2009 YAMAHA T105 transmission

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.
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Neutral indicator light“”
This indicator light comes on when the
transmission is in the neutral position.
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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.
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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
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INSTRUMENT AND CONTROL FUNCTIONS
3-4
3
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Dimmer switch“/”
Set this switch to“” for the high
beam and to“” for the low beam.
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Turn signal switch“/”
To signal a right-hand turn, push this
switch to“”. To signal a left-hand
turn, push this switch to“”. When re-
leased, the switch returns to the center
position. To cancel the turn signal
lights, push the switch in after it has re-
turned to the center position.
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Horn switch“”
Press this switch to sound the horn.
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Start switch“”
Push this switch to crank the engine
with the starter. See page 5-1 for start-
ing instructions prior to starting the en-
gine.
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Shift pedal The shift pedal is located on the left
side of the engine. This motorcycle is
equipped with a constant-mesh 4
speed transmission.TIPUse your toes to shift up and your heelto shift down.
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Brake lever The brake lever is located at the right
handlebar grip. To apply the front
brake, pull the lever toward the handle-
bar grip.
1. Shift pedal
2. Neutral position
1
2
21
2
3
4 N
N3
2
1 4
1. Brake lever
1
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INSTRUMENT AND CONTROL FUNCTIONS
3-8
3
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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).
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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.
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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
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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.
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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

OPERATION AND IMPORTANT RIDING POINTS
5-2
5
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Starting a warm engine Follow the same procedure as for start-
ing a cold engine with the exception
that the starter (choke) is not required
when the engine is warm.
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Shifting Shifting gears lets you control the
amount of engine power available for
starting off, accelerating, climbing hills,
etc. When shifting gears, fully return the
throttle grip. The use of the shift pedal
is shown in the illustration.NOTICE
ECA15180


Make sure that the transmission
is completely shifted into gear.


Be sure to fully close the throttle
grip when shifting.


Make sure the neutral indicator
light comes on when the trans-
mission is in the neutral posi-tion.
1. Shift pedal
2. Neutral position
1
2
21
2
3
4 N
N3
2
1 4
U40BE0E0.book Page 2 Wednesday, January 7, 2009 10:05 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-18
6


Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.


As the brake pads wear, it is nor-
mal for the brake fluid level to grad-
ually go down. However, if the
brake fluid level goes down sud-
denly, have a Yamaha dealer
check the cause.
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Changing the brake fluid Have a Yamaha dealer change the
brake fluid at the intervals specified in
the TIP after the periodic maintenance
and lubrication chart. In addition, have
the oil seals of the brake master cylin-
der and caliper as well as the brake
hose replaced at the intervals listed be-
low or whenever they are damaged or
leaking.

Oil seals: Replace every two
years.


Brake hose: Replace every four
years.
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Drive chain slack The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU47680
To check the drive chain slack
1. Place the motorcycle on the cen-
terstand.
2. Shift the transmission into the neu-
tral position.
3. Remove the drive chain slack
check hole cap.
4. Spin the rear wheel several times
to locate the tightest portion of the
drive chain.
5. Measure the drive chain slack as
shown.1. Drive chain slack check hole cap
1
U40BE0E0.book Page 18 Wednesday, January 7, 2009 10:05 AM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
1885 mm (74.2 in)
Overall width:
675 mm (26.6 in)
Overall height:
1040 mm (40.9 in)
Seat height:
770 mm (30.3 in)
Wheelbase:
1200 mm (47.2 in)
Ground clearance:
130 mm (5.12 in)
Minimum turning radius:
1900 mm (74.8 in)Weight:With oil and fuel:
101.0 kg (223 lb)Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
110.3 cm³
Bore × stroke:
51.0 × 54.0 mm (2.01 × 2.13 in)
Compression ratio:
9.30 :1
Starting system:
Electric starter and kickstarter
Lubrication system:
Wet sump
Engine oil:Type:
SAE 10W-30, SAE 10W-40, SAE 20W-40
or SAE 20W-50
Recommended engine oil grade:
API service SE, SF, SG type or higher,
JASO standard MA
Engine oil quantity:
Periodic oil change:
0.80 L (0.85 US qt, 0.70 Imp.qt)Air filter:Air filter element:
Dry elementFuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
4.2 L (1.11 US gal, 0.92 Imp.gal)
Fuel reserve amount:
1.0 L (0.26 US gal, 0.22 Imp.gal)
Carburetor:Type × quantity:
VM17SH x 1Spark plug (s):Manufacturer/model:
TORCH/A7RTC
Manufacturer/model:
NGK/CR6HSA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Wet, multiple-disc and centrifugal
automaticTransmission:Primary reduction system:
Spur gear
Primary reduction ratio:
67/18 (3.722)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
35/15 (2.333)
Transmission type:
Constant mesh 4-speed
Operation:
Left foot operation
Gear ratio:
1st:
38/12 (3.166)
2nd:
33/17 (1.941)
3rd:
29/21 (1.380)
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U40BE0E0.book Page 1 Wednesday, January 7, 2009 10:05 AM