Page ii 90-8M0113925 eng DECEMBER 2015
Section 4 - Maintenance
Owner/Operator Responsibilities............................................ 34
Dealer Responsibilities........................................................... 34
Maintenance........................................................................... 34
Do‑It‑Yourself Maintenance Suggestions............................... 34
Inspection............................................................................... 35
MerCruiser Gas Inboard Inspection and Maintenance
Schedule................................................................................. 35
Daily Checks..................................................................... 35
After Each Use.................................................................. 35
Weekly Checks................................................................. 35
20 Hour Break In............................................................... 35
Annually or 100 Hours...................................................... 35
Three Years or 300 Hours................................................ 36
Five Years or 500 Hours................................................... 36
Engine Oil............................................................................... 36
Checking......................................................................... 36
Oil Level—Overfilled................................................... 37
Filling............................................................................... 37
Changing Oil and Filter.................................................... 38
Oil Removal with Drain Pump......................................... 38
Changing the Oil Filter..................................................... 38
Transmission Fluid................................................................. 39
Checking While Engine is Warm...................................... 39
Checking While Engine is Cold......................................... 39
Transmission Fluid............................................................ 39
Changing.......................................................................... 39
Closed Cooling System.......................................................... 40
Coolant Requirement...................................................... 40
Checking Coolant Level.................................................. 40
.................................................................................... 40
Filling the Closed Cooling System................................... 40
Draining........................................................................... 41
Cleaning.......................................................................... 41
Battery.................................................................................... 41
Multiple EFI Engine Battery Precautions......................... 41
Cleaning the Flame Arrestor................................................... 42
Changing the Positive Crankcase Ventilation Valve (PCV).... 43
Water‑Separating Fuel Filter.................................................. 43
Removal and Installation................................................. 44
Removal...................................................................... 44
Installation................................................................... 44
Serpentine Drive Belt.............................................................. 45
Inspection........................................................................ 45
Checking......................................................................... 45
Replacing........................................................................ 46
Flushing the Seawater System—Inboard Models.................. 47
The Boat Out of the Water—Inboard Models.................. 47
The Boat in the Water—Inboard Models......................... 48
Section 5 - Storage
Cold Weather or Extended Storage........................................ 50
Reformulated (Oxygenated) Gasolines (U.S.A. Only)..... 50
Fuel Containing Alcohol.................................................. 50
Preparing Power Package for Storage—MPI Models..... 50
Special Fuel Mix.......................................................... 51
Engine and Fuel System Preparation......................... 51
Draining the Seawater System............................................... 52
Drain System Identification.............................................. 52
Air‑Actuated Single‑Point Drain System..................... 52
Manual Drain System.................................................. 53
Air‑Actuated Single‑Point Drain System.......................... 53
Boat in the Water........................................................ 53
Boat Out of the Water................................................. 54
Manual Drain System...................................................... 56
Boat in the Water........................................................ 56
Boat Out of the Water................................................. 56
Draining Water from the Cool Fuel Module..................... 57
Battery Storage....................................................................... 57
Recommissioning the Power Package................................... 57
Section 6 - Troubleshooting
Diagnosing EFI Problems....................................................... 60
Diagnosing DTS Problems..................................................... 60
Engine Guardian System........................................................ 60
Troubleshooting Charts.......................................................... 60
Starter Motor Will Not Crank Engine, or Cranks Slowly.. 60
Engine Will Not Start or Is Hard to Start.......................... 60
Engine Runs Rough, Misses, or Backfires...................... 61
Poor Performance........................................................... 61
Excessive Engine Temperature...................................... 61
Insufficient Engine Temperature..................................... 61
Low Engine Oil Pressure................................................. 62
Battery Will Not Recharge............................................... 62
Remote Control Is Difficult to Move or Makes Unusual
Sounds............................................................................ 62
Steering Wheel Jerks or Is Difficult to Turn..................... 62
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