Yamaha MOTO-4 1987 User manual

1987

ATV / VTT

OWNER'S MANUAL / MANUEL DU PROPRIÉTAIRE

Model : YFM100T

2HX281997000 *2HX281997000*

IDENTIFICATION NUMBERS RECORD Your key identification number is stamped

on your key as shown in the following

1. KEY NUMBER: illustration. Record this number in the space

provided for reference if you need a new key.

2. FRAME AND ENGINENUMBER:

Key num

Record yourvehicleand enginenumbersin

the spaces provided to assistyou in ordering

spare parts from your Yamaha dealer or for

reference in case your vehicle is stolen. (See

page 3-2)

iNTRODUCTiON

Congratulations on your purchase of the NOTE:

Yamaha YFM100T. This model isthe result of Some data in this manual may become

Yamaha's vast experience in the production outdated due to future improvement on this

of fine sporting, touring, and pacessetting model.If you have any questions about this

racing machines. It represents the high degree manual or your machine, please consult a

of craftsmanship and reliability that have Yamaha dealer.

made Yamaha a leader in these fields.

This manual will give you an understanding TECHNICAL PUBLICATIONS

of the operation, inspection, and basic SERVICE DIVISION

maintenance of this motorcycle. If you have MOTORCYCLE OPERATION

any questions about the operation or YAMAHA MOTOR CO.,LTD

maintenance of your machine, please consult

aYamaha dealer.

YFM100T

OWNER'S MANUAL

1st Edition,September 1986

unauhorized usewithout the written

permission of Yamaha Motor Co.,Ltd.

isexpressly prohibited.

Printed in Japan

PLEASE READ THIS MANUAL CARE- A WARNING indicates special procedures

FULLY AND COMPLETELY BEFORE that must be followed to avoid injury to a

OPERATING THIS MACHINE.machine operator or person inspecting or

repairing the machine.

Particularly important information is distin-

NOTE: __ __

guished in this manual by the following

notations: This manual should beconsidered apermanent

part of this motorcycle and should remain

NOTE: with it even if the machineis subsequently

sold.

A NOTE provides key information to make

procedures easier or clearer.

A CAUTION indicates special procedures that

must be followed to avoid damage to the

machine.

IMPORTANTNOTICE

THIS VEHICLE IS DESIGNED AND MANUFACTURED FOROFF-ROAD

USE ONLY. IT IS ILLEGAL TO OPERATE THIS VEHICLE ON ANY

PUBLIC STREET, ROAD OR HIGHWAY.SUCH USE IS PROHIBITED

BY LAW.

THIS VEHICLE COMPLIES WITH ALMOST ALL STATE OFF-HIGHWAY

NOISE LEVEL AND SPARK ARRESTER LAWS AND REGULATIONS.

PLEASE CHECK YOUR LOCAL RIDING LAWS AND REGULATIONS

BEFORE OPERATING THIS VEHICLE.

CONTENTS

SAFETY INFORMATION ............ 1-1 Speed limiter ..................... 4-3

Ride with care and good judgement ... 1-1 Front brake lever .................. 4-4

Be careful where you ride ........... 1-6 Rear brake lever .................. 4-4

Gasoline ........................ 1-7 Parking brake button ............... 4-5

Modifications .................... 1-8 Rear brake pedal .................. 4-5

Change pedal ..................... 4-6

LOADING PRECAUTIONS ........... 2-1 Fuel tank cap .................... 4-6

Fuel cock ....................... 4-7

DESCRIPTION AND MACHINE Choke lever ...................... 4-7

IDENTIFICATION .................. 3-1 Seat ............................ 4-8

Vehicle identification number ........ 3-2 Storage box ...................... 4-9

Engine serial number ............... 3-2

PRE-OPERATION CHECKS ........... 5-1

CONTROL FUNCTIONS ............. 4-1 Brake ........................... 5-2

Main switch ...................... 4-1 Fuel ............................ 5-2

Indicator lights ................... 4-1 Engine oil ....................... 5-3

Handlebar switches ................ 4-2 Throttle lever .................... 5-3

Throttle lever .................... 4-3

Fittings/Fasteners ................. 5-3 Riding downhill .................... 7-9

Battery ......................... 5-3 Crossing a slope .................... 7-9

Switches ........................ 5-3 Crossing through shallow water ....... 7-11

Tires ........................... 5-4 Riding over rough terrain ........... 7-12

How to measure tire pressure ........ 5-4 Sliding and skidding ............... 7-13

Tire wear limit .................... 5-5

PERIODIC MAINTENANCE AND

OPERATION ...................... 6-1 ADJUSTMENT ...................... 8-1

Starting a cold engine .............. 6-1 Owner's manual and tool kit .......... 8-1

Starting a warm engine ............. 6-3 Periodic maintenance/Lubrication ...... 8-3

Warming up ...................... 6-3 Torque specifications ............... 8-4

Engine break-in ................... 6-3 Engine oil ........................ 8-5

Shifting and acceleration ............ 6-4 Spark plug ........................ 8-6

Gear shifting ..................... 6-5 Ignition timing .................... 8-8

Parking ......................... 6-5 Air filter cleaning .................. 8-8

Hard starting ..................... 6-7 Carburetor adjustment ............. 8-10

Idle speed adjustment .............. 8-10

RIDING YOUR MOTO-4 ............. 7-1 Cam chain adjustment .............. 8-11

Getting to know your moto-4 ........ 7-2 Valve clearance adjustment .......... 8-11

Learning to ride your moto-4 ........ 7-3 Throttle lever adjustment ........... 8-12

Turning your moto-4 ............... 7-5 Brake pedal and brake

Climbing uphill ................... 7-6 lever adjustment .................. 8-12

Front brake adjustment ............ 8-14 Wl RING DIAGRAM

Brake lining inspection ............ 8-15

Clutch adjustment ................ 8-16

Cable inspection and lubrication ..... 8-16

Lubrication of levers, pedals, etc ..... 8-17

Knuckle shaft ................... 8-17

Wheel removal ................... 8-17

Wheel installation ................ 8-17

Tire tread ...................... 8-18

Battery ........................ 8-18

Replenishing the battery fluid ....... 8-19

Fuse replacement ................ 8-20

Replacing the headlight bulb ........ 8-21

Headlight beam adjustment ......... 8-22

Troubleshooting ................. 8-23

Troubleshooting chart ............. 8-24

CLEANING AND STORAGE ......... 9-1

A.Cleaning .................... 9-1

B. Storage ..................... 9-2

SPECIFICATIONS ................. 10-1

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