Mercury Racing Sterndrive 600SCi User manual

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Declaration of Conformance – Mercury Racing Sterndrive
600SCi (600 HP)
Manufacturer:
Mercury Racing
N7480 County Road UU
Fond du Lac, WI 54935
USA
Authorized Representative:
Marine Power Europe, Inc.
Parc Industriel de Petit-Rechain B-2800
Verviers,
Belgium
Recreational Craft Directive 2003/44/EC amending 94/25/EC
Applicable Requirement Standards Applied
Owner’s manual (A.2.5) ISO 10240
Handling characteristics (A.4) ISO 8665
Inboard Engine (A.5.1.1) ISO 15584; ISO 7840; ISO 10133
Fuel System (A.5.2) ISO 7840; ISO 8469
Electrical System (A.5.3) ISO 10133; ISO 8846
General Steering System (A.5.4.1) Applicable portions of: ABYC P‑21;
EN ISO 10592
Exhaust emission requirements
(B.2) ISO 8178‑1
Owner’s manual (B.4) ISO 8665
Module used for exhaust emission assessment: Modules B+C,
EC‑Type Examination Certificate No.: EXMERC001.
The notified body responsible for EC‑Type Examination for the engine
exhaust emissions assessment is
IMCI
Rue Abbe Cuypers 3
B – 1040, Brussels – Belgium
Notified Body No.: 0609
© 2006 Mercury Marine HP600 SCi (Bravo Drive) 90-8M8021150 1106

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Engine Type: Sterndrive
Fuel Type: Gasoline
Combustion Cycle: 4 Stroke
Engine Family Name: 600SCi
Starting Serial Number: 0M955821
Electromagnetic Compatibility Directive 89/336/EC
Generic emission standard BS EN 61000‑6‑3
Generic immunity standard BS EN 61000‑6‑1
Vehicles, boats and internal
combustion engine driven devices ‑
Radio disturbance characteristics
SAE J551;
CISPR 12
Electrostatic discharge testing BS EN 61000‑4‑2; BS EN 61000‑4‑3
This declaration is issued under the sole responsibility of Mercury Marine and
Marine Power Europe.
Patrick C. Mackey
President ‑ Mercury Marine, Fond du Lac, WI USA
Regulatory contact:
Engineering - Regulations
Mercury Racing
N7480 County Road UU
Fond du Lac, WI 54935-9585
USA
Thank You
for your purchase of one of the finest marine power packages
available. It incorporates numerous design features to assure
operating ease and durability.
With proper care and maintenance, you will thoroughly enjoy using
this product for many boating seasons. To ensure maximum
performance and carefree use, we ask that you thoroughly read
this manual.

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The Operation, Maintenance & Warranty Manual contains specific
instructions for using and maintaining your product. We suggest
that this manual remain with the product for ready reference
whenever you are on the water.
Again, thank you for purchasing one of our Mercury Marine
products. We sincerely hope your boating will be pleasant!
Mercury Racing,
N7480 County Road "UU"
Fond du Lac, WI 54935-9585
7406
Warranty Message
The product you have purchased comes with a limited warranty
from Mercury Marine; the terms of the warranty are set forth in the
Warranty Information section of this manual. The warranty
statement contains a description of what is covered, what is not
covered, the duration of coverage, how to best obtain warranty
coverage, important disclaimers and limitations of damages, and
other related information. Please review this important information.
! WARNING
The operator (driver) is responsible for the correct and safe
operation of the boat, the equipment aboard and the safety of all
occupants aboard. We strongly recommend that the operator
read this Operation, Maintenance and Warranty Manual and
thoroughly understand the operational instructions for the power
package and all related accessories before the boat is used.

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! WARNING
The engine exhaust from this product contains chemicals known
to the state of California to cause cancer, birth defects or other
reproductive harm.
Safety Alerts and Notices
Throughout this publication, "Warnings" and "Cautions,"
accompanied by the international HAZARD symbol !, are used
to alert the technician to special instructions concerning a
particular service or operation that may be hazardous if performed
incorrectly or carelessly. Observe these safety alerts carefully.
These safety alerts alone can not eliminate the hazards they
signal. Strict compliance to these special instructions when
performing the service, and common sense operation are major
accident prevention measures.
! WARNING
WARNING—indicates a potentially hazardous situation that, if
not avoided, could result in death or serious injury.
! CAUTION
CAUTION—indicates a potentially hazardous situation that, if not
avoided, may result in minor or moderate injury or property
damage. It may also be used to alert against unsafe practices.
IMPORTANT: Indicates information or instructions that are
necessary for a particular step or action.
NOTE: Indicates information that helps in the understanding of a
particular step or action.
Copyright and Trademark Information
Mercury Marine, Fond du Lac, Wisconsin U.S.A.
Litho in U.S.A.
© 2006, Mercury Marine

