature Operation36
Drain Plug and Bilge Pump36
Basic Boat Operation (DTS Models)36
Launching and Boat Operation36
Operation Chart36
Section 2 - on the Water36
Starting and Stopping the Engine37
Starting the Engine37
Stopping the Engine38
Throttle Only Operation38
Trailering the Boat38
Freezing Temperature Operation38
Drain Plug and Bilge Pump39
Protecting People in the Water39
While You Are Cruising39
While Boat Is Stationary39
High-Speed and High-Performance Operation39
Passenger Safety in Pontoon Boats and Deck Boats39
Boats Having an Open Front Deck39
Boats with Front-Mounted, Raised Pedestal Fishing Seats40
Wave and Wake Jumping40
Impact with Underwater Hazards40
Drive Unit Impact Protection41
Operating with Low Water Inlets in Shallow Water41
Conditions Affecting Operation41
Weight Distribution (Passengers and Gear) Inside the Boat41
The Bottom of the Boat42
Cavitation42
Ventilation42
Elevation and Climate42
Propeller Selection42
General Information42
Engine RPM Limiter43
Getting Started43
20-Hour Break-In Period43
After the Break-In Period43
End of First Season Checkup43
Fuel Requirements46
Fuel Ratings46
Using Reformulated (Oxygenated) Gasoline (USA Only)46
Gasoline Containing Alcohol46
Bu16 Butanol Fuel Blends46
Methanol and Ethanol Fuel Blends46
Engine Oil46
Engine Specifications47
4.3 Mpi Ect47
MPI ECT and Seacore 5.0 ECT48
Fluid Specifications48
Engine48
Alpha Sterndrive49
Bravo Sterndrives49
Power-Assisted Steering and Power Trim Fluids49
Approved Power-Assisted Steering Fluids49
Approved Power Trim Fluids49
Additional Operation Instructions for Axius Systems52
Owner/Operator Responsibilities52
Dealer Responsibilities52
Maintenance52
Do-It-Yourself Maintenance Suggestions52
Inspection53
Maintenance Schedule-Sterndrive Models53
Routine Maintenance53
Scheduled Maintenance54
Engine Oil55
Checking55
Oil Level-Overfilled55
Filling56
Changing Oil and Filter56
Engine Oil Drain Pump56
Changing Filter57
Power Steering Fluid58
Checking58
Filling58
Changing58
Engine Coolant58
Filling59
Changing60
Alpha Sterndrive Gear Lube60
Checking60
Filling61
Changing61
Bravo Sterndrive Gear Lube63
Checking63
Filling63
Changing63
Power Trim Fluid65
Checking65
Filling65
Changing65
Battery66
Auxiliary Batteries66
Multiple EFI Engine Battery Precautions66
Cleaning the Flame Arrestor66
Positive Crankcase Ventilation (PCV) Valve68
Changing69
Cleaning the IAC Muffler69
Section 4 - Maintenance69
Water-Separating Fuel Filter (MPI)70
Water-Separating Fuel Filter70
Gen II Models70
Removal70
Installation70
Gen III Models71
Removal71
Installation71
Lubrication72
Steering System72
Throttle Cable73
Shift Plate Control Cable Lubrication74
Shift Cable - DTS74
Driveshaft U-Joint Splines and O-Rings (Sterndrive Unit Removed)74
Engine Coupler75
Driveshaft Extension Models75
Propellers75
Propeller Repair75
Alpha or Bravo One Propeller Removal76
Alpha or Bravo One Propeller Installation76
Bravo Two Propeller Removal77
Bravo Two Propeller Installation77
Bravo Three Propeller Removal78
Bravo Three Propeller Installation79
Serpentine Drive Belt80
Checking80
Replacing Belt And/Or Adjusting Tension81
Corrosion Protection82
Corrosion Information82
Maintaining Ground Circuit Continuity82
Sterndrive Corrosion Protection Components82
Mercathode System Battery Requirements84
Mercathode Theory of Operation84
Power Package Exterior Surfaces85
Boat Bottom Care85
Painting Your Power Package85
Sterndrive Surface Care86
Important Information about Flushing Procedures87
Flushing Attachments87
Flushing the Power Package (Alpha)87
Flushing Attachments88
Sterndrive Water Pickups88
Flushing the Power Package (Bravo)89
General Information89
Flushing the Power Package89
Flushing Attachments89
Sterndrive Water Pickups90
Alternative Water Pickups91
Seacore Power Package Flushing Procedure92
Models Using the Sterndrive Water Pickup92
Cold Weather or Extended Storage98
Reformulated (Oxygenated) Gasolines (U.S.A. Only)98
Fuel Containing Alcohol98
Preparing Power Package for Storage-MPI Models98
Special Fuel MIX99
Engine and Fuel System Preparation99
Draining the Seawater System100
Drain System Identification100
Air Actuated Single-Point Drain System100
Manual Single-Point Drain System, Seawater Cooled Models101
4.3 ECT Single-Point Drain System with Plug101
Three-Point Manual Drain System, Seawater Cooled102
Multipoint Drain (MPD) System102
Air Actuated Single-Point Drain System103
Boat in the Water103
Boat out of the Water104
Manual Single-Point Drain System (Alpha)106
Boat in the Water106
Boat out of the Water107
Three-Point Manual Drain System-Seawater Cooled109
Boat in the Water109
Boat out of the Water109
Draining Water from the Gen III Cool Fuel Module110
Battery Storage110
Recommissioning the Power Package110
Diagnosing EFI Problems114
Diagnosing DTS Problems114
Additional Operation Instructions for Axius Systems114
Engine Guardian System114
Troubleshooting Charts114
Starter Motor will Not Crank Engine, or Cranks Slowly114
Engine will Not Start or Is Hard to Start114
Engine Runs Rough, Misses, or Backfires115
Poor Performance115
Excessive Engine Temperature115
Insufficient Engine Temperature115
Low Engine Oil Pressure116
Battery will Not Recharge116
Remote Control Is Difficult to Move, Has Excessive Play, or Makes Unusual Sounds116
Steering Wheel Jerks or Is Difficult to Turn116
Power Trim Does Not Operate (Motor Does Not Operate)116
Power Trim Does Not Operate (Motor Operates but Sterndrive Unit Does Not Move)117
Section 7 - Customer Assistance Information119
Owner Service Assistance120
Local Repair Service120
Service Away from Home120
Stolen Power Package120
Attention Required after Submersion120
Replacement Service Parts120
Parts and Accessories Inquiries120
Resolving a Problem120
Contact Information for Mercury Marine Customer Service121
Customer Service Literature121
English Language121
Other Languages122
Ordering Literature122
United States and Canada122
Outside the United States and Canada122
Section 8 - Checklists123
Predelivery Inspection (PDI)124
Customer Delivery Inspection (CDI)125
Section 9 - Maintenance Log127
Scheduled Maintenance Log128
Vessel Maintenance Notes129

Mercury 4.3 MPI SeaCore

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