Yamaha YFM350UK-Big-Bear-2x4 Owners Manual 1998

YAMAHA LIT-11616·1 0-08 4UH-28197-20

YFM350UH SERVICE MANUAL ©1995 by Yamaha Motor Corporation, U.S.A. 1st Edition, August 1995 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. LIT-11616-10-08

NOTICE This manual was written by the Yamaha Motor Company, Ltd. primarily for use by Yamaha dealers and qualified mechanics. It is not possible to put an entire mechanic's education into one manual, so persons using this book to perform maintenance and repairs on Yamaha machines should have a basic understanding of the machanical concepts and procedures inherent in machine repair technology. Without such knowledge, attempted repairs or service to the machine may render it unfit to use and/or unsafe. Yamaha Motor Company, Ltd. is continually striving to improve all models manufactured by Yamaha. Modifications and significant changes in specifications or procedures will be for- warded to all Authorized Yamaha dealers and will, where applicable, appear in future edi- tions of this manual. PARTICULARLY IMPORTANT INFORMATION This material is distinguished by the following notation. A WARNING NOTE: The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! 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 machine. A CAUTION indicates special precautions that must be taken to avoid damage to the machine. A NOTE provides key information to make procedures easier or clearer.

HOW TO USE THIS MANUAL CONSTRUCTION OF THIS MANUAL This manual consists of chapters for the main categories of subjects. (See "Illustrated symbols") 1st title CD: 2nd title (g): This is a chapter with its symbol on the upper right of each page. This title appears on the upper of each page on the left of the chapter symbol. (For the chapter "Periodic inspection and adjustment" the 3rd title appears.) 3rd title@: This is a final title. 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 inspections. A set of particularly important procedure @ is placed between a line of asterisks "*"with each procedure preceded by "e". IMPORTANT FEATURES • Data and a special tool are framed in a box preceded by a relevant symbol@. • An encircled numeral® indicates a part name, and an encircled alphabetical letter data or an alignment mark (J), the others being indicated by an alphabetical letter in a box@. • A condition of a faulty component will precede an arrow symbol and the course of action required the symbol@. EXPLODED DIAGRAM Each chapter provides exploded diagrams before each disassembly section for ease in identi- fying correct disassembly and assembly procedures. 2 • 2 •Crankshaft (!) Usethecrankceseseparetingtool ® Crenkc .. e .. .L. YU-01135 INSPECTION AND REPAIR CYLINDER HEAD •Carbondflposots Useeroundedscreper. NOTE·----- Tekecaretoev<>Odlldemegongthlltperkplug c___ ____ -'-J rnsuument. 0.02 mm 10.0011nl rneeaurernent end reeurtece mentatep: •Anechestterghtedg., CD endethrckne· elfthewerpegeisoutofepecrfrcetron,re· aurt.cflthecvlrllderheed • PIIICee 400- 600 llflt wet nndpaper on 0 '\1 ' I / -,. Yamahachalnlubeor equivalent

CD ® ® @ ENG ttl ® ® lcARBI loRivi-F=..,I (j) ® lcHAslfP61 IELEciDI ® @ ? I © E1 @ @ @ @ [0] @ ® @) @) l 1 l m ®> @ @ -@tt ® ® A IllUSTRATED SYMBOlS (Refer to the illustration) Illustrated symbols CD to® are designed as thumb tabs to indicate the chapter's num- ber and content. CD General information ® Specifications ® Periodic inspection and adjustment @Engine ®Cooling system ® Carburetion (j) Chassis ®Electrical ®Troubleshooting Illustrated symbols @ to @ are used to identify the specifications appearing in the text. @Filling fluid ©Lubricant @Special tool @Tightening @Wear limit, clearance @Engine speed @Q,V,A Illustrated symbols@ to® in the exploded diagram indicate grade of lubricant and location of lubrication point. @Apply engine oil @)Apply gear oil @)Apply molybdenum disulfide oil ®>Apply wheel bearing grease @Apply lightweight lithium-soap base grease @Apply molybdenum disulfide grease @Apply locking agent (LOCTITE®) ®Use new one

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Yamaha YFM350UK-Big-Bear-2x4 Owners Manual 1998

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