1998 YAMAHA T105 check engine light

GIVE SAFETY THE RIGHT OF WAY ...............5
GENERAL NOTE..............................................6
DESCRIPTION ..................................................8
MOTORCYCLE IDENTIFICATION ...................9
Identification numbers record ...................9
Key identification number .......................10
Frame serial number ................................10
Engine serial number ...............................10
CONTROL FUNCTIONS................................11
Main switch ...............................................11
Indicator lights ..........................................12
Instrument panel.......................................13
Handlebar switches ..................................14
Shift pedal .................................................16
Front brake lever .......................................16
Rear brake pedal .......................................17
Fuel tank cap .............................................17
Starter lever 1..........................................18
Kick starter .................................................18Steering lock..............................................19
Seat ............................................................20
Helmet holder ...........................................21
Side cover removal...................................21
PRE-OPERATION CHECKS ...........................22
Fuel .............................................................24
Engine oil ...................................................25
Tires ............................................................26
OPERATION AND IMPORTANT
RIDING POINTS.............................................27
Starting and warming up a
cold engine ................................................28
Starting a warm engine ...........................30
Shifting.......................................................31
To start out and accelerate.......................31
To decelerate .............................................33
Engine break-in .........................................34
Parking .......................................................36
3
EAA30001
CONTENTS
T105(E) O/M-1 9/11/01 11:16 AM Page 3 (1,1)

4
PERIODIC MAINTENANCE AND
MINOR REPAIR..............................................37
Tool kit ........................................................38
Periodic maintenance/lubrication ...........39
Engine oil ...................................................41
Air filter ......................................................44
Throttle cable adjustment ........................46
Carburetor adjustment .............................47
Idle speed adjustment ..............................47
Spark plug inspection ..............................48
Front brake adjustment ............................50
Rear brake adjustment .............................51
Brake light switch adjustment .................52
Checking the brake shoes ........................52
Drive chain slack check ............................53
Drive chain slack adjustment ..................54
Drive chain lubrication .............................56
Brake lever and pedal ...............................57
Center and sidestand ...............................57Front fork inspection ................................58
Battery ........................................................59
Replenishing the battery fluid .................61
Fuse replacement .....................................62
Troubleshooting ........................................63
CLEANING AND STORAGE .........................64
Cleaning .....................................................64
Storage ......................................................64
SPECIFICAITIONS .........................................66
T105(E) O/M-1 9/11/01 11:16 AM Page 4 (1,1)

22
PRE-OPERATION CHECKS
Before using this motorcycle, check the following points:
Item Routine Page
Fuel9Check fuel level/top up as required. 24
Engine oil9Check oil level/add oil as required. 25, 41~43
9Check operation, condition and free play. Adjust if necessary.
BrakeMake sure the brankes are working properly by checking at 50~52
low speed shortly.
Throttle grip/Housing9Check for smooth operation. Lubricate/Adjust if necessary.—
Drive chain9Check chain slack and condition. Adjust if necessary. 53~56
Wheels/Tires9Check tire pressure, wear, damage and spoke tightness. 26~27
Control/Meter cable9Check for smooth operation. Lubricate if necessary.—
Brake and shift pedal shafts9Check for smooth operation. Lubricate if necessary. 57
Brake lever pivots9Check for smooth operation. Lubricate if necessary. 57
Center and sidestand pivots9Check for smooth operation. Lubricate if necessary. 57
Fittings/fasteners9Check all chassis fittings and fasteners.
—
9Tighten/Adjust, if necessary.
Lights and signals9Check for proper operation.—
Switches9Check for proper operation.—
Battery9Check fluid level, top-up with distilled water if necessary. 59~61
T105(E) O/M-1 9/11/01 11:16 AM Page 22 (1,1)

EAH48201*Engine oil
1. Oil level measurement
a. Place the motorcycle on the center-
stand. Warm up the engine for several
minutes.EUU03901NOTE:
Be sure the motorcycle is positioned
straight up when checking the oil level. A
slight tilt toward the side can result in false
readings.b. With the engine stopped, wait a few
minutes and then remove the oil level
gauge.
c. Wipe the oil level gauge off with a
clean rag and insert it in the filler hole
without screwing it in.
41
1Oil level gauge2Upper level3Lower level
T105(E) O/M-2 9/11/01 11:17 AM Page 41 (1,1)