Page 4 of 80
IMPORTANT MANUAL INFORMATION
EAU10132
Particularly important information is distinguished in this manual by the following notations:
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible injury
or death.
A WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
A NOTICE indicates special precautions that must be taken to avoid damage to the
vehicle or other property.
A TIP provides key information to make procedures easier or clearer.
WARNING
NOTICETIP
U40BE0E0.book Page 1 Wednesday, January 7, 2009 10:05 AM
Page 15 of 80

INSTRUMENT AND CONTROL FUNCTIONS
3-1
3
EAU10460
Main switch/steering lock The main switch/steering lock controls
the ignition and lighting systems, and is
used to lock the steering. The various
positions are described below.
EAU47821
(on)
All electrical circuits are supplied with
power, the meter lighting, taillight, li-
cense plate light and auxiliary lights
come on, and the engine can be start-
ed. The key cannot be removed.
TIPThe headlight comes on automatically
when the engine is started and stays onuntil the key is turned to“”.
EAU47791
(off)
All electrical systems are off. The key
can be removed.WARNING
EWA15350
Never turn the key to“” or“”
while the vehicle is moving. Other-
wise the electrical systems will be
switched off, which may result inloss of control or an accident.
EAU47801
(lock)
The steering is locked, and all electrical
systems are off. The key can be re-
moved.To lock the steering
1. Turn the handlebars all the way to
the left.
2. Push the key in from the“” posi-
tion, release it, and then turn it
to“”.
3. Remove the key.1. Push.
2. Release.
3. Turn.
123
U40BE0E0.book Page 1 Wednesday, January 7, 2009 10:05 AM
Page 16 of 80
INSTRUMENT AND CONTROL FUNCTIONS
3-2
3To unlock the steering
Insert the key and turn it to“”.
EAU10981
Indicator lights
EAU11020
Turn signal indicator light“”
This indicator light flashes when the
t u r n s i g n a l s w i t c h i s p u s h e d t o t h e l e f t o r
right.
EAU11060
Neutral indicator light“”
This indicator light comes on when the
transmission is in the neutral position.
EAU37611
Gear position indicator lights “1”
“2” “3”, and “4”
The respective indicator light comes on
when the transmission is in the 1st,
2nd, 3rd or 4th gear position.
EAU11080
High beam indicator light“”
This indicator light comes on when the
high beam of the headlight is switched
on.
1. Turn signal indicator light“”
2. Neutral indicator light“”
3. Gear position indicator light “1” “2” “3” “4”
4. High beam indicator light“”
12
3
4
U40BE0E0.book Page 2 Wednesday, January 7, 2009 10:05 AM
Page 22 of 80

INSTRUMENT AND CONTROL FUNCTIONS
3-8
3
EAU13590
Starter (choke) lever“” Starting a cold engine requires a richer
air-fuel mixture, which is supplied by
the starter (choke).
Move the lever in direction (a) to turn on
the starter (choke).
Move the lever in direction (b) to turn off
the starter (choke).
EAU47860
Kickstarter If the engine fails to start by pushing the
start switch, try to start it by using the
kickstarter. With the transmission in
neutral, fold out the kickstarter lever,
move it down lightly with your foot until
the gears engage, and then push it
down smoothly but forcefully.
EAU13891
Seat To open the seat
1. Insert the key in the lock, and then
turn it as shown.
2. Fold the seat up.
To close the seat
1. Fold the seat down, and then push
it down to lock it in place.
2. Remove the key.TIPMake sure that the seat is properly se-cured before riding.
1. Starter (choke) lever“”
1
(a)
(b)
1. Kickstarter
1
1. Seat lock
1
U40BE0E0.book Page 8 Wednesday, January 7, 2009 10:05 AM
Page 27 of 80

