Mercury Jet 25 User Manual
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© 2008 Mercury Marine 25 Jet 2-Stroke Supplement 90-10257081 507
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TABLE OF CONTENTS
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WARRANTY
Outboard Limited Warranty United States, Canada, Europe and
Confederation of Independent States..........................................1
GENERAL INFORMATION
Before Operating Your Outboard.................................................5
Protecting People In The Water...................................................6
Safe Boating Suggestions...........................................................7
Specifications...............................................................................9
Components..............................................................................10
OPERATION
Lubricating the Driveshaft Bearing.............................................11
Operating In Freezing Temperatures.........................................11
Pre‑Starting Check List..............................................................11
Operating In Salt Water Or Polluted Water................................12
Operating In Shallow Water.......................................................12
How the Jet Drive Operates.......................................................13
Stopping the Boat in an Emergency..........................................14
Steering the Boat.......................................................................14
Mooring The Boat......................................................................15
Water Intake Blockage...............................................................16
Clearing A Lodged Impeller.......................................................16
MAINTENANCE
Worn/Dull Impeller.....................................................................17
Impeller Clearance Adjustment..................................................17
Replaceable Jet Drive Shear Key..............................................18
Impeller Removal and Installation..............................................19
Shift Link Rod Adjustment.........................................................20
Corrosion Control Anode...........................................................21
Lubricating the Driveshaft Bearing.............................................22
TABLE OF CONTENTS
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TROUBLESHOOTING
Engine Over‑Speed (Excessive RPM).......................................24
Performance Loss......................................................................24
ENGINE INSTALLATION
Determining the Mounting Height of the Outboard ...................25
Water Testing............................................................................26
WARRANTY
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Outboard Limited Warranty United States, Canada,
Europe and Confederation of Independent States
Outside the United States, Canada and Europe ‑ check with local
distributor.
WHAT IS COVERED: Mercury Marine warrants its new Outboard
and Jet Products to be free of defects in material and workmanship
during the period described below.
DURATION OF COVERAGE: This Limited Warranty provides
coverage for two (2) years from the date the product is first sold to
a recreational use retail purchaser, or the date on which the
product is first put into service, whichever occurs first. Commercial
users of these products receive warranty coverage of one (1) year
from the date of first retail sale, or one (1) year from the date in
which the product was first put into service, whichever occurs first.
Commercial use is defined as any work or employment related use
of the product, or any use of the product which generates income,
for any part of the warranty period, even if the product is only
occasionally used for such purposes. The repair or replacement of
parts, or the performance of service under this warranty, does not
extend the life of this warranty beyond its original expiration date.
Unexpired warranty coverage can be transferred from one
recreational use customer to a subsequent recreational use
customer upon proper re–registration of the product. Unexpired
warrant coverage cannot be transferred either to or from a
commercial use customer.
CONDITIONS THAT MUST BE MET IN ORDER TO OBTAIN
WARRANTY COVERAGE: Warranty coverage is available only to
retail customers that purchase from a Dealer authorized by
Mercury Marine to distribute the product in the country in which the
sale occurred, and then only after the Mercury Marine specified
pre–delivery inspection process is completed and documented.
Warranty coverage becomes available upon proper registration of
the product by the authorized dealer. Routine maintenance
outlined in the Operation and Maintenance Manual must be timely
performed in order to maintain warranty coverage. Mercury Marine
reserves the right to make future warranty coverage contingent on
proof of proper maintenance.
WARRANTY
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WHAT MERCURY WILL DO: Mercury’s sole and exclusive
obligation under this warranty is limited to, at our option, repairing
a defective part, replacing such part or parts with new or Mercury
Marine certified remanufactured parts, or refunding the purchase
price of the Mercury product. Mercury reserves the right to improve
or modify products from time to time without assuming an
obligation to modify products previously manufactured.
HOW TO OBTAIN WARRANTY COVERAGE: The customer
must provide Mercury with a reasonable opportunity to repair, and
reasonable access to the product for warranty service. Warranty
claims shall be made by delivering the product for inspection to a
Mercury dealer authorized to service the product. If purchaser
cannot deliver the product to such a dealer, written notice must be
given to Mercury. We will then arrange for the inspection and any
covered repair. Purchaser in that case shall pay for all related
transportation charges and/or travel time. If the service provided is
not covered by this warranty, purchaser shall pay for all related
labor and material, and any other expenses associated with that
service. Purchaser shall not, unless requested by Mercury, ship
the product or parts of the product directly to Mercury. Proof of
registered ownership must be presented to the dealer at the time
warranty service is requested in order to obtain coverage.
