Mercury 125 OptiMax - Page 52

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FUEL AND OIL

42 eng

Do not completely fill the fuel tanks. Leave approximately 10% of

the tank volume unfilled. Fuel will expand in volume as its

temperature rises and can leak under pressure if the tank is

completely filled.

Main Page

Table of Contents7
Transfer of Warranty11
Warranty Registration United States and Canada11
Warranty Information11
Warranty Registration Outside the United States and Canada12
Optimax Outboard Limited Warranty United States, Canada, Europe, Confederation of Independent States, Middle-East and Africa13
Year Limited Warranty against Corrosion16
Warranty Coverage and Exclusions20
Boater's Responsibilities23
Before Operating Your Outboard23
General Information23
Boat Horsepower Capacity24
High-Speed and High-Performance Boat Operation24
Propeller Selection25
Outboard Remote Control Models28
Remote Steering Notice28
Lanyard Stop Switch29
Protecting People in the Water33
Passenger Safety Message - Pontoon Boats and Deck Boats34
Wave and Wake Jumping35
Impact with Underwater Hazards36
Exhaust Emissions38
Selecting Accessories for Your Outboard40
Safe Boating Suggestions40
Recording Serial Number42
Specifications43
Component Identification44
Transporting45
Trailering Boat/Outboard45
Fuel Recommendations46
Fuel and Oil46
Fuel Requirements48
Fuel Additives48
Avoiding Fuel Flow Restriction48
Low Permeation Fuel Hose Requirement48
Oil Recommendation48
Filling Oil Injection System49
Filling Fuel Tank51
Remote Control Features53
Features and Controls53
Warning System54
Power Trim and Tilt57
Trim Tab Adjustment61
Pre-Starting Check List62
Operating in Freezing Temperatures62
Operation62
Operating in Saltwater or Polluted Water63
Operating at High Elevations63
Setting Trim Angle While Running Engine at Idle Speed64
Engine Break-In Procedure64
Starting the Engine65
Gear Shifting68
Stopping the Engine69
Outboard Care70
EPA Emissions71
Inspection and Maintenance Schedule72
Flushing the Cooling System74
Top Cowl Removal and Installation75
Cleaning Care for Top Cowl76
Flywheel Cover Removal and Installation76
Side Panel Removal and Installation77
Fuel System78
Steering Link Rod Fasteners81
Fuse Replacement82
Corrosion Control Anode83
Battery Inspection84
Battery Information84
Propellers85
Spark Plug Inspection and Replacement89
Compressor Air Intake Filter90
Alternator Belt Inspection91
Lubrication Points91
Checking Power Trim Fluid93
Gearcase Lubrication94
Storage Preparation97
Fuel System97
Storage97
Protecting Internal Engine Components99
Protecting External Outboard Components99
Battery Storage100
Gearcase100
Positioning Outboard for Storage100
Starter Motor will Not Crank the Engine101
Engine will Not Start101
Troubleshooting101
Engine Runs Erratically102
Performance Loss102
Battery will Not Hold Charge102
Local Repair Service103
Service Away from Home103
Parts and Accessories Inquiries103
Service Assistance103
Owner Service Assistance103
Mercury Marine Service Offices104
Important Information106
Boat Horsepower Capacity106
Outboard Installation106
Start in Gear Protection107
Selecting Accessories for Your Outboard107
Fuel Tanks107
Low Permeation Fuel Hose Requirement107
Installation Specifications108
Lifting the Outboard108
Steering Cable - Starboard Side Routed Cable109
Determining Recommended Outboard Mounting Height111
Drilling Outboard Mounting Holes112
Fastening the Outboard to the Transom113
Electrical, Fuel Hose, Flush Hose and Control Cables117
Single Outboard121
Oil Injection Set-Up130
Trim in Pin132

Mercury 125 OptiMax - Page 52

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