Yamaha WaveRunner GP1300R User manual

SERVICE MANUAL
GP1300R
WaveRunner
F1G-28197-1F-11LIT-18616-02-44
*LIT186160244*

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NOTICE
This manual has been prepared by Yamaha primarily for use by Yamaha dealers and their trained
mechanics when performing maintenance procedures and repairs to Yamaha equipment. It has
been written to suit the needs of persons who have a basic understanding of the mechanical and
electrical concepts and procedures inherent in the work, for without such knowledge attempted
repairs or service to the equipment could render it unsafe or unfit for use.
Because Yamaha has a policy of continuously improving its products, models may differ in detail
from the descriptions and illustrations given in this publication. Use only the latest edition of this
manual. Authorized Yamaha dealers are notified periodically of modifications and significant
changes in specifications and procedures, and these are incorporated in successive editions of this
manual.
A10001-0*
WaveRunner GP1300R
SERVICE MANUAL
©2003 by Yamaha Motor Corporation, USA
1st Edition, February 2003
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, USA
is expressly prohibited.
Printed in USA
LIT-18616-02-44

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HOW TO USE THIS MANUAL
MANUAL FORMAT
All of the procedures in this manual are organized in a sequential, step-by-step format. The informa-
tion has been compiled to provide the mechanic with an easy to read, handy reference that contains
comprehensive explanations of all disassembly, repair, assembly, and inspection operations.
In this revised format, the condition of a faulty component will precede an arrow symbol and the
course of action required will follow the symbol, e.g.,
•Bearings
Pitting/scratches → Replace.
To assist you in finding your way through this manual, the section title and major heading is given at
the top of every page.
ILLUSTRATIONS
The illustrations within this service manual represent all of the designated models.
CROSS REFERENCES
The cross references have been kept to a minimum. Cross references will direct you to the appropri-
ate section or chapter.

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IMPORTANT INFORMATION
In this Service Manual particularly important information is distinguished in the following ways.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED!
WARNING
Failure to follow WARNING instructions could result in severe injury or death to the machine
operator, passenger(s), a bystander, or a person inspecting or repairing the watercraft.
CAUTION:
A CAUTION indicates special precautions that must be taken to avoid damage to the water-
craft.
NOTE:
A NOTE provides key information to make procedures easier or clearer.
IMPORTANT:
This part has been subjected to change of specification during production.

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HOW TO USE THIS MANUAL
1To help identify parts and clarify procedure steps, there are exploded diagrams at the start of
each removal and disassembly section.
2Numbers are given in the order of the jobs in the exploded diagram.
3Symbols indicate parts to be lubricated or replaced (see “SYMBOLS”).
4A job instruction chart accompanies the exploded diagram, providing the order of jobs, names of
parts, notes in jobs, etc.
5Dimension figures and the number of parts, are provided for fasteners that require a tightening
torque.
Example:
Bolt or screw size : M10 (D) ×25 mm (L)
6Jobs requiring more information (such as special service tools and technical data) are described
sequentially.
10 ×25 mm
D
L

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A50001-1-4
SYMBOLS
Symbols 1to 9are designed to indicate the
content of a chapter.
1General Information
2Specifications
3Periodic Inspection and Adjustment
4Fuel System
5Power Unit
6Jet Pump Unit
7Electrical System
8Hull and Hood
9Trouble Analysis
Symbols 0to Eindicate specific data.
0Special service tool
ASpecified oil or fluid
BSpecified engine speed
CSpecified tightening torque
DSpecified measurement
ESpecified electrical value
(resistance, voltage, electric current)
Symbols Fto Hin an exploded diagram indi-
cate the grade of lubricant and the lubrication
point.
FApply Yamaha 2-stroke motor oil
GApply water resistant grease
(Yamaha grease A, Yamaha marine grease)
HApply molybdenum disulfide grease
Symbols Ito Nin an exploded diagram indi-
cate the type of sealant or locking agent and
the application point.
IApply Gasket Maker
JApply Yamabond No. 4
KApply LOCTITE 271 (red)
LApply LOCTITE 242 (blue)
MApply LOCTITE 572
NApply silicone sealant
NOTE:
Additional symbols may be used in this man-
ual.
12
34
56
78
90
AB
CD
EF
GH
IJ
KL
MN
GEN
INFO SPEC
INSP
ADJ FUEL
POWR
JET
PUMP
–+
ELEC
HULL
HOOD
TRBL
ANLS
T
R
.
.
E
A M
GM
4
271
LT
242
LT
572
LT SS

