2003 YAMAHA TZR50 ECO mode

EAU13431
Catalytic converter
This model is equipped with a cataly-
tic converter in the exhaust system.
EWA10860
s s
WARNING
The exhaust system is hot after
operation. Make sure that the
exhaust system has cooled down
before doing any maintenance
work.
ECA10700
CAUTION
The following precautions must be
observed to prevent a fire hazard or
other damages.
Use only unleaded gasoline.
The use of leaded gasoline will
cause unrepairable damage to
the catalytic converter.
Never park the vehicle near
possible fire hazards such as
grass or other materials that
easily burn.
Do not allow the engine to idle
too long.
EAU13460
2-stroke engine oil
1. 2-stroke engine oil tank
2. 2-stroke engine oil tank cap
Make sure that there is sufficient oil in
the 2-stroke engine oil tank. Add the
recommended 2-stroke engine oil if
necessary.
NOTE:
Make sure that the 2-stroke engine oil
tank cap is properly installed.
EAU13560
Fuel cock
1. Fuel reserve switch
The fuel cock supplies fuel from the
tank to the carburetor while filtering it
also.
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.
ON
RES OFFFUEL
Recommended oil:
Yamalube 2 or equivalent 2-stroke
engine oil (JASO grade “FC”, or
ISO grades “EG-C” or “EG-D”)
Oil quantity:
1,35 L (1,18 Imp.qt)
3
INSTRUMENT AND CONTROL FUNCTIONS
3-6
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2. Remove the blown fuse, and then
install a new fuse of the specified
amperage.
ECA10640
CAUTION
Do not use a fuse of a higher ampe-
rage rating than recommended to
avoid causing extensive damage to
the electrical system and possibly a
fire.
3. Turn the key to “ON” and turn on
the electrical circuits to check if the
devices operate.
4. If the fuse immediately blows
again, have a Yamaha dealer check
the electrical system.
EAU23800
Replacing the headlight bulb
This model is equipped with a quartz
bulb headlight. If the headlight bulb
burns out, replace it as follows.
1. Remove the headlight bulb cover,
and then disconnect the head-
light lead connectors.
2. Unhook the headlight bulb hol-der, and then remove the defecti-
ve bulb.
EWA10790
s s
WARNING
Headlight bulbs get very hot. The-
refore, keep flammable products
away from a lit headlight bulb, and
do not touch the bulb until it has
cooled down.
3. Place a new headlight bulb into
position, and then secure it with
the bulb holder.
ECA10660
CAUTION
Do not touch the glass part of the
headlight bulb to keep it free from
oil, otherwise the transparency of
the glass, the luminosity of the
bulb, and the bulb life will be adver-
sely affected. Thoroughly clean off
any dirt and fingerprints on the
headlight bulb using a cloth mois-
tened with alcohol or thinner.
4. Connect the headlight lead con-
nectors, and then install the bulb
cover.
5. Have a Yamaha dealer adjust the
headlight beam if necessary.
EAU24281
Replacing a turn signal light
bulb or the tail/brake light
bulb
1. Remove the lens by removing the
screws.
2. Remove the defective bulb by
pushing it in and turning it coun-
terclockwise.
