Yamaha VMX12H Handbuch

VMXl2N,

NC~K,

LIT

161

0-1

FOREWORD

This Supplementary Service Manual has been prepared to introduce new service and data

for the VMX12H/VMX12HC. For complete service information procedures

is necessary

use this Supplementary Service Manual together

with

the following manual.

VMX12N SERVICE MANUAL:2WE

28197

VMXl2F SUPPLEMENTARY SERVICE MANUAL:2WE

28197

VMX 12H/VMX12HC

SUPPLEMENTARY

SERVICE

MANUAL

01995 by Yamaha Motor

Co.

Ltd.

1st Edition, July 1995

All

rights resewed.

Any reprinting or unauthorized use

without the written permission

Yamaha Motor Co., Ltd.

expressly prohibited.

NOTICE

This model has been designed and manufactured to perform within certain specifications

regard to performance and emissions. Proper service with the correct tools in neces

sary to ensure that the motorcycle

will

operate as designed. If there is any question about

information changes that apply to this model. This policy is intended to provide the cus

tomer with the most satisfaction from his motorcycle and to conform with federal envi

a service procedure,

is imperative that you contact a Yamaha dealer for any service

ronmental quality objectives.

NOTE:

For

USA,

California:

This Service Manual contains information regarding periodic maintenance to the emission

control system. Please read this material carefully.

PARTICULARY IMPORTANT INFORMATION

This material is distinguished by the following notation.

SAFETY

INVOLVED!

The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR

Failure to follow WARNING instructions could result

severe injury

death to the motorcycle operator, a bystander, or

person inspecting

or repairing the motorcycle.

A CAUTION indicates special precautions that must be taken to avoid

damage to the motorcycle.

NOTE provides key information

make procedures easier

clearer.

NOTE:

HOW

USE

THIS

MANUAL

CONSTRUCTION OF THIS MANUAL

This manual consists of chapters for the main categories of subjects. (See

Illustrated

sym-

1st title This is a chapter

with

its symbol on the upper right of each page.

2nd title 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.)

This is a final title.

3rd title

MANUAL FORMAT

All of the procedures

this manual are organized in a sequential, step

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

each procedure preceded by

IMPORTANT FEATURES

Data and a special tool are framed in a box preceded by a relevant symbol

An encircled numeral indicates

part name, and

encircled alphabetical letter data

A condition of a faulty component

will

precede an arrow symbol and the course of action

alignment mark the others being indicated by an alphabetical letter in a box

required

EXPLODED DIAGRAM

Each chapter provides exploded diagrams before each disassembly section for ease

identi

fying correct disassembly and assembly procedures.

....

........

............................

I I

EB003000

ILLUSTRATED

SYMBOLS

Illustrated symbols to are printed on

top right of each page and indicatethe sub

ject

each chapter.

General information

Specifications

Periodic inspections and adjustments

Engine

Cooling system

Carburetion

Chassis

Electrical

Troubleshooting

Illustrated symbols to are used to

identify the specifications appearing in the

text.

Filling fluid

Lubricant

Special tool

@Wear limit, clearance

Engine speed

Illustratedsymbols to in the exploded

diagrams indicate the types

lubricants

and lubrication points.

Apply engine oil

Apply gear oil

Apply wheel bearing grease

Apply lightweight lithium

soap base grease

Apply molybdenum disulfide grease

Illustrated symbols to in the exploded

diagrams indicate the where

apply locking

agent and when to install new parts

Apply locking agent

Replace

Apply molybdenum disulfide oil

CONTENTS

GENERAL INFORMATION

..............................................................................

MOTORCYCLE IDENTIFICATION

............................................................

VEHICLE IDENTIFICATION NUMBER

................................................

FRAME SERIAL NUMBER

..................................................................

ENGINE SERIAL NUMBER

.................................................................

SPECIAL TOOLS .....................................................................................

SPECIFICATIONS

............................................................................................

GENERAL SPECIFICATIONS

..................................................................

MAINTENANCE SPECIFICATIONS

........................................................

ENGINE

...............................................................................................

ELECTRICAL

........................................................................................

PERIODIC INSPECTION AND ADJUSTMENT

................................................

ENGINE

....................................................................................................

ENGINE OIL REPLACEMENT

..............................................................

