2008 YAMAHA TZR50 length

tem, an electric failure could
result, which could cause a dan-
gerous loss of lights or engine
power.
Gasoline 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
system when refueling.
• 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
adequate ventilation.
Always turn the engine off before
leaving the motorcycle unatten-
ded and remove the key from the
main switch. When parking the
motorcycle, note the following:
• The engine and exhaust sys-
tem may be hot, therefore,park the motorcycle in a place
where pedestrians or children
are not likely to touch these hot
areas.
• Do not park the motorcycle on
a slope or soft ground, other-
wise it may fall over.
• Do not park the motorcycle
near a flammable source (e.g. a
kerosene heater, or near an
open flame), otherwise it could
catch fire.
When transporting the motorcy-
cle in another vehicle, make sure
that it is kept upright and that the
fuel cock is turned to “ON” or
“RES” (for vacuum type) / “OFF”
(for manual type). If it should lean
over, gasoline may leak out of the
carburetor or fuel tank.
If you should swallow any gasoli-
ne, inhale a lot of gasoline vapor,
or allow gasoline to get into your
eyes, see your doctor immedia-
tely. If any gasoline spills on your
skin or clothing, immediately
wash the affected area with soap
and water and change your clot-
hes.
1
SAFETY INFORMATION t
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EAU15950
EWA10270
s s
WARNING
Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer
regarding any control or func-
tion that you do not thoroughly
understand.
Never start the engine or ope-
rate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of cons-
ciousness and death within a
short time. Always make sure
that there is adequate ventila-
tion.
Before starting out, make sure
that the sidestand is up. If the
sidestand is not raised comple-
tely, it could contact the
ground and distract the opera-
tor, resulting in a possible loss
of control.
EAU16050
Starting a cold engine
In order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:
The transmission is in the neutral
position.
The transmission is in gear with
the clutch lever pulled and the
sidestand up.
EWA10290
s s
WARNING
Before starting the engine,
check the function of the igni-
tion circuit cut-off system
according to the procedure
described on page 3-11.
Never ride with the sidestand
down.
1. Turn the fuel cock lever to “ON”.
2. Turn the key to “
f” and make
sure that the engine stop switch
is set to “
f”.
3. Shift the transmission into the
neutral position.
NOTE:
When the transmission is in the neu-
tral position, the neutral indicator lightshould be on, otherwise have a
Yamaha dealer check the electrical
circuit.
4. Turn the starter (choke) on and
completely close the throttle.
(See page 3-8.)
5. Start the engine by pushing the
start switch.
NOTE:
If the engine fails to start, release the
start switch, wait a few seconds, and
then try again. Each starting attempt
should be as short as possible to pre-
serve the battery. Do not crank the
engine more than 10 seconds on any
one attempt.
ECA11410
CAUTION:
The 2-stroke engine oil level war-
ning light should come on when the
start switch is pushed, and it
should go off when the start switch
is released. If the warning light flic-
kers or remains on after starting,
immediately stop the engine, and
then check the 2-stroke engine oil
level and the vehicle for oil leakage.
5
OPERATION AND IMPORTANT RIDING POINTS
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ECA10260
CAUTION:
Even with the transmission in
the neutral position, do not
coast for long periods of time
with the engine off, and do not
tow the motorcycle for long
distances. The transmission is
properly lubricated only when
the engine is running. Inade-
quate lubrication may damage
the transmission.
Always use the clutch while
changing gears to avoid dama-
ging the engine, transmission,
and drive train, which are not
designed to withstand the
shock of forced shifting.
EAU16800
Tips for reducing fuel
consumption
Fuel consumption depends largely on
your riding style. Consider the follo-
wing tips to reduce fuel consumption:
Turn the starter (choke) off as
soon as possible.
Shift up swiftly, and avoid high
engine speeds during accelera-
tion.
Do not rev the engine while shif-
ting down, and avoid high engine
speeds with no load on the engi-
ne.
Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at
traffic lights or at railroad cros-
sings).
EAU16830
Engine break-in
There is never a more important
period in the life of your engine than
the period between 0 and 1000 km
(600 mi). For this reason, you should
read the following material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1000 km (600 mi). The various parts in
the engine wear and polish themsel-
ves to the correct operating clearan-
ces. During this period, prolonged
full-throttle operation or any condition
that might result in engine overhea-
ting must be avoided.
EAU17130
0~500 km (0~300 mi)
Avoid prolonged operation above
4.000 r/min.
After every hour of operation, stop the
engine, and then let it cool for five to
ten minutes.
Vary the engine speed from time to
time. Do not operate the engine at
one set throttle position.
5
OPERATION AND IMPORTANT RIDING POINTS
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DimensionsOverall length
2202 mm (86.7 in)
Overall width
689 mm (27.1 in)
Overall height
1175 mm (46.3 in)
Seat height
820 mm (32.3 in)
Wheelbase
1341 mm (52.8 in)
Ground clearance
151 mm (5.94 in)
Minimum turning radius
2900 mm (114.2 in)
WeightWith oil and fuel
124 kg (273 lb)
EngineEngine type
Liquid cooled 2-stroke
Cylinder arrangement
Forward-inclined single cylinder
Displacement
49.7 cm
3(3.03 cu*in)
Bore x stroke
40.3 x 39.0 mm (1.58 x 1.53 in)
Compression ratio
11.5:1
Starting system
Electric starter
Lubrication system
Separate lubrication (Yamaha autolube)
Oil type or gradeRecommended engine oil grade
SAE10W30 type SE motor oil
Cooling systemRadiator capacity (including all routes)
0.70 L (0.74 US qt) (0.62 Imp qt)
Coolant reservoir capacity (up to the maxi-
mum level mark)
0.29L (0.31 US qt) ( 0.26 Imp qt)
Air filterAir filter element
Wet element
Recommended fuelRecommended fuel
Unleaded fuel
Fuel tank capacity
13.8 L (3.65 US gal) (3.04 Imp gal)
Fuel reserve amount
2.2 L (0.58 US gal) (0.48 Imp gal)
CarburetorManufacturer
Dell’Orto
Type x quantity
PHBN 16 x 1
Spark plug (s)Manufacturer/model
NGK/BR 9 ES
Spark plug gap
0.6 ~ 0.7 mm (0.023 ~ 0.027 in)
ClutchClutch type
Wet, multiple-disc
TransmissionPrimary reduction system
Helical gear
Primary reduction ratio
71 x 20 (3.55)
Secondary reduction system
Chain drive
Secondary reduction ratio
60 x 11 (5.45)
Transmission type
Constant mesh 6-speed
Operation
Left foot operation
Gear ratio1-
36 x 12 (3.00)
2-
33 x 16 (2.062)
3-
29 x 19 (1.526)
4-
27 x 22 (1.227)
5-
25 x 24 (1.041)
6-
24 x 25 (0.960)
ChassisFrame type
Double cradle
Caster angle
25 º
Trail
90 mm (3.54 in)
8
SPECIFICATIONS
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