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SAFETY INFORMATION
erator is veering wide on a turn
due to excessive speed or under-
cornering (insufficient lean angle
for the speed). Never travel faster
than warranted by conditions.
Ride cautiously in unfamiliar ar-
eas. You may encounter hidden
obstacles that could cause an ac-
cident.
The posture of the operator is im-
portant for proper control. The op-
erator should keep both hands on
the handlebar and both feet on the
operator footrests during operation
to maintain control of the motorcy-
cle.
Never ride under the influence of
alcohol or other drugs.
Protective apparel
The majority of fatalities from motorcy-
cle accidents are the result of head in-
juries. The use of a safety helmet is the
single most critical factor in the preven-
tion or reduction of head injuries.
Always wear an approved helmet.
Wear a face shield or goggles.
Wind in your unprotected eyescould contribute to an impairment
of vision that could delay seeing a
hazard.
The use of a jacket, heavy boots,
trousers, gloves, etc., is effective in
preventing or reducing abrasions
or lacerations.
Never wear loose-fitting clothes,
otherwise they could catch on the
control levers, footrests, or wheels
and cause injury or an accident.
Always wear protective clothing
that covers your legs, ankles, and
feet. The engine or exhaust sys-
tem become very hot during or af-
ter operation and can cause burns.
Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon
monoxide, a deadly gas. Breathing car-
bon monoxide can cause headaches,
dizziness, drowsiness, nausea, confu-
sion, and eventually death.
Carbon Monoxide is a colorless, odor-
less, tasteless gas which may be
present even if you do not see or smell
any engine exhaust. Deadly levels of
carbon monoxide can collect rapidlyand you can quickly be overcome and
unable to save yourself. Also, deadly
levels of carbon monoxide can linger
for hours or days in enclosed or poorly
ventilated areas. If you experience any
symptoms of carbon monoxide poison-
ing, leave the area immediately, get
fresh air, and SEEK MEDICAL TREAT-
MENT.
Do not run engine indoors. Even if
you try to ventilate engine exhaust
with fans or open windows and
doors, carbon monoxide can rap-
idly reach dangerous levels.
Do not run engine in poorly venti-
lated or partially enclosed areas
such as barns, garages, or car-
ports.
Do not run engine outdoors where
engine exhaust can be drawn into
a building through openings such
as windows and doors.
Loading
Adding accessories to your motorcycle
can adversely affect stability and han-
dling if the weight distribution of the mo-
torcycle is changed. To avoid the
PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU40780
Panel wheels
WARNING
EWA10610
The wheels on this model are not de-
signed for use with tubeless tires.
Do not attempt to use tubeless tires
on this model.
To maximize the performance, durabil-
ity, and safe operation of your motorcy-
cle, note the following points regarding
the specified wheels.
The wheel rims should be checked
for cracks, bends, warpage or
damage before each ride. If any
damage is found, have a Yamaha
dealer replace the wheel. Do not
attempt even the smallest repair to
the wheel. A deformed or cracked
wheel must be replaced.
The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
Ride conservatively after changinga tire since the tire must seat itself
on the rim properly. Failure to al-
low proper seating may cause tire
failure, which may result in dam-
age to the motorcycle and injury to
the rider.
EAU22151
Adjusting the front and rear
brake lever free play
Front
Rear
The front and rear brake lever free play
1. Front brake lever free play
1. Rear brake lever free play
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SPECIFICATIONS
EAU2633X
Dimensions:
Overall length:
1245 mm (49.0 in)
Overall width:
575 mm (22.6 in)
Overall height:
715 mm (28.1 in)
Seat height:
485 mm (19.1 in)
Wheelbase:
855 mm (33.7 in)
Ground clearance:
105 mm (4.13 in)
Minimum turning radius:
1300 mm (51.2 in)
Weight:
With oil and fuel:
39.0 kg (86 lb)
Noise and vibration level:
Noise level (77/311/EEC):
PW50 75.1 dB(A)
Vibration on seat (EN1032, ISO5008):
PW50 Will not exceed 0.5 m/s
2
Vibration on handlebar (EN1032, ISO5008):
PW50 Will not exceed 2.5 m/s
2
Engine:
Engine type:
Air cooled 2-stroke
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
49 cm
3
Bore
×
stroke:
40.0
×
39.2 mm (1.57
×
1.54 in)Compression ratio:
6.00 :1
Starting system:
Kickstarter
Lubrication system:
Separate lubrication (Yamaha autolube)
Engine oil:
Type:
YAMALUBE 2 or 2-stroke engine oil (JASO
FC grade) or (ISO EG-C or EG-D grade)
Engine oil quantity:
Quantity:
0.30 L (0.32 US qt, 0.26 Imp.qt)
Transmission oil:
Type:
YAMALUBE 4 (10W-40) or SAE 10W-40
Oil change quantity:
0.30 L (0.32 US qt, 0.26 Imp.qt)
Air filter:
Air filter element:
Wet element
Fuel:
Recommended fuel:
PW50 Regular unleaded gasoline only
PW50Z Regular unleaded gasoline only
(CAN)
PW50Z Unleaded gasoline only
(AUS)(NZL)
Fuel tank capacity:
2.0 L (0.53 US gal, 0.44 Imp.gal)
Carburetor:
Type
×
quantity:
VM12SC x 1
Spark plug (s):
Manufacturer/model:
PW50
NGK/BPR4HS
PW50Z NGK/BPR4HS
DENSO/W14FPL
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Clutch:
Clutch type:
Wet, centrifugal automatic
Transmission:
Primary reduction system:
Spur gear
Primary reduction ratio:
63/33 (1.909)
Secondary reduction system:
Shaft drive
Secondary reduction ratio:
19/15
×
54/11 (6.218)
Chassis:
Frame type:
Steel tube backbone
Caster angle:
25.50 °
Trail:
50.0 mm (1.97 in)
Front tire:
Type:
With tube
Size:
2.50-10 4PR
