Mercury 300 XS OptiMax

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OWNER SERVICE ASSISTANCE

102 eng

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Table of Contents3
Warranty Registration United States and Canada7
Transfer of Warranty United States and Canada7
Warranty Information7
Transfer of Mercury Product Protection (Extended Service Coverage) Plan United States and Canada8
Year Limited Warranty against Corrosion8
Mercury Racing Division Two Year Limited Warranty United States and Canada10
U.S. EPA Emissions Limited Warranty13
Emission Control System Components13
California Emissions Limited Warranty14
California Air Resources Board Explanation of Your California Emission Control Warranty Statement16
Emission Certification Star Label17
Warranty Policy-Australia and New Zealand18
Global Warranty Charts Outboard and Jets22
Boater's Responsibilities27
Before Operating Your Outboard27
Boat Horsepower Capacity27
General Information27
High-Speed and High-Performance Boat Operation28
Outboard Remote Control Models28
Remote Steering Notice29
Lanyard Stop Switch29
Protecting People in the Water32
Passenger Safety Message - Pontoon Boats and Deck Boats32
Wave and Wake Jumping34
Impact with Underwater Hazards35
Exhaust Emissions36
Selecting Accessories for Your Outboard38
Safe Boating Recommendations38
Recording Serial Number40
Specifications-300 XS Optimax41
Special Tools and Kits43
Component Identification44
Propeller Selection44
Trailering Boat/Outboard46
Transporting46
Fuel Requirements47
Fuel and Oil47
Oil Recommendation48
Fuel Additives48
Avoiding Fuel Flow Restrictions49
Low Permeation Fuel Hose Requirement49
EPA Pressurized Portable Fuel Tank Requirements49
Fuel Demand Valve (FDV) Requirement49
Mercury Marine's Pressurized Portable Fuel Tank50
Filling Remote Oil Tank51
Filling Engine Mounted Oil Reservoir Tank51
Filling Fuel Tank52
Remote Control Features53
Features and Controls53
Zero Effort Control Features54
Warning System54
Power Trim and Tilt56
Power Trim Operation56
Power Tilt Operation (Single-Ram Systems)58
Power Tilt Operation (Three-Ram Trim Systems)58
Auxiliary Tilt Switch59
Manual Tilt Operation59
Important Information61
Engine Break-In61
Operation61
Engine Break-In Fuel Mixture62
Prestarting Check List62
Operating in Freezing Temperatures62
Operating in Saltwater or Polluted Water63
Operating at High Elevations63
Effects of Elevation and Weather on Performance63
Setting Trim Angle While Running Engine at Idle Speed64
Operating in Shallow Water64
Oil Injection System65
Starting the Engine67
Gear Shifting70
Stopping the Engine70
Power Package Care71
Replacement Parts for Your Power Package71
EPA Emissions Regulations71
Inspection and Maintenance Schedule72
Flushing the Cooling System (Powerhead)74
Flushing the Cooling System (Lower Unit)75
Top Cowl Removal and Installation76
Cleaning Care for Top Cowl76
Fuel System76
Steering Link Rod Fasteners80
Fuses81
Corrosion Control Anode82
Spark Plug Inspection and Replacement83
Battery Inspection85
Charging System Fusible Link85
Replacing the Propeller86
Lubrication Points88
Single-Ram Trim System89
Three-Ram Trim System92
Gearcase Lubricant95
Submerged Power Package97
Storage Preparation98
Storage98
Protecting Internal Engine Components99
Protecting External Outboard Components100
Gearcase100
Positioning Outboard for Storage100
Battery Storage100
Starter Motor will Not Crank the Engine101
Engine will Not Start101
Engine Runs Erratically101
Troubleshooting101
Performance Loss102
Warning Horn Activates (with Power Loss)102
Warning Horn Activates (no Power Loss)102
Battery will Not Hold Charge103
Local Repair Service104
Service Away from Home104
Parts and Accessories Inquiries104
Service Assistance104
Owner Service Assistance104
Ordering Literature107
Mercury Marine Validated Engine Mounting Hardware109
Boat Horsepower Capacity109
Outboard Installation109
Start in Gear Protection110
Selecting Accessories for Your Outboard110
Fuel System110
Installation Specifications112
Lifting the Outboard112
Steering Cable - Starboard Side Routed Cable113
Steering Link Rod Fasteners114
Rear-Mounted Steering Rams or Tie Bars115
Determining Outboard Mounting Height116
Drilling Outboard Mounting Holes121
Fastening the Outboard to the Transom122
Electrical, Hoses, Control Cables, and Front Clamp127
Oil Injection Set-Up138
Engine Well Inlet Cover Installation (Models with Remote Trim Pump)140
Trim in Pin143
Maintenance Log145

Mercury 300 XS OptiMax - Page 108

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