2011 YAMAHA TTR50 engine

MOTORCYCLE CARE AND STORAGE
8-4
82. For motorcycles equipped with a
fuel cock that has an “OFF” posi-
tion: Turn the fuel cock lever to
“OFF”.
3. Drain the carburetor float chamber
by loosening the drain bolt; this will
prevent fuel deposits from building
up. Pour the drained fuel into the
fuel tank.
4. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
5. Perform the following steps to pro-
tect the cylinder, piston rings, etc.
from corrosion.
a. Remove the spark plug cap
and spark plug.
b. Pour a teaspoonful of engine oil
into the spark plug bore.
c. Install the spark plug cap onto
the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several
times with the starter. (This will
coat the cylinder wall with oil.)WARNING! To prevent dam-
age or injury from sparking,
make sure to ground the
spark plug electrodes while
turning the engine over.
[EWA10951]
e. Remove the spark plug cap
from the spark plug, and then
install the spark plug and the
spark plug cap.
6. Lubricate all control cables and the
pivoting points of all levers and
pedals as well as of the side-
stand/centerstand.
7. Check and, if necessary, correct
the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
8. Cover the muffler outlet with a
plastic bag to prevent moisture
from entering it.
9. Remove the battery and fully
charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-cessively cold or warm place [less
than 0 °C (30 °F) or more than 30
°C (90 °F)]. For more information
on storing the battery, see page
7-23.
TIPMake any necessary repairs before
storing the motorcycle.
U1P685E0.book Page 4 Tuesday, April 20, 2010 3:18 PM

SPECIFICATIONS
9-1
9
Dimensions:Overall length:
1305 mm (51.4 in)
Overall width:
595 mm (23.4 in)
Overall height:
775 mm (30.5 in)
Seat height:
555 mm (21.9 in)
Wheelbase:
925 mm (36.4 in)
Ground clearance:
135 mm (5.31 in)
Minimum turning radius:
1400 mm (55.1 in)Weight:With oil and fuel:
57 kg (126 lb)Noise and vibration level:Noise level (77/311/EEC):
TT-R50E 76.7 dB(A)@4250 r/min
Vibration on seat (EN1032, ISO5008):
TT-R50E Will not exceed 0.5 m/s²
Vibration on handlebar (EN1032, ISO5008):
TT-R50E Will not exceed 2.5 m/s²Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
49 cm³
Bore × stroke:
36.0 × 48.6 mm (1.42 × 1.91 in)Compression ratio:
9.50 :1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-30, 10W-40, 10W-50, 15W-40,
20W-40 or 20W-50
Recommended engine oil grade:
API service 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:
Wet element
Fuel:Recommended fuel:
TT-R50E Regular unleaded gasoline or
gasohol (E10)
TT-R50EA Regular unleaded gasoline or
gasohol (E10) (CAN)
TT-R50EA Unleaded gasoline or gasohol
(E10) (AUS)(NZL)
Fuel tank capacity:
3.1 L (0.82 US gal, 0.68 Imp.gal)
Fuel reserve amount:
0.4 L (0.11 US gal, 0.09 Imp.gal)Carburetor:Type × quantity:
VM11 x 1Spark plug(s):Manufacturer/model:
NGK/CR7HSA
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:
37/13 (2.846)
–20–10 0
1020 30 40 50 ˚C 10 30 50 70 90 110 0 130 ˚F
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U1P685E0.book Page 1 Tuesday, April 20, 2010 3:18 PM

INDEX
AAir filter element, cleaning ...................... 7-8BBattery .................................................. 7-23
Brake lever ............................................. 4-3
Brake lever, checking and lubricating ... 7-20
Brake lever free play, adjusting ............ 7-15
Brake pedal ............................................ 4-3
Brake pedal, checking and
lubricating ........................................... 7-21
Brake pedal free play, adjusting ........... 7-16
Brake shoes, checking ......................... 7-17CCables, checking and lubricating .......... 7-20
Carburetor, adjusting ............................ 7-11
Care ........................................................ 8-1
Clutch free play, adjusting .................... 7-15DDrive chain, cleaning and lubricating .... 7-19
Drive chain slack .................................. 7-18EEngine break-in ...................................... 6-3
Engine idling speed .............................. 7-11
Engine oil ................................................ 7-7
Engine, starting a warm .......................... 6-2
Engine stop switch.................................. 4-2FFront fork, checking .............................. 7-22
Fuel......................................................... 4-4
Fuel cock ................................................ 4-6
Fuel tank breather hose.......................... 4-5
Fuel tank cap .......................................... 4-4
Fuse, replacing ..................................... 7-25
HHandlebar switches ................................. 4-1IIdentification numbers ........................... 10-1LLabels, location .......................................1-1MMain switch ............................................. 4-1
Maintenance and lubrication, periodic..... 7-3
Maintenance, emission control system ... 7-2
Matte color, caution .................................8-1
Model label ............................................ 10-1PParking ....................................................6-4
Part locations .......................................... 3-1SSafety information ...................................2-1
Seat ......................................................... 4-7
Shifting ....................................................6-2
Shift pedal ............................................... 4-3
Shift pedal, checking ............................. 7-17
Sidestand ................................................ 4-8
Sidestand, checking and lubricating...... 7-21
Spark arrester, cleaning ........................ 7-10
Spark plug, checking ...............................7-6
Specifications .......................................... 9-1
Speed limiter ........................................... 4-2
Starter (choke) lever................................ 4-7
Starting and warming up a cold engine ... 6-1
Starting circuit cut-off system .................. 4-8
Start switch.............................................. 4-2
Steering, checking.................................7-22
Storage....................................................8-3
Supporting the motorcycle .................... 7-25Swingarm pivots, lubricating ................. 7-21
TThrottle cable free play, adjusting ......... 7-12
Throttle grip and cable, checking and
lubricating ........................................... 7-20
Tires ...................................................... 7-13
Troubleshooting .................................... 7-29
Troubleshooting chart ........................... 7-31VValve clearance .................................... 7-13
Vehicle Emission Control Information
label (For Canada).............................. 10-2
Vehicle identification number ................ 10-1WWheel bearings, checking..................... 7-23
Wheel (front) ......................................... 7-26
Wheel (rear) .......................................... 7-28
Wheels .................................................. 7-14
U1P685E0.book Page 1 Tuesday, April 20, 2010 3:18 PM