Mercury 4.2 Diesel Operation & Maintenance Manual page 38

Table of Contents
Owner and Operator Responsibilities................................... 32
Dealer Responsibilities......................................................... 32
Maintenance......................................................................... 32
Do-It-Yourself Maintenance Suggestions............................. 32
Inspection............................................................................. 32
Maintenance Schedule......................................................... 33
Routine Maintenance..................................................... 33
Scheduled Maintenance................................................ 34
Engine Oil............................................................................. 35
Checking........................................................................ 35
Filling............................................................................. 35
Changing Oil and Filter.................................................. 36
ZF Marine Transmission Fluid.............................................. 37
Check Fluid Level.......................................................... 37
Add Fluid........................................................................ 38
Change Fluid................................................................. 38
Technodrive Transmission Fluid........................................... 40
Check Fluid.................................................................... 40
Add Fluid........................................................................ 41
Change Fluid................................................................. 41
Engine Coolant..................................................................... 43
Check Coolant............................................................... 43
Filling............................................................................. 44
Changing....................................................................... 45
2.8 Air Filter.......................................................................... 45
Removal......................................................................... 45
Inspection...................................................................... 45
Installation...................................................................... 45
4.2 Air Filter.......................................................................... 45
Removal......................................................................... 45
Inspection...................................................................... 46
Installation...................................................................... 47
Water-Separating Fuel Filter................................................ 47
Draining......................................................................... 48
Replacing....................................................................... 48
90-8M0113988 DECEMBER 2015
eng
Section 4 - Maintenance
Fuel System.......................................................................... 51
Seawater System................................................................. 52
Replacing the Engine Coolant in the Closed-Cooling System
.............................................................................................. 58
Corrosion Protection............................................................. 60
Lubrication............................................................................ 63
Drive Belts............................................................................ 64
Battery.................................................................................. 66
Filling............................................................................. 50
Priming........................................................................... 51
Filling (Bleeding)............................................................ 51
Fuel Tank Cleaning and Flushing.................................. 52
Draining the Seawater System...................................... 52
Checking the Seawater Pickups.................................... 54
Cleaning the Seawater Strainer, if Equipped................. 54
Flushing the Seawater System-Inboard Models.......... 56
With the Boat out of the Water .............................. 56
With the Boat in the Water .................................... 57
Engine Seawater Pump Inspection................................ 58
Draining the Closed-Cooling System............................. 58
Filling the Closed-Cooling System................................. 59
General Information....................................................... 60
Engine Corrosion Protection Components.................... 60
Removal ................................................................ 60
Cleaning and Inspection ........................................ 61
Installation ............................................................. 62
Antifouling Paint............................................................. 63
Throttle Cable................................................................ 63
Shift Cable..................................................................... 63
Drive Belt....................................................................... 64
Serpentine Belt.............................................................. 64
Inspection .............................................................. 64
Replacement ......................................................... 65
Battery Precautions for Multiple Engines ...................... 66
Section 4 - Maintenance
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