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Mercury, Mercury Marine, MerCruiser, Mercury MerCruiser,
Mercury Racing, Mercury Precision Parts, Mercury Propellers,
Mariner, Quicksilver, #1 On The Water, Alpha, Bravo, Pro Max,
OptiMax, Sport‑Jet, K‑Planes, MerCathode, RideGuide,
SmartCraft, Zero Effort, M with Waves logo, Mercury with Waves
logo, and SmartCraft logo are all registered trademarks of
Brunswick Corporation. Mercury Product Protection logo is a
registered service mark of Brunswick Corporation.

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TABLE OF CONTENTS
vii
Warranty Information
Warranty Registration United States And Canada......................1
Transfer Of Warranty...................................................................1
Mercury Racing Division One Year Limited Warranty.................2
Products Sold to Government Agencies......................................6
3 Year Limited Warranty Against Corrosion................................7
Warranty Coverage and Exclusions for Mercury Racing Sterndrive
Products.....................................................................................10
General Information
Boater's Responsibilities............................................................12
Boat Horsepower Capacity........................................................12
High-Speed and High-Performance Boat Operation.................13
Paddle Wheel and Water Temperature Sensors.......................13
Lanyard Stop Switch..................................................................13
Trailering Boat...........................................................................15
Protecting People In The Water.................................................15
Exhaust Emissions....................................................................16
Wave And Wake Jumping.........................................................18
Impact With Underwater Hazards..............................................19
Operating in Shallow Water.......................................................20
Safe Boating Suggestions.........................................................22
Stolen Power Package..............................................................25
Specifications
Engine Identification..................................................................26
General Engine Specifications...................................................27
Engine Operating Limitations (HP600)......................................28
Fuel Requirements....................................................................28
Oil Recommendations...............................................................31
Capacities..................................................................................32
California Emissions Regulations..............................................32
Engine Break-in.........................................................................32
After Break-In Period.................................................................33

TABLE OF CONTENTS
viii
Operation
Instrumentation..........................................................................34
Warning System........................................................................34
Electrical System Overload Protection......................................37
Remote Controls (Console Mounted Zero Effort)......................42
Remote Controls........................................................................43
Power Trim................................................................................46
Freezing Temperature Operation..............................................53
Starting, Shifting and Stopping..................................................53
Operation Chart.........................................................................55
Drain Plug and Bilge Pump........................................................56
Launching And Boat Operation Care.........................................57
Conditions Affecting Operation
Weight Distribution.....................................................................58
Bottom Of Boat..........................................................................58
Cavitation...................................................................................58
Ventilation..................................................................................59
Propeller Selection.....................................................................59
Conditions That Lower Engine Performance.............................60
Maintenance
Special Tools.............................................................................61
Servicing High Horsepower Engines.........................................62
Service Responsibilities.............................................................62
Replacement Service Parts.......................................................63
Do-It-Yourself Maintenance Suggestions..................................64
Engine Maintenance Charts......................................................65
Bravo Drive Maintenance Charts...............................................67
Checking Fluid Levels................................................................69
Changing Fluids.........................................................................76
Lubrication.................................................................................89
Propellers...................................................................................92
Flushing the Power Package.....................................................96
Seawater Pump Impeller Inspection..........................................99

TABLE OF CONTENTS
ix
Cleaning the Seawater (Raw Water) Section of the Engine Oil,
Power Steering, and Fuel Coolers...........................................100
Serpentine and Supercharger Drive Belts...............................102
Fuel Filters...............................................................................107
Corrosion and Corrosion Protection........................................109
Battery.....................................................................................114
Bottom of Boat.........................................................................115
Inspection and Maintenance....................................................115
Attention Required After Submersion......................................116
Cold Weather or Extended Storage
Power Package Lay-up............................................................117
Draining Instructions................................................................119
Battery Winter Storage............................................................123
Power Package Recommissioning..........................................123
Troubleshooting
Engine Will Not Crank .............................................................127
Engine Cranks But Will Not Start.............................................128
Engine Hard to Start, Runs Rough, Misses, and/or Backfires. 128
Poor Performance....................................................................129
Engine Coolant Temperature Too Low....................................129
Engine Coolant Temperature Too High...................................130
Low Engine Oil Pressure.........................................................130
Power Trim Does Not Operate (Motor Doesn't Run)...............131
Battery Will Not Come Up On Charge.....................................131
Power Trim Does Not Operate (Motor Runs But Drive Unit Does
Not Move)................................................................................131
Electrical Analog Trim Gauge Malfunction...............................132
Remote Control Operates Hard, Binds, Has Excessive Free-Play
or Makes Unusual Sounds.......................................................132
Steering Wheel Turns Hard or Jerky.......................................132
Seawater Pressure Is Below Specification..............................133
Seawater Pressure Is Above Specification..............................133

