2007 YAMAHA TTR50 fuel

TABLE OF CONTENTSSAFETY INFORMATION ..................1-1
Location of important labels ............1-4
DESCRIPTION ..................................2-1
Left view ..........................................2-1
Right view ........................................2-2
Controls and instruments.................2-3
INSTRUMENT AND CONTROL
FUNCTIONS.......................................3-1
Main switch .....................................3-1
Handlebar switches ........................3-1
Speed limiter ...................................3-2
Shift pedal .......................................3-2
Brake lever .....................................3-3
Brake pedal ....................................3-3
Fuel tank cap ..................................3-3
Fuel .................................................3-4
Fuel tank breather hose ..................3-5
Fuel cock ........................................3-5
Starter (choke) lever .......................3-6
Seat ................................................3-7
Sidestand ........................................3-7
Starting circuit cut-off system .........3-8
PRE-OPERATION CHECKS..............4-1
Pre-operation check list ..................4-2OPERATION AND IMPORTANT
RIDING POINTS................................. 5-1
Starting and warming up a cold
engine ......................................... 5-1
Starting a warm engine .................. 5-2
Shifting ........................................... 5-2
Engine break-in .............................. 5-3
Parking ........................................... 5-4
PERIODIC MAINTENANCE AND
MINOR REPAIR................................. 6-1
PERIODIC MAINTENANCE ........... 6-1
Periodic maintenance chart for the
emission control system ............. 6-2
General maintenance and
lubrication chart .......................... 6-3
Checking the spark plug ................. 6-5
Engine oil ....................................... 6-6
Cleaning the air filter element ........ 6-8
Cleaning the spark arrester ............ 6-9
Adjusting the carburetor ............... 6-10
Adjusting the engine idling
speed ........................................ 6-11
Adjusting the throttle cable free
play ........................................... 6-11
Valve clearance ............................ 6-12
Tires ............................................. 6-12
Spoke wheels ............................... 6-14
Accessories and replacement
parts .......................................... 6-14Adjusting the brake lever free
play ........................................... 6-14
Adjusting the brake pedal free
play ........................................... 6-15
Checking the front and rear
brake shoes .............................. 6-16
Drive chain slack .......................... 6-16
Cleaning and lubricating the
drive chain ................................ 6-18
Checking and lubricating the
cables ....................................... 6-19
Checking and lubricating the
throttle grip and cable ............... 6-19
Checking and lubricating the
brake and shift pedals .............. 6-19
Checking and lubricating the
brake lever ................................ 6-20
Checking and lubricating the
sidestand .................................. 6-20
Lubricating the swingarm
pivots ........................................ 6-20
Checking the front fork ................. 6-21
Checking the steering .................. 6-21
Checking the wheel bearings ....... 6-22
Battery ......................................... 6-22
Replacing the fuse ....................... 6-24
Supporting the motorcycle ........... 6-25
Front wheel .................................. 6-25
Rear wheel ................................... 6-27
Troubleshooting ........................... 6-29
Troubleshooting chart .................. 6-30U1P681E0.book Page 1 Tuesday, April 18, 2006 2:38 PM

SAFETY INFORMATION
1-3
1Gasoline and exhaust gas


GASOLINE IS HIGHLY FLAMMA-
BLE:
Always turn the engine off when
refueling.
Take care not to spill any gaso-
line on the engine or exhaust
pipe(s)/muffler(s) when refuel-
ing.
Never refuel while smoking or in
the vicinity of an open flame.


Never start the engine or let it run
for any length of time in a closed
area. The exhaust fumes are poi-
sonous and may cause loss of
consciousness and death within a
short time. Always operate your
motorcycle in an area that has ad-
equate ventilation.


Always turn the engine off before
leaving the motorcycle unattended
and remove the key from the main
switch. When parking the motor-
cycle, note the following:
The engine and exhaust pipe(s)/
muffler(s) may be hot, therefore,
park the motorcycle in a placewhere pedestrians or children
are not likely to touch these hot
areas.
Do not park the motorcycle on a
slope or soft ground, otherwise it
may fall over.
Do not park the motorcycle near
a flammable source (e.g., a ker-
osene heater, or near an open
flame), otherwise it could catch
fire.


When transporting the motorcycle
in another vehicle, make sure that
it is kept upright and that the fuel
cock(s) are turned to “ON” or
“RES” (for vacuum type)/“OFF”
(for manual type). If the motorcycle
should lean over, gasoline may
leak out of the carburetor or fuel
tank.


