Mercury 4.3 MPI SeaCore User Manual

Page ii 90-8M0113859 eng DECEMBER 2015
Section 3 - Specifications
Fuel Requirements................................................................. 38
Fuel Ratings...................................................................... 38
Using Reformulated (Oxygenated) Gasoline (USA Only). 38
Gasoline Containing Alcohol............................................. 38
Bu16 Butanol Fuel Blends.......................................... 38
Methanol and Ethanol Fuel Blends............................. 38
Engine Oil............................................................................... 38
Engine Specifications............................................................. 39
4.3 MPI ECT ................................................................... 39
5.0 MPI ECT and SeaCore 5.0 ECT............................... 40
Fluid Specifications................................................................. 40
Engine............................................................................. 40
Alpha Sterndrive.............................................................. 41
Bravo Sterndrives............................................................ 41
Power‑Assisted Steering and Power Trim Fluids............ 41
Approved Power‑Assisted Steering Fluids.................. 41
Approved Power Trim Fluids....................................... 41
Section 4 - Maintenance
Additional Operation Instructions for Axius Systems ............. 44
Owner/Operator Responsibilities............................................ 44
Dealer Responsibilities........................................................... 44
Maintenance........................................................................... 44
Do‑It‑Yourself Maintenance Suggestions............................... 44
Inspection............................................................................... 45
Maintenance Schedule—Sterndrive Models.......................... 45
Routine Maintenance...................................................... 45
Scheduled Maintenance.................................................. 46
Engine Oil............................................................................... 47
Checking......................................................................... 47
Oil Level—Overfilled................................................... 47
Filling............................................................................... 48
Changing Oil and Filter.................................................... 48
Engine Oil Drain Pump.................................................... 48
Changing Filter................................................................ 49
Power Steering Fluid.............................................................. 50
Checking........................................................................... 50
Filling................................................................................ 50
Changing.......................................................................... 50
Engine Coolant....................................................................... 50
Checking......................................................................... 50
Filling............................................................................... 51
Changing ........................................................................ 52
Alpha Sterndrive Gear Lube................................................... 52
Checking........................................................................... 52
Filling................................................................................ 53
Changing.......................................................................... 53
Bravo Sterndrive Gear Lube................................................... 55
Checking......................................................................... 55
Filling............................................................................... 55
Changing......................................................................... 55
Power Trim Fluid.................................................................... 57
Checking........................................................................... 57
Filling................................................................................ 57
Changing.......................................................................... 57
Battery.................................................................................... 58
Auxiliary Batteries............................................................ 58
Multiple EFI Engine Battery Precautions......................... 58
Cleaning the Flame Arrestor................................................... 58
Positive Crankcase Ventilation (PCV) Valve.................... 60
Changing..................................................................... 61
Cleaning the IAC Muffler........................................................ 61
Water‑Separating Fuel Filter (MPI)......................................... 62
Water‑Separating Fuel Filter........................................... 62
Gen II Models.................................................................. 62
Removal...................................................................... 62
Installation................................................................... 62
Gen III Models................................................................. 63
Removal...................................................................... 63
Installation................................................................... 63
Lubrication.............................................................................. 64
Steering System.............................................................. 64
Throttle Cable.................................................................. 65
Shift Plate Control Cable Lubrication.............................. 66
Shift Cable ‑ DTS............................................................ 66
Driveshaft U‑joint Splines and O‑Rings (Sterndrive Unit
Removed)........................................................................ 66
Engine Coupler................................................................ 67
Driveshaft Extension Models........................................... 67
Propellers............................................................................... 67
Propeller Repair.............................................................. 67
Alpha or Bravo One Propeller Removal.......................... 68
Alpha or Bravo One Propeller Installation....................... 68
Bravo Two Propeller Removal......................................... 69
Bravo Two Propeller Installation...................................... 69
Bravo Three Propeller Removal...................................... 70
Bravo Three Propeller Installation................................... 71
Serpentine Drive Belt.............................................................. 72
Checking........................................................................... 72
Replacing Belt and/or Adjusting Tension.......................... 73
Corrosion Protection............................................................... 74
Corrosion Information...................................................... 74
Maintaining Ground Circuit Continuity............................. 74
Sterndrive Corrosion Protection Components................. 74
MerCathode System Battery Requirements.................... 76
MerCathode Theory of Operation.................................... 76
Power Package Exterior Surfaces................................... 77
Boat Bottom Care............................................................ 77
Painting Your Power Package......................................... 77
Sterndrive Surface Care.................................................. 78
Important Information About Flushing Procedures................. 79
Flushing Attachments....................................................... 79
Flushing the Power Package (Alpha)..................................... 79
Flushing Attachments....................................................... 80
Sterndrive Water Pickups................................................. 80
Flushing the Power Package (Bravo)..................................... 81
General Information......................................................... 81
Flushing the Power Package........................................... 81
Flushing Attachments..................................................81
Sterndrive Water Pickups............................................82
Alternative Water Pickups........................................... 83

Mercury 4.3 MPI SeaCore Specifications

General

Brand	Mercury
Model	4.3 MPI SeaCore
Category	Engine
Language	English