3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
Specified fuse:
10 A
6
PERIODIC MAINTENANCE AND MINOR REPAIR
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EAU26339
Dimensions
Overall length
2007 mm
Overall width
675 mm
Overall height
1065 mm
Seat height
815 mm
Wheelbase
1330 mm
Ground clearance
144 mm
Minimum turning radius
2900 mm
Weight
With oil and fuel
124.2 kg
Engine
Engine type
Liquid cooled 2-stroke
Cylinder arrangement
Forward-inclined single cylinder
Displacement
49.7 cm
3
Bore x stroke
40.3 x 39.0 mm
Compression ratio
6.85 :1
Starting system
Electric starter
Lubrication system
Separate lubrication (Yamaha autolube)
Transmission oil
Oil change quantity
0.75 L
Coolant reservoir capacity (up to the maxi-
mum level mark)
0.71 L
Radiator capacity (including all routes)
0.70 L
Air filter element
Wet element
Fuel
Fuel tank capacity
13.8 L
Fuel reserve amount
2.2 L
Carburetor
Manufacturer
Dell’Orto
Type x quantity
PHBN 16 NS / 1
Spark plug (s)
Manufacturer/model
NGK/BR9ES
Spark plug gap
0.6-0.7 mm
Clutch type
Wet, multiple-disc
Transmission
Primary reduction system
Helical gear
Primary reduction ratio
71 x 20 (3.550)
Secondary reduction system
Chain driveSecondary reduction ratio
47 x 11 (4.270)
Transmission type
Constant mesh 6-speed
Gear ratio
1st
36 x 12 (3.000)
2nd
33 x 16 (2.062)
3rd
29 x 19 (1.526)
4th
27 x 22 (1.227)
5th
25 x 24 (1.041)
6th
24 x 25 (0.960)
Chassis
Frame type
Double cradle
Caster angle
25.00 degree
Trail
92.0 mm
Front tire
Type
Tubeless
Size
100/80-17 52H
Manufacturer/model
PIRELLI
Rear tire
Type
Tubeless
8
SPECIFICATIONS
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Size
130/70-17 62H
Manufacturer/model
PIRELLI
Maximum load
195 kg
Tire air pressure (measured on cold
tires)
Loading condition
0-90 kg
Front
180 kPa
Rear
200 kPa
Loading condition
90-180 kg
Front
190 kPa
Rear
230 kPa
Front wheelWheel type
Cast wheel
Rim size
MT 2.75x17”
Rear wheelWheel type
Cast wheel
Rim size
MT 3.50x17”
Front brakeType
Single disc brakeRecommended fluid
DOT 4
Rear brakeType
Single disc brake
Recommended fluid
DOT 4
Front suspensionType
Telescopic fork
Spring/shock absorber type
Coil spring/oil damper
Wheel travel
130.0 mm
Rear suspension
Type
Swingarm
Spring/shock absorber type
Coil-gas spring/oil damper
Wheel travel
102.0 mm
Electrical systemIgnition system
DC. CDI
Charging system
CDI magneto
Model
YT4L-BS
Voltage, capacity
12 V, 3.0 Ah
Bulb type
Incandescence
Bulb voltage, wattage x quantityHeadlight
12 V, 25 W/25.0 W x 2
Tail/brake light
12 V, 5.0 W/21.0 W x 1
Front turn signal light
12 V, 16.0 W
Rear turn signal light
12 V, 10.0 W x 2
Neutral indicator light
LED
Oil level warning light
LED
Turn signal indicator light
LED
Coolant temperature warning light
LED
Main fuse
10.0 A
8
SPECIFICATIONS
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EAU26351
Identification numbers
Record the key identification number,
vehicle identification number and
model label information in the spaces
provided below for assistance when
ordering spare parts from a Yamaha
dealer or for reference in case the
vehicle is stolen.
KEY IDENTIFICATION NUMBER:
VEHICLE IDENTIFICATION NUMBER:
MODEL LABEL INFORMATION:
EAU26420
Frame serial number
1. Frame serial number
The frame serial number is stamped
into the steering head pipe.
NOTE:
The frame serial number is used to
identify your motorcycle and may be
used to register your motorcycle with
the licensing authority in your area.
1. Key identification number
EAU26390
Key identification number
The key identification number is
stamped into the key.Record this
number in the space provided and
use it for reference when ordering a
new key.
9
CONSUMER INFORMATION
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EAU26480
Model label
1. Model label
The model label is affixed to the frame
under the seat. (See page 3-7.)
Record the information on this label in
the space provided. This information
will be needed when ordering spare
parts from a Yamaha dealer.
9
CONSUMER INFORMATION
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