1998 YAMAHA T105 brake

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)

EAA50000
DESCRIPTION
8
1. Tail/Brake light
2. Rear flasher light
3. Side cover
4. Fuel tank cap
5. Front flasher light
6. Kick starter
7. Rear brake pedal
8. Head light
9. Fuel tank
10. Seat lock11. Shift pedal
12. Handlebar switch
13. Speedometer
14. Fuel gauge
15. Main switch/steering lock
16. Throttle grip
17. Front brake lever
18. Indicator light
19. Helmet holder
20. Starter lever
T105(E) O/M-1 9/11/01 11:16 AM Page 8 (1,1)

EAB80001Shift pedal
This motorcycle is equipped with a con-
stant-mesh 4-speed transmission. The shift
pedal is located on the left side of the en-
gine.EAB90001Front brake lever
The front brake lever is located on the right
handlebar. Pull it toward the handlebar to
apply the front brake.
16
1Shift pedal N. Neutral1Front brake lever
T105(E) O/M-1 9/11/01 11:16 AM Page 16 (1,1)

EAB90101Rear brake pedal
The rear brake pedal is on the right side of
the motorcycle. Press down on the brake
pedal to apply the rear brake.EAC01300*Fuel tank cap
To add fuel, open the seat. Then remove
the fuel tank cap by turning it counterclock-
wise.
(See page 20 to open the seat.)
17
1Rear brake pedal1Fuel tank cap
T105(E) O/M-1 9/11/01 11:16 AM Page 17 (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)

2. Tire inspection
Always check the tires before operat-
ing the motorcycle. If center tread
depth reaches the limit as shown, if
the tire has a nail or glass fragments
in it, or if the side wall is cracked, con-
tact a Yamaha dealer immediately and
have the tire replaced.wIt is dangerous to ride with a worn-out
tire. When a tire tread begins to show
lines, have a Yamaha dealer replace the
tire immediately. Brakes, tires, and related
wheel parts replacement should be left to
a Yamaha Service Technician.
27
1. Tread depth 2. Side wall 3. Wear indicator
Size
FRONT
2.25-17-4PR
Size
REAR
2.50-17-4PR
Minimum tire tread depth
1.0 mm
(front and rear)
T105(E) O/M-2 9/11/01 11:17 AM Page 27 (1,1)

To decelerate
1. Close the throttle and apply both the
front and the rear brakes at the same
time to slow the motorcycle.
2. Downshift through the gears and
when the motorcycle is almost com-
pletely stopped, shift into nutral.
Recommend shift point:
33
Gear position Recommend speed
4th
3rd 0~40 km/h
3rd 2rd 0~30 km/h
2nd 1st 0~15 km/h
T105(E) O/M-2 9/11/01 11:17 AM Page 33 (1,1)