TABLE OF CONTENTS
x
Owner Service Assistance
Local Repair Service................................................................134
Service Away From Home.......................................................134
Parts And Accessories Inquiries..............................................134
Service Assistance..................................................................134
Mercury Mercruiser Service Offices.........................................135
Ordering Literature
United States and Canada.......................................................137
Outside The United States and Canada..................................137
Maintenance Log
Maintenance Log.....................................................................138

WARRANTY INFORMATION
1
Warranty Registration United States And Canada
Outside United States and Canada ‑ Check with your local
distributor.
1. You may change your address at any time, including at time
of warranty claim, by calling Mercury Marine or sending a letter
or fax with your name, old address, new address, and engine
serial number to Mercury Marine’s warranty registration
department. Your dealer can also process this change of
information.
Mercury Marine
Attn.: Warranty Registration Department
W6250 W. Pioneer Road
P.O. Box 1939
Fond du Lac, WI 54936-1939
920-929-5054
Fax [phone]
NOTE: Registration lists must be maintained by Mercury Marine
and any dealer on marine products sold in the United States,
should a safety recall notification under the Federal Safety Act be
required.
2. At the time of sale, the dealer should complete the warranty
registration and immediately submit it to Mercury Marine via
MercNET, E‑mail, or mail. Upon receipt of this warranty
registration, Mercury Marine will record the registration.
IMPORTANT: Your warranty coverage begins at the time of sale,
but warranty claims cannot be processed until the product is
registered with Mercury Marine.
3. Upon processing the warranty registration, Mercury Marine
will send the purchaser a Mercury Owner Resource Guide.
The back page of this guide contains your warranty
registration information and should be saved. If this
registration verification is not received within 30 days, please
contact your selling dealer immediately.
Transfer Of Warranty
The limited warranty is transferable to a subsequent purchaser, but
only for the remainder of the unused portion of the limited warranty.
This will not apply to products used for commercial applications.

WARRANTY INFORMATION
2
To transfer the warranty to the subsequent owner, send or fax a
copy of the bill of sale or purchase agreement, new owner’s name,
address and engine serial number to Mercury Marine’s warranty
registration department. In the United States and Canada, mail to:
Mercury Marine
Attn: Warranty Registration Department
W6250 W. Pioneer Road
P.O. Box 1939
Fond du Lac, WI 54936-1939
920-929-5054
Fax [phone]
Upon processing the transfer of warranty, Mercury Marine will send
registration verification to the new owner of the product by mail.
There is no charge for this service.
For products purchased outside the United States and Canada,
contact the distributor in your country, or the Marine Power Service
Center closest to you.
Mercury Racing Division One Year Limited Warranty
WHAT IS COVERED
Mercury Marine warrants its new products (and remanufactured
products sold under the trade name "Pacemaker") to be free of
defects in material and workmanship during the period described
below.
DURATION OF COVERAGE
This Limited Warranty provides coverage for one (1) year from
either 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. 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 to a subsequent purchaser
upon proper re‑registration of the product.

WARRANTY INFORMATION
3
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. Inaccurate warranty registration information regarding
recreational use, or subsequent change of use from recreational
to commercial may void the warranty at the sole discretion of
Mercury Marine. 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 warranty coverage contingent upon proof of proper
maintenance.
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 re‑manufactured
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.

WARRANTY INFORMATION
4
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 INFORMATION
5
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, 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, 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. The commercial use of
the product, defined as any work or employment related use of the
product, or any income generating use of the product, even if such
use is only occasional, will void the warranty. Use of the product
for racing or other competitive activity, 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, tournament fees, club fees, prize money
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.

