AR/SX 240 • 242 Limited/S
SERVICE mAnuAL
AR240 High Output / SX240 High Output / 242 Limited S / 242 Limited
SXT1800A-J (AL-J) / SXT1800B-J (BL-J) / SXT1800C-J (CL-J /
SXT1800D-J (DL-J) / SXT1800E-J (EL-J) / SXT1800F-J (FL-J) /
SXT1800G-J (GL-J) / SXT1800H-J (HL-J)
Service Manual - 2010
©2010 by Yamaha Motor Corporation, U.S.A.
September 2010
All rights reserved. Any reprinting
or unauthorized use
without the written permission of
Yamaha Motor Corporation, U.S.A.
is expressly prohibited.
Printed in U.S.A.
Specifications, features and options are subject to
change without notice.
09-0114
3
i
CHAPTER 1
GENERAL INFORMATION
HOW TO USE THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Manual Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Abbreviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
SAFETY WHILE WORKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Fire Prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Ventilation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Self-Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Parts, Lubricants, and Sealants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Good Working Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Disassembly and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
IDENTIFICATION NUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Primary I.D. Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Engine serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Jet Pump Unit Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Hull Identification Number (H.I.N.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
SPECIAL SERVICE TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Measuring Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Removal and Installation Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
TECHNICAL TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
ECM Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
ECM Coupler Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
1-1
How to Use this Manual
Manual Format
1-2
(Yamaha marine grease A)
Apply silcone grease
1 11 1 12
1 11
1 12
1 13
1 14
1 15
1 16
1 17
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2012 Yamaha AR240 HO Service & Repair Manual
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What's Included?
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Fast Download Speeds
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Full Search Facility
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Description
Yamaha AR240 HO Service & Repair Manual
A comprehensive guide for both professional mechanics and DIY enthusiasts, this manual provides detailed instructions on troubleshooting, repair, and maintenance of the Yamaha AR240 HO.
- Step-by-step procedures for various repairs and maintenance tasks
- Detailed diagrams and specifications to help you understand complex systems
- In-depth information on troubleshooting techniques and diagnostic processes
- Covers comprehensive maintenance procedures, ensuring your vessel remains in top condition
Suitable for both novice DIYers and experienced mechanics, this manual is an essential resource for anyone looking to work on their Yamaha AR240 HO.
