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Mercury Jet 25 User Manual

Mercury Jet 25
31 pages
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© 2008 Mercury Marine 25 Jet 2-Stroke Supplement 90-10257081 507
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Mercury Jet 25 Specifications

General IconGeneral
BrandMercury
ModelJet 25
CategoryEngine
LanguageEnglish

Summary

WARRANTY

Outboard Limited Warranty United States, Canada, Europe and Confederation of Independent States

Details warranty coverage for Mercury outboard and jet products in specified regions.

What is Not Covered

Lists items and conditions not covered by the limited warranty.

Disclaimers and Limitations

Outlines warranty disclaimers, limitations, and legal rights.

GENERAL INFORMATION

Before Operating Your Outboard

Provides essential pre-operation advice and handling differences for jet drives.

Protecting People In The Water

Safety precautions for preventing injury to people in the water.

While Boat is Stationary

Safety warnings and instructions when the boat is not in motion.

Safe Boating Suggestions

Offers recommendations for safe boating practices and regulations.

Report Accidents

Details legal requirements for reporting boating accidents.

Specifications

Components

OPERATION

Lubricating the Driveshaft Bearing

Instructions for lubricating the driveshaft bearing before each use.

Operating In Freezing Temperatures

Procedure for protecting the jet drive in freezing conditions.

Pre-Starting Check List

List of essential checks before starting the outboard.

Operating In Salt Water Or Polluted Water

Maintenance and operational advice for saltwater or polluted environments.

Operating In Shallow Water

Guidance on safely operating the jet drive in shallow water conditions.

How the Jet Drive Operates

Explanation of the functional principles and handling of a jet drive.

Stopping the Boat in an Emergency

Procedure for safely stopping the boat in an emergency situation.

Steering the Boat

Explanation of how steering is controlled by water jet thrust.

Mooring The Boat

Instructions for proper mooring to prevent intake blockage.

Water Intake Blockage

Information on preventing and addressing water intake obstructions.

Clearing A Lodged Impeller

Steps to safely dislodge a jammed impeller and prevent engine starting.

MAINTENANCE

Worn/Dull Impeller

Identification of worn impeller symptoms and sharpening procedures.

Impeller Clearance Adjustment

Procedure for adjusting impeller-to-liner clearance for optimal performance.

Replaceable Jet Drive Shear Key

Explanation of the shear key's function and access for replacement.

Impeller Removal and Installation

Detailed steps for removing and installing the jet drive impeller.

Shift Link Rod Adjustment

Instructions for adjusting the shift link rod to ensure proper gear engagement.

Checking Shift Link Rod Adjustment

Procedure to verify correct shift link rod adjustment for forward gear.

Corrosion Control Anode

Explanation of the anode's role in protecting against corrosion.

Lubricating the Driveshaft Bearing

Detailed procedure for lubricating the driveshaft bearing before each use.

TROUBLESHOOTING

Engine Over-Speed (Excessive RPM)

Lists possible causes and solutions for engine over-speed conditions.

Performance Loss

Identifies common causes for a decrease in engine performance.

ENGINE INSTALLATION

Determining the Mounting Height of the Outboard

Guidelines for setting the correct outboard mounting height for optimal performance.

Boats With A "V" Bottom Hull

Specific instructions for mounting outboards on V-bottom hulls.

Boats With A Flat Bottom Hull

Specific instructions for mounting outboards on flat-bottom hulls.

Water Testing

Procedure for testing the outboard after installation and checking for cavitation.

Checking for Cavitation

Steps to diagnose and resolve cavitation issues during water testing.

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