Yamaha MAJESTY YP250 Manuel utilisateur

EB000000

YP250

SERVICE MANUAL

1996 by Yamaha Motor Co., Ltd.

1st Edition, January 1996

unauthorized use without the written

permission of Yamaha Motor Co., Ltd.

is expressly prohibited.

NOTE:

CAUTION:

EB001000 NOTICE

This manual was produced by the Yamaha Motor Company primarily for useby Yamaha dealers and

their qualified mechanics. It is not possible to include all the knowledge of a mechanic in one manual,

so it is assumed that anyone who uses this book to perform maintenance and repairs on Yamaha

scooter has a basic understanding of the mechanical ideas and the procedures of scooter repair. Re-

pairs attempted by anyone without this knowledge are likely to render the scooter unsafe and unfit for

use.

YamahaMotorCompany,Ltd.iscontinuallystrivingtoimproveallitsmodels.Modificationsandsignifi-

cant changes in specifications or procedures will be forwarded to all authorized Yamaha dealers and

will appear in future editions of this manual where applicable.

Designs and specifications are subject to change without notice.

IMPORTANT INFORMATION

Particularly important information is distinguished in this manual by the following notations.

The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR

SAFETY IS INVOLVED!

FailuretofollowWARNINGinstructionscouldresultinsevere injuryordeathto

thescooteroperator, abystanderora personinspectingorrepairing thescoot-

er.

ACAUTIONindicatesspecial precautionsthatmustbetaken toavoiddamage

to the scooter.

NOTE: A NOTE provides key information to make procedures easier or clearer.

243

YP002000 HOW TO USE THIS MANUAL

MANUAL ORGANIZATION

This manual consists of chapters for the main categories of subjects. (See “Illustrated symbols”)

1st title 1: This is the title of the chapter with its symbol on the upper right corner of each page.

2nd title 2: This title indicates the section of the chapter and only appears on the first page of each

section. It is located in the upper left corner of the page.

3rd title 3: This title indicates a sub-section that is followed by step-by-step procedures accompa-

nied by corresponding illustrations.

EXPLODED DIAGRAMS

Tohepsidentifypartsandclarifyproceduresteps,thereareexplodeddiagramsatstartofeachremov-

al and disassembly section.

1. An easy-to-see exploded diagram 4is provided for disassembly and assembly jobs.

2. Numbers 5aregivenin theorderofjobsintheexplodeddiagram.Anumberthatisenclosedbya

circle indicates a disassembly step.

3. An explanation of jobs and notes is presented in an easy-to-read way by the use of symbol marks

6. The meanings of the symbol marks are given on the next page.

4. A job instruction chart 7accompanies the exploded diagram, providing the order of jobs, names

of parts, notes in jobs, etc.

5. Forjobsrequiringmoreinformation,thestep-by-stepformat supplements 8are giveninaddition

to the exploded diagram and the job instruction chart.

24 25

19 20

22 23

EB003000

ILLUSTRATED SYMBOLS

Illustrated symbols 1to 9are designed as

thumb tabs to indicate the chapter’s number

and content.

1General information

2Specifications

3Periodic inspection and adjustment

4Engine

5Cooling system

6Carburetion

7Chassis

8Electrical

9Troubleshooting

Illustrated symbols 10 to 17 are used to identify

the specifications appearing in the text.

10 Possible to maintain with engine mounted

11 Filling fluid

12 Lubricant

13 Special tool

14 Tightening

15 Wear limit, clearance

16 Engine speed

17 Ω, V, A

Illustratedsymbols 18 to 23 inthe explodeddia-

grams indicate the types of lubricants and lu-

brication points.

18 Apply engine oil

19 Apply gear oil

20 Apply molybdenum disulfide oil

21 Apply wheel bearing grease

22 Apply lightweight lithium-soap base grease

23 Apply molybdenum disulfide grease

Illustratedsymbols 24 to 25 inthe explodeddia-

gramsindicatethewheretoapplylockingagent

24 and when to install new parts 25 .

24 Apply locking agent (LOCTITE)

25 Use new one

GENERAL INFORMATION

SPECIFICATIONS

PERIODIC INSPECTION AND

ADJUSTMENT

ENGINE OVERHAUL

COOLING SYSTEM

CARBURETION

CHASSIS

ELECTRICAL

TROUBLESHOOTING

GEN

INFO 1

SPEC 2

INSP

ADJ 3

ENG 4

COOL 5

CARB 6

CHAS 7

ELEC 8

TRBL

SHTG 9

INDEX

CHAPTER 1

GENERAL INFORMATION

SCOOTER IDENTIFICATION 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VEHICLE IDENTIFICATION NUMBER (for E) 1-1. . . . . . . . . . . . . . . . . . .

FRAME SERIAL NUMBER 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ENGINE SERIAL NUMBER 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MODEL LABEL 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FEATURES 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OIL INDICATOR LIGHT 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AUTO CHOKE SYSTEM 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IGNITION CIRCUIT CUT-OFF SYSTEM 1-3. . . . . . . . . . . . . . . . . . . . . . .

IMPORTANT INFORMATION 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PREPARATION FOR REMOVAL PROCEDURES 1-4. . . . . . . . . . . . . . .

REPLACEMENT PARTS 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GASKETS, OIL SEALS, AND O-RINGS 1-4. . . . . . . . . . . . . . . . . . . . . . . .

LOCK WASHERS/PLATES AND COTTER PINS 1-5. . . . . . . . . . . . . . . .

BEARINGS AND OIL SEALS 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CIRCLIPS 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHECKING OF CONNECTIONS 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HOW TO USE THE CONVERSION TABLE 1-7. . . . . . . . . . . . . . . . . . . . .

SPECIAL TOOLS 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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