Page 40 of 67

EAU20170
To check the coolant level
1. Place the vehicle on a level surfa-
ce and hold it in an upright posi-
tion.
NOTE:
The coolant level must be chec-
ked on a cold engine since the
level varies with engine tempera-
ture.
Make sure that the vehicle is
positioned straight up when
checking the coolant level. A
slight tilt to the side can result in
a false reading.
1. Panel
2. Remove panel (1). (See page 6-8.)
3. Check the coolant level in the
coolant reservoir.
NOTE:
The coolant should be between the
minimum and maximum level marks.
4. If the coolant is at or below the
minimum level mark, open the
reservoir cap, add coolant to the
maximum level mark, and then
close the reservoir cap.
ECA10470
CAUTION
If coolant is not available, use
distilled water or soft tap water
instead. Do not use hard water
or salt water since it is harmful
to the engine.
If water has been used instead
of coolant, replace it with coo-
lant as soon as possible, other-
wise the engine may not be
sufficiently cooled and the coo-
ling system will not be protec-
ted against frost and corrosion.
If water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content of
the coolant as soon as possible,
otherwise the effectiveness of
the coolant will be reduced.
EWA10380
s s
WARNING
Never attempt to remove the radia-
tor cap when the engine is hot.
5. Install the panel.
Coolant reservoir capacity:
0,45 L (0.39 Imp.qt)
6
PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
MIN MAX
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Page 62 of 67

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
8-1
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Page 63 of 67

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
8-2
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