If you should swallow any gaso-
line, inhale a lot of gasoline vapor,
or allow gasoline to get into your
eyes, see your doctor immediately.
If any gasoline spills on your skin
or clothing, immediately wash the
affected area with soap and water
and change your clothes.
U1P681E0.book Page 3 Tuesday, April 18, 2006 2:38 PM

DESCRIPTION
2-1
2
EAU10410
Left view
12 34 5
76
1. Fuel cock (page 3-5)
2. Throttle stop screw (page 6-11)
3. Air filter element (page 6-8)
4. Fuse (page 6-24)
5. Battery (page 6-22)
6. Engine oil drain bolt (page 6-6)
7. Shift pedal (page 3-2)
U1P681E0.book Page 1 Tuesday, April 18, 2006 2:38 PM

DESCRIPTION
2-2
2
EAU10420
Right view
4 532 1
1. Seat (page 3-7)
2. Fuel tank cap (page 3-3)
3. Spark plug cap (page 6-5)
4. Brake pedal (page 3-3)
5. Engine oil filler cap (page 6-6)U1P681E0.book Page 2 Tuesday, April 18, 2006 2:38 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-3
3
EAU12890
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.
EAU12941
Brake pedal The brake pedal is on the right side of
the motorcycle. To apply the rear
brake, press down on the brake pedal.
EAU13180
Fuel tank cap To remove the fuel tank cap, turn it
counterclockwise, and then pull it off.
To install the fuel tank cap, insert it into
the tank opening, and then turn it clock-
wise.
WARNING
EWA11090
Make sure that the fuel tank cap isproperly closed before riding.
1. Brake lever
1
1. Brake pedal
1
1. Fuel tank cap
1
U1P681E0.book Page 3 Tuesday, April 18, 2006 2:38 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-4
3
EAU13211
Fuel Make sure that there is sufficient fuel in
the tank. Fill the fuel tank to the bottom
of the filler tube as shown.
WARNING
EWA10880


Do not overfill the fuel tank, oth-
erwise it may overflow when the
fuel warms up and expands.


Avoid spilling fuel on the hot en-gine.
CAUTION:
ECA10070
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted surfac-es or plastic parts.
EAU41930
For CanadaCAUTION:
ECA11400
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the valves and piston rings,as well as to the exhaust system.
Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line with a pump octane number[(R+M)/2] of 86 or higher, or a research
octane number of 91 or higher. If
knocking (or pinging) occurs, use a
gasoline of a different brand or premi-
um unleaded fuel. Use of unleaded fuel
will extend spark plug life and reduce
maintenance cost.
Gasohol
There are two types of gasohol: gaso-
hol containing ethanol and that contain-
ing methanol. Gasohol containing
ethanol can be used if ethanol content
does not exceed 10%. Gasohol con-
taining methanol is not recommended
by Yamaha because it can cause dam-
age to the fuel system or vehicle perfor-
mance problems.
For Europe, Oceania and South Afri-
ca
1. Fuel tank filler tube
2. Fuel level
Recommended fuel:
REGULAR UNLEADED GASOLINE
ONLY
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)
Recommended fuel:
For Europe: REGULAR UNLEADED
GASOLINE ONLY
For Oceania and South Africa: UN-
LEADED GASOLINE ONLY
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)
U1P681E0.book Page 4 Tuesday, April 18, 2006 2:38 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-5
3
CAUTION:
ECA11400
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the valves and piston rings,as well as to the exhaust system.
Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line with a research octane number of
91 or higher. If knocking (or pinging) oc-
curs, use a gasoline of a different brand
or premium unleaded fuel. Use of un-
leaded fuel will extend spark plug life
and reduce maintenance costs.
EAU13411
Fuel tank breather hose Before operating the motorcycle:

Check the fuel tank breather hose
connection.


Check the fuel tank breather hose
for cracks or damage, and replace
it if damaged.


Make sure that the end of the fuel
tank breather hose is not blocked,
and clean it if necessary.
EAU13561
Fuel cock The fuel cock supplies fuel from the
tank to the carburetor while filtering it al-
so.
The fuel cock has three positions:
OFF
With the lever in this position, fuel will
not flow. Always return the lever to this
position when the engine is not running.
1. Fuel tank breather hose
1. Arrow mark positioned over “OFF”
U1P681E0.book Page 5 Tuesday, April 18, 2006 2:38 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-6
3 ON
With the lever in this position, fuel flows
to the carburetor. Normal riding is done
with the lever in this position.
RESThis indicates reserve. If you run out of
fuel while riding, move the lever to this
position. Fill the tank at the first oppor-
tunity. Be sure to set the lever back to
“ON” after refueling!
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).
1. Arrow mark positioned over “ON”
1. Arrow mark positioned over “RES”
1. Starter (choke) lever “”
1
(a)
(b)
U1P681E0.book Page 6 Tuesday, April 18, 2006 2:38 PM