Yamaha CE50T Manuale utente

1987 - 1990

MOTORCYCLE

SERVICE MANUAL

Model : CE50T, CG50A, CG50U, CG50W

2YT281972000 *2YT281972000*

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CE50T

SERVICE MANUAL

1st Edition, November 1986

unauthorized use without the written

permission of Yamaha Motor Co., Ltd.

is expressly prohibited.

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NOTICE

This manual was written by the Yamaha Motor Company primarily for use by Yamaha dealers and

their qualified mechanics. It is not possible to put an entire mechanic's education into one manual,

so it is assumed that persons using this book to perform maintenance and repairs on Yamaha scooter

have a basic understanding of the mechanical concepts and procedures inherent in scooter repair tech-

nology. Without: such knowledge, attempted repairs or service to this model 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 forwarded to all Autho-

rized Yamaha dealers and will, where applicable,appear in future editions of this manual.

TECHNICAL PUBLICATIONS

SERVICE DIVISION

MOTORCYCLES OPERATIONS

YAMAHAMOTOR CO., LTD.

HOW TOUSE THiS MANUAL

PARTICULARLYiMPORTANT iNFORMATiON

This material is distinguished bythe following notation.

NOTE: A NOTE provides keyinformation to make procedureseasier or clearer.

ili ii i iiil ACAUTIONindicatesspecialproceduresthatmustbefollowedtoavoid

damageto thescooter.

A WARNING indicatesspecial procedures that must be followed to avoid injury

to a scooter operator or person inspecting or repairing thescooter.

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 afaulty component will precede an arrow symbol and the course

of action required will follow the symbol, e.g.,

• Bearings

Pitting/Damage_ Replace.

EXPLODED DIAGRAM

Each chapter provides exploded diagrams before each disassembly section for ease in identifying cor-

rect disassembly and assembly procedures.

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(9®iLLUSTRATED SYMBOLS

IGENINFO (Refer to the illustration)

Illustrated symbols (_) to _) are designed as

thumb tabs to indicatethe chapter's number and

(_ (_) content.

%_JDI IC _i General information

ENGOOL Periodic inspection and adjustment

_ EngineCooling system

(_ (_) _ Carburetion

@Chassis

ICARB[ ]_ 1 _"AS1_I _(_)_; pter'nCdl'ces

® ®

® ® _ Illustrated symbols (_ to(_) are used to identify

6_ _ the specifications appearing in the text.

(_) Filling fluid

(_ Lubricant

(_) Tightening

_Wear limit, clearance(_) (_) -- Engine speed

@ @

® ® @Illustrated symbols (_ to (_ in the exploded

.,1 _ jdiagram indicate grade of lubricant and location

- _ = of lubrication point.

_ _ ® Apply engine o,1

® Apply gear oil

@ (_ (_ @(_Apply molybdenum disulfide oilApply wheel bearing grease

_ _ _ _L_.._ _(_))Apply lightweightlithium-soap base grease

Apply molybdenum disulfide grease

Apply locking agent (LOCTITE ®)

®l

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INDEX

GENERAL,NFORMAT,ON

ENGINE OVERHAUL '_'%_

ENG _

CARBURETION CARB_,

CHASSISCHAS_

L..,-.-----J

ELECTRICAL ELEC_

APPENDICES APPX_

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1p,

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GEN

CHAPTER 1

GENERAL INFORMATNON

SCOOTER IDENTIFICATION ....................................... B-3

VEHICLE IDENTIFICATION NUMBER .............................. B-3

ENGINE SERIAL NUMBER ....................................... B-3

IMPORTANT INFORMATION ...................................... B-3

ALl. REPLACEMENT PARTS ..................................... B-3

GASKETS, OIL SEALS,AND O-RINGS ............................ B-3

LOCK WASHER/PLATES AND COTTER PINS ..................... B-3

BEARINGS AND OIL SEALS ..................................... B-4

CIRCLIPS ...................................................... B-4

SPECIAL TOOLS .................................................. B-4

FOR TUNE-UP .................................................. B-4

FOR ENGINE SERVICE .......................................... B-4

FOR CHASSIS SERVICE ......................................... B-5

FOR ELECTRICAL COMPONENTS ................................ B-5

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INFO

SCOOTER IDENTIFICATION

GENERAL

INFORMATION

SCOOTER IDENTIFICATION

VEHICLE IDENTIFICATION NUMBER

The vehicle identification number (~ is stamped

into the frame.

NOTE:

The vehicle identification number is used to iden-

tify your scooter and may be used to register your

scooterwith the licensing outhority in your state.

Starting Serial Number:

JYA2UG00-~HA720101

ENGINE SERIAL NUMBER

The engine serial number (~ is stamped into the

crankcase.

NOTE:

The first three digits of these numbers are for

model identifications; the remaining digits are the

unit production number.

Starting Serial Number:

14T-720101

NOTE:

Designs and specifications are subject to change

without notice.

1-1

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