Yamaha WaveRunner GP800R User manual

*LIT186160226*
WaveRunner
GP800R
SERVICE MANUAL
F0W-28197-1A-11LIT-18616-02-26

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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 equip-
ment. 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 edi-
tion of this manual. Authorized Yamaha dealers are notified periodically of modifications and
significant changes in specifications and procedures, and these are incorporated in succes-
sive editions of this manual.
A10001-0*
WaveRunner GP800R
SERVICE MANUAL
©2000 by Yamaha Motor Corporation, USA
1st Edition, November 2000
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, USA
is expressly prohibited.
Printed in USA
LIT-18616-02-26

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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
information has been compiled to provide the mechanic with an easy to read, handy refer-
ence 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
appropriate 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, 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
1 To help identify parts and clarify procedure steps, there are exploded diagrams at the start
of each removal and disassembly section.
2 Numbers are given in the order of the jobs in the exploded diagram.
3 Symbols indicate parts to be lubricated or replaced (see “SYMBOLS”).
4 A job instruction chart accompanies the exploded diagram, providing the order of jobs,
names of parts, notes in jobs, etc.
5 Dimension figures and the number of parts, are provided for fasteners that require a tight-
ening torque.
Example:
Bolt or screw size : M10 (D) × 25 mm (L)
6 Jobs requiring more information (such as special tools and technical data) are described
sequentially.
10 ×25 mm
D
L

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A50001-1-4
SYMBOLS
Symbols 1 to 9 are designed as thumb-
tabs to indicate the content of a chapter.
1 General Information
2 Specifications
3 Periodic Inspection and Adjustment
4 Fuel System
5 Power Unit
6 Jet Pump Unit
7 Electrical System
8 Hull and Hood
9 Trouble analysis
Symbols 0 to E indicate specific data:
0 Special tool
A Specified liquid
B Specified engine speed
C Specified torque
D Specified measurement
E Specified electrical value
[Resistance ( Ω ), Voltage (V), Electric current
(A)]
Symbol F to H in an exploded diagram
indicate the grade of lubricant and the loca-
tion of lubrication point:
F Apply YAMALUBE 2-W oil or TC-W3 cirtified
outboard oil
G Apply water resistant grease
(Yamaha grease A, Yamaha marine grease)
H Apply molybdenum disulfide grease
Symbols I to N in an exploded diagram
indicate the grade of the sealing or locking
agent, and the location of the application
point:
I Apply Gasket Maker
®
JApply Yamabond #4
(Yamaha bond number 4)
KApply LOCTITE®No. 271 (Red LOCTITE)
LApply LOCTITE®No. 242 (Blue LOCTITE)
MApply LOCTITE®No. 572
NApply silicone sealant
NOTE:
In this manual, the above symbols may not
be used in every case.
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
AM
GM 4
271
LT
242
LT
572
LT 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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1
2
3
4
5
6
7
8
9
GEN
INFO
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
OILS, GREASES AND SEALING FLUIDS................................................ 1-2
GOOD WORKING PRACTICES................................................................ 1-3
DISASSEMBLY AND ASSEMBLY........................................................... 1-4
SPECIAL TOOLS............................................................................................. 1-5
MEASURING ............................................................................................ 1-5
REMOVAL AND INSTALLATION ............................................................ 1-6

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 attached to the inside of the engine
compartment.
Starting primary l.D. number:
F0W: 800101–
ENGINE SERIAL NUMBER
The engine serial number is stamped on a
label attached to the cylinder head.
Starting serial number:
68A: 000101–
JET PUMP UNIT SERIAL NUMBER
The jet pump unit serial number is stamped
on a label attached to the intermediate
housing.
Starting serial number:
68A: 800101–
HULL IDENTIFICATION NUMBER
(H.l.N.)
The H.l.N. is stamped on a plate attached to
the aft deck.