ENGINE OVERHAUL

......................................................................................

INSPECTION AND REPAIR .....................................................................

CRANKSHAFT AND CONNECTING ROD

..........................................

BALANCER SHAFT

...........................................................................

MIDDLE GEAR SERVICE

.......................................................................

CHASSIS

........................................................................................................

SHAFT DRIVE ......................................................................................... 14

GEN

MOTORCYCLE IDENTIFICATION

GENERAL INFORMATION

MOTORCYCLE IDENTIFICATION

VEHICLE IDENTIFlCATlON NUMBER

The vehicle identification number is

stamped into the right side of

the

steering

pipe.

Starting serial number:

JYA2WEE0 TA050101 (USA)

JYA2WFC0 TA012101 (California)

The vehicle identification number is used to

identify your motorcycle and may be used

to register your motorcycle

with

the licens

ing authority in your state.

FRAME SERIAL NUMBER

The frame serial number is stamped into

the right side of the steering pipe.

Starting serial number:

2EN

042101 (EUR)

NOTE:

The first three digits of these numbers are

for model identifications; the remaining

digits are

the

unit production number.

ENGINE SERIAL NUMBER

The engine serial number is stamped

into

the

crankcase.

Starting serial number:

2WE

050101 (USA)

2WF

012101 (California)

2EN

042101 (EUR)

NOTE:

The first three digits of these numbers are

for model identification; the remaining

digits are the unit production number.

Designs and specifications are subject

change without notice.

-1-

SPECIAL TOOLS

GEN

SPECIAL

TOOLS

Refer to the

list

provided to avoid errors

The proper special tools are necessary for

complete and accurate tune

up and assem

bly. Using the correct special tool will help

prevent damage caused by the use of

improper tools or improvised techniques.

The shape and part number used for the

special tool differ by country,

two types

are provided.

FOR ENGINE SERVICE

when placing an order.

P/N.

90890

Except

for

US,

CDN

Oil

filter wrench

38411

P/N

426

This

tool

is used to remove and install the oil

filter.

-2-

Model

Model code:

Engine starting number:

Vehicle identification number:

Frame starting number:

Basic weight:

With

oil

and

full

fuel tank

GENERAL SPECIFICATIONS/

MAINTENANCE SPECIFICATIONS

VMX12

3JPM (USA)

3JPN (California)

3LRA (EUR)

2WF

012101 (California)

JYA2WEE0*TA050101 (USA)

JYA2WFC0

TA0 12

(

California)

2WE

050101 (USA)

2EN

042101 (EUR)

2EN

042101 (EUR)

283 kg (624

Ib)

(USA)

284 kg (626

Ib)

(California)

281 kg (620

Ib)

(EUR)

SPECIFICATIONS

GENERAL SPECIFICATIONS

MAINTENANCE SPECIFICATIONS

ENGINE

Model

Carbu

Mark

Main

jet

Main air jet

Jet needle

Needle jet

Pilot jet

Pilot air jet

Pilot screw

Pilot outlet

Bypass

Bypass 2

Bypass 3

Valve seat size

Starter jet

Throttle valve size

Fuel level

Engine idling speed

Vacuum pressure at idling speed

(N.J)

(P.J)

(P.A.J.

)

(PS)

(P.O)

(B.P.l)

(B.P.2)

(B.P.3)

(V.S)

(G.S.1)

(G.S.2)

(Th.V)

(F.L)

VMX12

1FK 02 (USA), 2WF 02 (California),

3LR 01

(EUR)

#152.5 (USA, California), #150 (EUR)

82.0

5EZ43-1 (USA), 5EZ50-1 (California),

5EZ19-3 (EUR)

#37.5 (USA, California), #42.5 (EUR)

#90

(USA),#100(California), #95 (EUR)

1/4 (USA),

(California), 2

1/2 (EUR)

0.9

0.8

0.9

1.5

#45

#0.8

#125 (USA, EUR), #130 (California)

~ 17

(0.59

~ 0.66

in)

950 ~ 1,050 r/min (USA, EUR),

1,050 ~ 1,150 r /min (California)

26.7 kPa (200 mmHg, 7.87

Hg) (USA, EUR)

33.3 kPa (250 mmHg, 9.84

Hg) (California)

-3-

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