OPERATION AND IMPORTANT RIDING POINTS
5-1
5
EAU15951
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10271
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which could cause an accidentor injury.
EAU47850
Starting and warming up a
cold engine 1. Turn the key to“”.
2. Shift the transmission into the neu-
tral position. (See page 5-2.) The
neutral indicator light should come
on. If not, ask a Yamaha dealer to
check the electrical circuit.
3. Place the vehicle on the center-
stand.
WARNING
EWA14200
Before starting the engine, make
sure the transmission is in neutral
and that the vehicle is placed on thecenterstand.
4. Turn the starter (choke) on and
completely close the throttle. (See
page 3-8.)
5. Start the engine by pushing the
start switch or by pushing the kick-
starter lever down.
If the engine fails to start by push-
ing the start switch, release the
switch, wait a few seconds, and
then try again. Each starting at-
tempt should be as short as possi-ble to preserve the battery. Do not
crank the engine more than 10
seconds on any one attempt. If the
engine does not start with the
starter motor, try using the kick-
starter.
6. After starting the engine, move the
starter (choke) back halfway.
NOTICE: For maximum engine
life, never accelerate hard when
the engine is cold!
[ECA11041]
7. When the engine is warm, turn the
starter (choke) off.TIPThe engine is warm when it responds
normally to the throttle with the starter(choke) turned off.
U40BE0E0.book Page 1 Wednesday, January 7, 2009 10:05 AM
Page 30 of 80
OPERATION AND IMPORTANT RIDING POINTS
5-4
5
EAU17213
Parking When parking, stop the engine, and
then remove the key from the main
switch.
WARNING
EWA10311
Since the engine and exhaust
system can become very hot,
park in a place where pedestri-
ans or children are not likely to
touch them and be burned.
Do not park on a slope or on soft
ground, otherwise the vehicle
may overturn, increasing the
risk of a fuel leak and fire.
Do not park near grass or other
flammable materials whichmight catch fire.
U40BE0E0.book Page 4 Wednesday, January 7, 2009 10:05 AM
Page 55 of 80

PERIODIC MAINTENANCE AND ADJUSTMENT
6-25
6 To remove the battery
1. Make sure the key is turned
to“”.
2. Disconnect the negative battery
lead first, then the positive battery
lead.3. Pull the battery out of its compart-
ment.
To charge the battery
Have a Yamaha dealer charge the bat-
tery as soon as possible if it seems to
have discharged. Keep in mind that the
battery tends to discharge more quickly
if the vehicle is equipped with optional
electrical accessories.
NOTICE
ECA16520
To charge a VRLA (Valve Regulated
Lead Acid) battery, a special (con-
stant-voltage) battery charger is re-
quired. Using a conventional batterycharger will damage the battery. If
you do not have access to a con-
stant-voltage battery charger, have a
Yamaha dealer charge your battery.
To store the battery
1. If the vehicle will not be used for
more than one month, remove the
battery, fully charge it, and then
place it in a cool, dry place. When
removing the battery, refer to “To
remove the battery”.
2. If the battery will be stored for more
than two months, check it at least
once a month and fully charge it if
necessary.
3. Fully charge the battery before in-
stallation.
4. After installation, make sure that
the battery leads are properly con-
nected to the battery terminals.NOTICE
ECA16530
Always keep the battery charged.
Storing a discharged battery cancause permanent battery damage.
1. Battery box cover
2. Screw
1
2
1. Battery
2. Positive battery lead (red)
3. Negative battery lead (black)
1
3
2
U40BE0E0.book Page 25 Wednesday, January 7, 2009 10:05 AM
Page 56 of 80
![YAMAHA T105 2009 Owners Manual PERIODIC MAINTENANCE AND ADJUSTMENT
6-26
6To install the battery
1. Place the battery in its compart-
ment. NOTICE: Be sure to install
the battery with its terminals
facing backward.
[ECA16590]
2. Ma YAMAHA T105 2009 Owners Manual PERIODIC MAINTENANCE AND ADJUSTMENT
6-26
6To install the battery
1. Place the battery in its compart-
ment. NOTICE: Be sure to install
the battery with its terminals
facing backward.
[ECA16590]
2. Ma](/manual-img/51/51341/w960_51341-55.png)
PERIODIC MAINTENANCE AND ADJUSTMENT
6-26
6To install the battery
1. Place the battery in its compart-
ment. NOTICE: Be sure to install
the battery with its terminals
facing backward.
[ECA16590]
2. Make sure the key is turned
to“”.
3. Connect the positive battery lead
first, then the negative battery
lead.
4. Install the battery box cover by in-
stalling the screw.
5. Close the seat.
EAU47671
Replacing the fuse The fuse holder is located under the
seat. (See page 3-8.)
If the fuse is blown, replace it as fol-
lows.
1. Turn the key to“” and turn off all
electrical circuits.
2. Remove the battery box cover by
removing the screw.
3. Remove the blown fuse, and then
install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a higher amperage
rating than recommended toavoid causing extensive dam-
age to the electrical system and
possibly a fire.
[EWA15131]
4. Turn the key to“” and turn on
the electrical circuits to check if the
devices operate.
5. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
6. Install the battery box cover by in-
stalling the screw.
1. Battery box cover
2. Screw
1
2
1. Fuse
2. Spare fuseSpecified fuse:
10.0 A
12
U40BE0E0.book Page 26 Wednesday, January 7, 2009 10:05 AM