Mercury 25 Jet FourStroke - Contact Information for Mercury Marine Customer Service

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• Swivel bracket ‑ Lubricate through fitting.

24839

• Tilt tube ‑ Lubricate through fittings.

15915

• Lubricate the threads on the transom clamp screws (if equipped).

15914

MAINTENANCE

eng 67

Main Page

Table of Contents7
Boater's Responsibilities11
Before Operating Your Outboard11
Boat Horsepower Capacity11
General Information11
High-Speed and High-Performance Boat Operation12
Outboard Remote Control Models12
Remote Steering Notice13
Lanyard Stop Switch13
Protecting People in the Water16
Wave and Wake Jumping17
Safety Instructions for Hand-Tilled Outboards17
Exhaust Emissions18
Selecting Accessories for Your Outboard20
Safe Boating Recommendations20
Recording Serial Number23
Model Year Production Code23
Specifications24
Component Identification25
Trailering Boat/Outboard27
Transporting27
Fuel Requirements28
Fuel and Oil28
Low Permeation Fuel Hose Requirement29
EPA Pressurized Portable Fuel Tank Requirements29
Fuel Demand Valve (FDV) Requirement29
Mercury Marine's Pressurized Portable Fuel Tank30
Filling Fuel Tank31
Engine Oil Recommendations31
Checking and Adding Engine Oil32
Remote Control Features34
Tiller Handle Models34
Features and Controls34
Power Trim and Tilt (if Equipped)40
Warning System42
Replaceable Jet Drive Shear Key45
Prestarting Check List46
Operating in Freezing Temperatures46
Operating in Saltwater or Polluted Water46
Operation46
Operating in Shallow Water47
How the Jet Drive Operates47
Stopping the Boat in an Emergency49
Steering the Boat49
Mooring the Boat50
Water Intake Blockage50
Clearing a Lodged Impeller50
Prestarting Instructions51
Engine Break-In Procedure52
Starting the Engine - Remote Control Models52
Starting the Engine - Tiller Handle Models54
Gear Shifting57
Stopping the Engine58
Emergency Starting58
Cleaning Care Recommendations60
Maintenance60
EPA Emission Regulations62
Inspection and Maintenance Schedule63
Top Cowl Removal and Installation64
Worn/Dull Impeller64
Impeller Clearance Adjustment65
Impeller Removal and Installation66
Shift Link Rod Adjustment69
Battery Inspection70
Fuel System70
Steering Link Rod Fasteners71
Corrosion Control Anode72
Spark Plug Inspection and Replacement73
Fuse Replacement - Electric Start Models74
Timing Belt Inspection75
Lubrication Points75
Checking Power Trim Fluid78
Changing Engine Oil79
Submerged Outboard81
Storage Preparation82
Protecting External Outboard Components82
Protecting Internal Engine Components83
Jet Drive83
Positioning Outboard for Storage83
Battery Storage83
Starter Motor will Not Crank the Engine (Electric Start Models)84
Engine will Not Start84
Engine Runs Erratically84
Troubleshooting84
Engine Overspeed (Excessive RPM)85
Performance Loss85
Battery will Not Hold Charge85
Service Assistance86
Owner Service Assistance86
Ordering Literature88
Installation Information90
Installation90
Top Cowl Removal and Installation92
Lifting Outboard93
Determining the Mounting Height of the Outboard Jet93
Fastening the Outboard95
Steering Bracket, Steering Cable Installation97
Steering Link Rod Fasteners98
Electrical Harness, Battery Connection, Fuel Tanks101
Control Cable Installation104
Water Testing108
Maintenance Log110

Mercury 25 Jet FourStroke - Contact Information for Mercury Marine Customer Service

Table of Contents

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