WARRANTY INFORMATION
6
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.
DISCLAIMERS AND LIMITATIONS THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE EX‑PRESSLY 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.
Products Sold to Government Agencies
Contact the Mercury Racing Sales Department for a copy of the
Government Agencies Warranty Packet Kit which explains the
conditions required for government agencies to receive warranty
when purchasing Mercury Racing Outboard or Sterndrive product.
Mercury Racing Sales Department
N7840 County Road UU
Fond du Lac, WI 54935
920-921-5330
Fax [phone]

WARRANTY INFORMATION
7
3 Year Limited Warranty Against Corrosion
WHAT IS COVERED: Mercury Marine warrants that each new
Mercury, Mariner, Mercury Racing Outboard, Sport Jet, M2 Jet
Drive, Tracker by Mercury Marine Outboard, Mercury MerCruiser
Inboard or Sterndrive Engine, Mercury Racing Bravo style
sterndrive engine (Product) will not be rendered inoperative as a
direct result of corrosion for the period of time described below.
DURATION OF COVERAGE: This limited corrosion warranty
provides coverage for three (3) years from either the date the
product is first sold, or the date on which the product is first put into
service, whichever occurs first. 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 to subsequent
(non‑commercial use) purchaser upon proper re‑registration of the
product.
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. Corrosion prevention devices
specified in the Operation and Maintenance Manual must be in use
on the boat, and routine maintenance outlined in the Operation and
Maintenance Manual must be timely performed (including without
limitation the replacement of sacrificial anodes, use of specified
lubricants, and touch‑up of nicks and scratches) in order to
maintain warranty coverage. Mercury Marine reserves the right to
make warranty coverage contingent upon proof of proper
maintenance.

WARRANTY INFORMATION
8
WHAT MERCURY WILL DO: Mercury's sole and exclusive
obligation under this warranty is limited to, at our option, repairing
a corroded part, replacing such part or parts with new or Mercury
Marine certified re‑manufactured 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.
WHAT IS NOT COVERED: This limited warranty does not cover
electrical system corrosion; corrosion resulting from damage,
corrosion which causes purely cosmetic damage, abuse or
improper service; corrosion to accessories, instruments, steering
systems; corrosion to factory installed jet drive unit; damage due
to marine growth; replacement parts (parts purchased by
customer); products used in a commercial application.
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.

WARRANTY INFORMATION
9
Corrosion damage caused by stray electrical currents (on‑shore
power connections, nearby boats, submerged metal) is not
covered by this corrosion warranty and should be protected
against by the use of a corrosion protection system, such as the
Mercury Precision Parts or Quicksilver MerCathode system and/
or Galvanic Isolator. Corrosion damage caused by improper
application of copper base anti‑fouling paints is also not covered
by this limited warranty. If anti‑fouling protection is required,
Tri‑Butyl‑Tin‑Adipate (TBTA) base anti‑fouling paints are
recommended on Outboard and MerCruiser boating applications.
In areas where TBTA base paints are prohibited by law, copper
base paints can be used on the hull and transom. Do not apply
paint to the outboard or MerCruiser product. In addition, care must
be taken to avoid an electrical interconnection between the
warranted product and the paint. For MerCruiser product, an
unpainted gap of at least 38 mm (1.5 in.) should be left around the
transom assembly. Refer to the Operation and Maintenance
Manual for additional details.
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.
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.

WARRANTY INFORMATION
10
Warranty Coverage and Exclusions for Mercury
Racing Sterndrive Products
The purpose of this section is to help eliminate some of the more
common misunderstandings regarding warranty coverage. The
following information explains some of the types of services that
are not covered by warranty. The provisions set forth following
have been incorporated by reference into the Mercury Racing
Division Three Year Limited Warranty Against Corrosion Failure,
the Mercury Racing Division 90 Day, 6 months and One Year
Limited Warranties.
Keep in mind that warranty covers repairs that are needed within
the warranty period because of defects in material and
workmanship. Installation errors, accidents, normal wear, and a
variety of other causes that affect the product are not covered.
Warranty is limited to defects in material or workmanship, but 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.
Should you have any questions concerning warranty coverage,
contact your authorized dealer. They will be pleased to answer any
questions that you may have.
GENERAL EXCLUSIONS FROM WARRANTY
1. Minor adjustments and tune‑ups, including checking, cleaning
or adjusting spark plugs, ignition components, carburetor or
EFI settings, filters, belts, controls, and checking lubrication
made in connection with normal services.
2. Damage caused by lack of maintenance.
3. Haul‑out, launch, towing charges, and all related
transportation charges and/or travel time, etc.
4. Additional service work requested by customer other than that
necessary to satisfy the warranty obligation.