Mercury MerCruiser Horizon 8.2 ECT User Manual

Page ii 90-8M0061999 eng MAY 2012
Elevation and Climate..................................................... 41
Getting Started....................................................................... 42
20‑Hour Break‑In Period................................................. 42
After Break‑In Period....................................................... 42
End of First Season Checkup.......................................... 42
Section 4 - Specifications
Cruising RPM......................................................................... 44
Fuel Requirements................................................................. 44
Fuel Ratings...................................................................... 44
Using Reformulated (Oxygenated) Gasoline (USA Only). 44
Gasoline Containing Alcohol............................................. 44
Engine Oil............................................................................... 45
Engine Specifications............................................................. 45
Horizon 8.2 ECT and 8.2 H.O. ECT................................ 45
Fluid Specifications................................................................. 46
Engine............................................................................. 46
Transmission................................................................... 46
Section 5 - Maintenance
Owner/Operator Responsibilities............................................ 48
Dealer Responsibilities........................................................... 48
Maintenance........................................................................... 48
Do‑It‑Yourself Maintenance Suggestions............................... 48
Inspection............................................................................... 49
Maintenance Schedule—Inboard Models............................... 49
Routine Maintenance...................................................... 49
Scheduled Maintenance.................................................. 49
Maintenance Log.................................................................... 50
Engine Oil............................................................................... 51
Checking......................................................................... 51
Filling............................................................................... 51
Changing Oil and Filter.................................................... 52
Engine Oil Drain Pump.................................................... 52
Changing the Oil Filter..................................................... 53
Transmission Fluid................................................................. 53
Checking While Engine is Warm...................................... 53
Checking While Engine is Cold......................................... 54
Transmission Fluid............................................................ 54
Changing.......................................................................... 54
Closed Cooling System.......................................................... 54
Coolant Requirement...................................................... 54
Checking Coolant Level.................................................. 55
.................................................................................... 55
Filling the Closed Cooling System................................... 55
Draining........................................................................... 56
Cleaning.......................................................................... 56
Battery.................................................................................... 56
Multiple EFI Engine Battery Precautions......................... 56
Cleaning the Flame Arrester................................................... 57
Changing the Positive Crankcase Ventilation Valve (PCV).... 57
Water‑Separating Fuel Filter.................................................. 58
GEN III Models................................................................ 59
Removal...................................................................... 59
Installation................................................................... 59
Serpentine Drive Belt.............................................................. 60
Inspection........................................................................ 60
Checking......................................................................... 60
Replacing........................................................................ 61
Flushing the Seawater System—Inboard Models.................. 62
The Boat Out of the Water—Inboard Models.................. 62
The Boat in the Water—Inboard Models......................... 63
Section 6 - Storage
Cold Weather or Extended Storage........................................ 66
Preparing Power Package for Storage............................ 66
Engine and Fuel System Preparation......................... 66
Draining the Seawater System............................................... 67
Drain System Identification.............................................. 68
Air‑Actuated Single‑Point Drain System..................... 68
Manual Drain System.................................................. 68
Air‑Actuated Single‑Point Drain System.......................... 68
Boat in the Water........................................................ 68
Boat Out of the Water................................................. 70
Manual Drain System...................................................... 71
Boat in the Water........................................................ 71
Boat Out of the Water................................................. 72
Draining Water from the Cool Fuel Module..................... 72
Battery Storage....................................................................... 73
Recommissioning the Power Package................................... 73
Section 7 - Troubleshooting
Diagnosing EFI Problems....................................................... 76
Diagnosing DTS Problems..................................................... 76
Engine Guardian System........................................................ 76
Troubleshooting Charts.......................................................... 76
Starter Motor Will Not Crank Engine, or Cranks Slowly.. 76
Engine Will Not Start or Is Hard to Start.......................... 76
Engine Runs Rough, Misses, or Backfires...................... 77
Poor Performance........................................................... 77
Excessive Engine Temperature...................................... 77
Insufficient Engine Temperature..................................... 77
Low Engine Oil Pressure................................................. 78
Battery Will Not Recharge............................................... 78

Mercury MerCruiser Horizon 8.2 ECT Specifications

General

Brand	Mercury
Model	MerCruiser Horizon 8.2 ECT
Category	Engine
Language	English