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INDEX
GENERAL INFORMATION 1
GEN
INFO
SPECIFICATIONS 2
SPEC
PERIODIC INSPECTION AND
ADJUSTMENT 3
INSP
ADJ
FUEL SYSTEM 4
FUEL
POWER UNIT 5
POWR
JET PUMP UNIT 6
JET
PUMP
ELECTRICAL SYSTEM 7
ELEC
HULL AND HOOD 8
HULL
HOOD
TROUBLE ANALYSIS 9
TRBL
ANLS
–+
A30000-0

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GEN
INFO
1
2
3
4
5
6
7
8
9
CHAPTER 1
GENERAL INFORMATION
IDENTIFICATION NUMBERS .........................................................................1-1
PRIMARY l.D. NUMBER ...........................................................................1-1
ENGINE SERIAL NUMBER ......................................................................1-1
JET PUMP UNIT SERIAL NUMBER .........................................................1-1
HULL IDENTIFICATION NUMBER (H.l.N.)...............................................1-1
SAFETY WHILE WORKING......................................................................1-2
FIRE PREVENTION ..................................................................................1-2
VENTILATION ...........................................................................................1-2
SELF-PROTECTION.................................................................................1-2
PARTS, LUBRICANTS, AND SEALANTS ................................................1-2
GOOD WORKING PRACTICES ...............................................................1-3
DISASSEMBLY AND ASSEMBLY ............................................................1-4
SPECIAL SERVICE TOOLS ...........................................................................1-5
MEASURING AND DIAGNOSIS ...............................................................1-5
REMOVAL AND INSTALLATION..............................................................1-7

1-1
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GEN
INFO IDENTIFICATION NUMBERS
A60700-0*
IDENTIFICATION NUMBERS
PRIMARY l.D. NUMBER
The primary l.D. number is stamped on a label
1attached inside the engine compartment.
Starting primary l.D. number:
F1G: 800301
1
ENGINE SERIAL NUMBER
The engine serial number is stamped on a
label 1attached to the engine unit.
Starting serial number:
60T: 1000001
JET PUMP UNIT SERIAL NUMBER
The jet pump unit serial number is stamped on
a label attached to the intermediate housing.
HULL IDENTIFICATION NUMBER
(H.l.N.)
The H.l.N. is stamped on a plate 1attached to
the hull on the aft, starboard (right) side.

1-2
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GEN
INFO SAFETY WHILE WORKING
SAFETY WHILE WORKING
To prevent and accident or injury and to
ensure quality service, follow the safety proce-
dures provided below.
FIRE PREVENTION
Gasoline is highly flammable.
Keep gasoline and all flammable products
away from heat, sparks, and open flames.
VENTILATION
Gasoline vapor and exhaust gas are heavier
than air and extremely poisonous. If inhaled in
large quantities they may cause loss of con-
sciousness and death within a short time.
When test running an engine indoors (e.g., in a
water tank), be sure to do so where adequate
ventilation can be maintained.
SELF-PROTECTION
Protect your eyes by wearing safety glasses or
safety goggles during all operation involving
drilling and grinding, or when using an air com-
pressor.
Protect your hands and feet by wearing protec-
tive gloves or safety shoes when necessary.
PARTS, LUBRICANTS, AND
SEALANTS
Use only genuine Yamaha parts, lubricants,
and sealants or those recommended by
Yamaha, when servicing or repairing the
watercraft.