Mercury 80 User Manual

Maintenance
Outboard Care.................................................................................................. 62
EPA Emissions Regulations............................................................................. 62
Inspection and Maintenance Schedule............................................................. 63
Maintenance Schedule Decal (75–115)............................................................ 66
Flushing the Cooling System............................................................................ 67
Top Cowl Removal and Installation.................................................................. 68
Cleaning Care for Top and Bottom Cowls........................................................ 69
Flywheel Cover Removal and Installation......................................................... 70
Cleaning Care for the Powerhead (Saltwater Use)........................................... 70
Battery Inspection ............................................................................................ 71
Fuel System...................................................................................................... 71
Corrosion Control Anode.................................................................................. 73
Propeller Replacement..................................................................................... 74
Spark Plug Inspection and Replacement..........................................................77
Fuse Replacement............................................................................................79
Lubrication Points............................................................................................. 80
Checking Power Trim Fluid...............................................................................83
Changing Engine Oil ........................................................................................ 83
Gearcase Lubrication........................................................................................86
Storage
Storage Preparation..........................................................................................88
Protecting External Outboard Components...................................................... 88
Protecting Internal Engine Components........................................................... 89
Gearcase.......................................................................................................... 89
Positioning Outboard for Storage..................................................................... 89
Battery Storage................................................................................................. 89
Troubleshooting
Starter Motor Will Not Crank the Engine........................................................... 90
Engine Will Not Start.........................................................................................90
Engine Runs Erratically.................................................................................... 90
Performance Loss.............................................................................................91
Battery Will Not Hold Charge............................................................................ 91
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Mercury 80 Specifications

General

Steering	Remote
Shaft Length	20 in (508 mm)
Gear Ratio	2.07:1
Horsepower	80 hp
Full Throttle RPM Range	5000-6000 RPM
Bore x Stroke	3.15 x 3.15 in (80 x 80 mm)