WARRANTY
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WHAT IS NOT COVERED: This limited warranty does not cover
routine maintenance items, tune ups, adjustments, normal wear
and tear, damage caused by abuse, abnormal use, use of a
propeller or gear ratio that does not allow the engine to run in its
recommended wide open throttle RPM range (see the Operation
and Maintenance Manual), operation of the product in a manner
inconsistent with the recommended operation/duty cycle section
of the Operation and Maintenance Manual, neglect, accident,
submersion, improper installation (proper installation
specifications and techniques are set forth in the installation
instructions for the product), improper service, use of an accessory
or part not manufactured or sold by us, jet pump impellers and
liners, operation with fuels, oils or lubricants which are not suitable
for use with the product (see the Operation and Maintenance
Manual), alteration or removal of parts, or water entering the
engine through the fuel intake, air intake or exhaust system, or
damage to the product from insufficient cooling water caused by
blockage of the cooling system by a foreign body, running the
engine out of water, mounting the engine too high on the transom,
or running the boat with the engine trimmed out too far.. Use of the
product for racing or other competitive activity, or operating with a
racing type lower unit, at any point, even by a prior owner of the
product, voids the warranty.
Expenses related to haul out, launch, towing, storage, telephone,
rental, inconvenience, slip fees, insurance coverage, loan
payments, loss of time, loss of income, or any other type of
incidental or consequential damages are not covered by this
warranty. Also, expenses associated with the removal and/or
replacement of boat partitions or material caused by boat design
for access to the product are not covered by this warranty.
No individual or entity, including Mercury Marine authorized
dealers, has been given authority by Mercury Marine to make any
affirmation, representation or warranty regarding the product,
other than those contained in this limited warranty, and if made,
shall not be enforceable against Mercury Marine.
For additional information regarding events and circumstances
covered by this warranty, and those that are not, see the Warranty
Coverage section of the Operation and Maintenance Manual,
incorporated by reference into this warranty.
WARRANTY
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DISCLAIMERS AND LIMITATIONS:
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE EXPRESSLY DISCLAIMED. TO THE EXTENT
THAT THEY CANNOT BE DISCLAIMED, THE IMPLIED WARRANTIES ARE
LIMITED IN DURATION TO THE LIFE OF THE EXPRESS WARRANTY.
INCIDENTAL AND CONSEQUENTIAL DAMAGES ARE EXCLUDED FROM
COVERAGE UNDER THIS WARRANTY. SOME STATES/COUNTRIES DO
NOT ALLOW FOR THE DISCLAIMERS, LIMITATIONS AND EXCLUSIONS
IDENTIFIED ABOVE, AS A RESULT, THEY MAY NOT APPLY TO YOU. THIS
WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO
HAVE OTHER LEGAL RIGHTS WHICH VARY FROM STATE TO STATE AND
COUNTRY TO COUNTRY.
GENERAL INFORMATION
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Before Operating Your Outboard
Read this manual carefully. Learn the difference in handling
characteristics between a jet drive boat and a propeller driven boat.
If you have any questions, contact your dealer.
STEERING AT LOW SPEEDS
Unlike propeller driven boats, the jet drive boat tends to lose
steering control as less water is drawn in and expelled. Increase
speed slightly to regain steering.
MANEUVERABILITY
The jet drive is highly maneuverable at higher speeds, more so,
than propeller driven boats. Use caution when turning to prevent
spin‑outs.
IN NEUTRAL
The impeller will continue to rotate while the engine is in neutral.
Although the approximate balancing of forward and reverse thrust
will minimize boat movement, the boat may tend to move slowly
forward or backward. This is normal for a direct‑drive jet driven
boat. The operator should be aware of this and use caution
whenever the engine is running.
Safety and operating information that is practiced, along with using
good common sense, can help prevent personal injury and product
damage.
This manual as well as safety labels posted on the outboard use
the following safety alerts1. to draw your attention to special safety
instructions that should be followed.
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DANGER
Indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
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WARNING
Indicates a hazardous situation which, if not avoided, could result
in death or serious injury.
1. These safety alerts follow ANSI standard Z535.6‑2006 for product safety
information in product manuals, instructions, and other collateral materials.
GENERAL INFORMATION
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!
CAUTION
Indicates a hazardous situation which, if not avoided, could result
in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, could result in engine
or major component failure.
IMPORTANT: Identifies information essential to the successful
completion of the task.
NOTE: Indicates information that helps in the understanding of a
particular step or action.
Protecting People In The Water
WHILE YOU ARE CRUISING
It is very difficult for a person standing or floating in the water to
take quick action to avoid a boat heading in his/her direction, even
at slow speed.
21604
Always slow down and exercise extreme caution when boating in
an area where there might be people in the water.
Avoid shallow water or where any loose material such as sand,
shells, seaweed, grass, tree branches, etc., can be pulled in and
expelled from the pump as a high speed projectile.
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