Mercury 250 XS OptiMax Operation, Maintenance & Installation Manual page 9

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Maintenance
Cleaning Care Recommendations.................................................................... 45
Power Package Care........................................................................................ 47
Replacement Parts for Your Power Package................................................... 47
EPA Emissions Regulations............................................................................. 47
Inspection and Maintenance Schedule............................................................. 48
Flushing the Cooling System (Powerhead)...................................................... 50
Flushing the Cooling System (Lower Unit)....................................................... 51
Top Cowl Removal and Installation.................................................................. 52
Fuel System...................................................................................................... 52
Steering Link Rod Fasteners............................................................................ 55
Fuses ............................................................................................................... 56
Corrosion Control Anodes................................................................................ 57
Spark Plug Inspection and Replacement.......................................................... 58
Battery Inspection ............................................................................................ 60
Charging System Fusible Link.......................................................................... 60
Replacing the Propeller.................................................................................... 61
Lubrication Points............................................................................................. 63
Single-Ram Trim System.................................................................................. 64
Three-Ram Trim System.................................................................................. 67
Gearcase Lubricant.......................................................................................... 70
Submerged Power Package............................................................................. 71
Storage Preparation.......................................................................................... 72
Protecting Internal Engine Components........................................................... 73
Protecting External Outboard Components...................................................... 74
Gearcase.......................................................................................................... 74
Positioning Outboard for Storage..................................................................... 74
Battery Storage................................................................................................. 74
Starter Motor Will Not Crank the Engine........................................................... 75
Engine Will Not Start......................................................................................... 75
Engine Runs Erratically.................................................................................... 75
Performance Loss............................................................................................. 76
Warning Horn Activates (With Power Loss)...................................................... 76
Warning Horn Activates (No Power Loss)........................................................ 76
Battery Will Not Hold Charge............................................................................ 77
vii
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