Name: Mercury 225 OptiMax
Brand: Mercury
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OUTBOARD INSTALLATION

1. Mark four mounting holes on the transom using the transom

drilling fixture.

2757

a - Drill guide holes

b - Transom drilling

fixture

c - Transom centerline

Transom Drilling Fixture 91‑98234A2

5489

Aids in engine installation by

acting as a template for engine

mounting holes.

2. Drill four 13.5 mm (17/32 in.) mounting holes.

3973

Table of Contents5
Warranty Information9
Transfer of Warranty9
Warranty Registration United States and Canada9
Warranty Registration Outside the United States and Canada10
Optimax Outboard Limited Warranty United States, Canada, Europe, Confederation of Independent States, Middle-East and Africa11
Year Limited Warranty against Corrosion14
Warranty Coverage and Exclusions18
General Information21
Boater's Responsibilities21
Before Operating Your Outboard21
Boat Horsepower Capacity22
High-Speed and High-Performance Boat Operation22
Outboard Remote Control Models22
Propeller Selection23
Remote Steering Notice25
Lanyard Stop Switch26
Protecting People in the Water29
Passenger Safety Message - Pontoon Boats and Deck Boats30
Wave and Wake Jumping31
Impact with Underwater Hazards32
Exhaust Emissions33
Selecting Accessories for Your Outboard35
Safe Boating Suggestions35
Recording Serial Number37
200/225/250 Optimax Specifications37
Component Identification39
Transporting40
Trailering Boat/Outboard40
Fuel and Oil41
Fuel Recommendations41
Oil Recommendation42
Fuel Additives43
Fuel Requirements43
Avoiding Fuel Flow Restriction43
Filling Remote Oil Tank43
Filling Engine Mounted Oil Reservoir Tank44
Filling Fuel Tank44
Features and Controls45
Remote Control Features45
Warning System46
Power Trim and Tilt49
Operation53
Pre-Starting Check List53
Operating in Freezing Temperatures53
Operating in Saltwater or Polluted Water54
Operating at High Elevations54
Setting Trim Angle While Running Engine at Idle Speed54
Engine Break-In Procedure55
Starting the Engine56
Gear Shifting58
Stopping the Engine59
Maintenance60
Outboard Care60
EPA Emissions60
Inspection and Maintenance Schedule61
Flushing the Cooling System62
Top Cowl Removal and Installation63
Cleaning Care for Top Cowl63
Alternator Belt Inspection64
Fuel System64
Steering Link Rod Fasteners67
Fuse Replacement - 200 and 225 Hp Models68
Fuse Replacement - 250 Hp Model69
Corrosion Control Anode70
Battery Inspection71
Battery Information72
Propeller Replacement73
Spark Plug Inspection and Replacement76
Compressor Air Intake Filter for 200 and 225 Hp Models77
Lubrication Points79
Checking Power Trim Fluid82
Gearcase Lubrication83
Submerged Outboard85
Storage86
Storage Preparation86
Fuel System86
Protecting Internal Engine Components88
Protecting External Outboard Components89
Gearcase89
Positioning Outboard for Storage89
Battery Storage89
Troubleshooting90
Starter Motor will Not Crank the Engine90
Engine will Not Start90
Engine Runs Erratically91
Performance Loss91
Battery will Not Hold Charge91
Owner Service Assistance92
Local Repair Service92
Service Away from Home92
Parts and Accessories Inquiries92
Service Assistance92
Mercury Marine Service Offices93
Outboard Installation95
Important Information95
Avoiding Fuel Flow Restriction95
Boat Horsepower Capacity96
Start in Gear Protection96
Selecting Accessories for Your Outboard96
Fuel Tanks97
Filling the Fuel System97
Installation Specifications98
Lifting the Outboard98
Steering Cable - Starboard Side Routed Cable99
Steering Link Rod Fasteners100
Determining Recommended Outboard Mounting Height103
Drilling Outboard Mounting Holes104
Fastening the Outboard to the Transom106
Electrical, Hoses, Control Cables and Front Clamp109
Filling the Fuel System119
Oil Injection Set-Up120
Trim in Pin123

Mercury 225 OptiMax Manual

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Brand	Mercury
Model	225 OptiMax
Category	Outboard Motor
Language	English