BY SERVICE MANUAL
ii
BY Service Manual
This
Service Manual
has been developed for the exclusive use of service and repair professionals such as
Yanmar authorized Distributors and Yanmar authorized Dealers. It is written with these professionals in mind
and may not contain the necessary detail or safety statements that may be required for a non-professional to
perform the service or repair properly and / or safely. Please contact an authorized Yanmar repair or service
professional before working on your Yanmar product.
Disclaimers:
All information, illustrations and specifications in this manual are based on the latest information available at
the time of publishing. The illustrations used in this manual are intended as representative reference views
only. Moreover, because of our continuous product improvement policy, we may modify information,
illustrations, and / or specifications to explain and / or exemplify a product, service, or maintenance
improvement. We reserve the right to make any change at any time.
Yanmar and
are registered trademarks of Yanmar Co., Ltd. in Japan, the United States and / or
other countries.
All Rights Reserved:
No part of this publication may be reproduced or used in any form by any means - graphic, electronic, or
mechanical, including photocopying, recording, taping, or information storage and retrieval systems - without
the written permission of Yanmar Marine International.
© 2006 Yanmar Marine International.
0406
Summary of Contents for 4BY
Page 1: ...BY series 4BY 6BY SERVICE MANUAL ...
Page 2: ...BY Service Manual BY series SERVICE MANUAL 4BY 6BY P N 0BBY0 G00100 MARINE ENGINES ...
Page 5: ...TABLE OF CONTENTS iv 4BY 6BY Service Manual This Page Intentionally Left Blank ...
Page 7: ...INTRODUCTION 1 2 BY Service Manual This Page Intentionally Left Blank ...
Page 21: ...SAFETY 2 14 BY Service Manual Safety Precautions This Page Intentionally Left Blank ...
Page 131: ...FUEL SYSTEM 6 2 BY Service Manual This Page Intentionally Left Blank ...
Page 159: ...FUEL SYSTEM 6 30 BY Service Manual Repair This Page Intentionally Left Blank ...
Page 161: ...COOLING SYSTEM 7 2 BY Service Manual This Page Intentionally Left Blank ...
Page 181: ...COOLING SYSTEM 7 22 BY Service Manual Repair This Page Intentionally Left Blank ...
Page 183: ...LUBRICATION 8 2 BY Service Manual This Page Intentionally Left Blank ...
Page 199: ...LUBRICATION 8 18 BY Service Manual Repair This Page Intentionally Left Blank ...
Page 201: ...TURBOCHARGER 9 2 BY Service Manual This Page Intentionally Left Blank ...
Page 211: ...TURBOCHARGER 9 12 BY Service Manual Repair This Page Intentionally Left Blank ...
Page 213: ...STARTER MOTOR 10 2 BY Service Manual This Page Intentionally Left Blank ...
Page 221: ...ALTERNATOR 11 2 BY Service Manual This Page Intentionally Left Blank ...
Page 261: ...ELECTRICAL AND ECU 12 34 BY Service Manual Repair This Page Intentionally Left Blank ...
Page 263: ...TROUBLESHOOTING 13 2 BY Service Manual This Page Intentionally Left Blank ...