Page ii 90-8M0113924 eng DECEMBER 2015
End of First Season Checkup.......................................... 37
Section 3 - Specifications
Fuel Requirements................................................................. 40
Fuel Ratings...................................................................... 40
Using Reformulated (Oxygenated) Gasoline (USA Only). 40
Gasoline Containing Alcohol............................................. 40
Bu16 Butanol Fuel Blends.......................................... 40
Methanol and Ethanol Fuel Blends............................. 40
Engine Specifications............................................................. 40
8.2 MAG, 8.2 MAG H.O. – Including SeaCore Models.... 40
Engine Oil............................................................................... 41
Fluid Specifications................................................................. 42
Engine............................................................................. 42
Bravo Sterndrives............................................................ 42
Power‑Assisted Steering and Power Trim Fluids............ 42
Approved Power‑Assisted Steering Fluids.................. 42
Approved Power Trim Fluids....................................... 43
Section 4 - Maintenance
Additional Operation Instructions for Axius Systems ............. 46
Owner/Operator Responsibilities............................................ 46
Dealer Responsibilities........................................................... 46
Maintenance........................................................................... 46
Do‑It‑Yourself Maintenance Suggestions............................... 46
Inspection............................................................................... 47
MerCruiser Gas Sterndrive Inspection and Maintenance
Schedule................................................................................. 47
Daily Checks..................................................................... 47
After Each Use.................................................................. 47
Weekly Checks................................................................. 47
Every Two Months or 50 Hours........................................ 47
Annually or 100 Hours...................................................... 47
Three Years or 300 Hours................................................ 48
Five Years or 500 Hours................................................... 48
Engine Oil............................................................................... 48
Checking..................................................................... 48
Filling........................................................................... 49
Engine Oil and Filter........................................................ 49
Oil Removal with Drain Pump......................................... 50
Changing the Oil Filter..................................................... 50
Power‑Assisted Steering Fluid............................................... 51
Checking......................................................................... 51
Filling............................................................................... 51
Changing......................................................................... 51
Closed Cooling System.......................................................... 51
Coolant Requirement...................................................... 51
Checking Coolant Level.................................................. 52
.................................................................................... 52
Filling the Closed Cooling System................................... 52
Draining........................................................................... 53
Cleaning.......................................................................... 53
Sterndrive Gear Lube............................................................. 53
Checking......................................................................... 53
Filling............................................................................... 54
Changing......................................................................... 54
Power Trim Fluid.................................................................... 56
Checking........................................................................... 56
Filling................................................................................ 56
Changing.......................................................................... 56
Battery.................................................................................... 57
Multiple EFI Engine Battery Precautions......................... 57
Cleaning the Flame Arrestor................................................... 57
Cleaning the IAC Muffler (Non‑DTS Models Only)................. 58
Changing the Positive Crankcase Ventilation Valve (PCV).... 59
Water‑Separating Fuel Filter.................................................. 59
Removal and Installation................................................. 60
Removal...................................................................... 60
Installation................................................................... 60
Lubrication.............................................................................. 61
Steering System.............................................................. 61
Throttle Cable.................................................................. 62
Shift Plate Control Cable Lubrication.............................. 63
Shift Cable ‑ DTS............................................................ 63
Driveshaft U‑joint Splines and O‑Rings (Sterndrive Unit
Removed)........................................................................ 63
Engine Coupler................................................................ 64
Driveshaft Extension Models........................................... 64
Propellers............................................................................... 64
Propeller Repair.............................................................. 64
Bravo One Propeller Removal......................................... 65
Bravo One Propeller Installation...................................... 65
Bravo Two Propeller Removal......................................... 66
Bravo Two Propeller Installation...................................... 66
Bravo Three Propeller Removal...................................... 67
Bravo Three Propeller Installation................................... 68
Serpentine Drive Belt.............................................................. 69
Inspection........................................................................ 69
Checking......................................................................... 70
Replacing........................................................................ 70
Corrosion Protection............................................................... 71
Corrosion Information...................................................... 71
Maintaining Ground Circuit Continuity............................. 71
MerCathode System Battery Requirements.................... 71
MerCathode Theory of Operation.................................... 71
Anodes and MerCathode System Locations................... 72
Power Package Exterior Surfaces................................... 73
Boat Bottom Care............................................................ 74
Antifouling Paint.............................................................. 74
Sterndrive Surface Care.................................................. 75
Flushing the Seawater System—Sterndrive Models.............. 76
General Information—Bravo Sterndrive.......................... 76
Flushing Attachments..................................................76
Sterndrive Water Pickups............................................76
Boat Out of the Water—Bravo Sterndrive....................... 77
Boat in the Water—Bravo Sterndrive.............................. 77
Boat Out of the Water—Alternative Water Pickups......... 78
Boat in the Water—Alternative Water Pickups................ 78
SeaCore Power Package Flushing Procedure................ 79
Models Using the Sterndrive Water Pickup.................79