SAFETY INFORMATION
1-3
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electric failure could result, which
could cause a dangerous loss of
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
pipe/muffler 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 ad-
equate ventilation.
Always turn the engine off before
leaving the motorcycle unattend-
ed. When parking the motorcycle,
note the following:
The engine and exhaust pipe/
muffler 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, 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 is turned to “OFF”. If the mo-
torcycle 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 immediate-
ly. If any gasoline spills on your
skin or clothing, immediately wash
the affected area with soap and
water and change your clothes.
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OPERATION AND IMPORTANT RIDING POINTS
EAU41680
WARNING
EWA14620
This model is designed for
off-road use only. Become thor-
oughly familiar with all operat-
ing controls and their functions
before riding. Consult a Yamaha
dealer regarding any control or
function that you do not thor-
oughly understand.
Never start the engine or oper-
ate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of con-
sciousness 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 com-
pletely, it could contact the
ground and distract the opera-
tor, resulting in a possible loss
of control.
EAU41151
Starting and warming up a
cold engine
1. Turn the fuel cock lever to “ON”.
2. Set the engine stop switch to
“RUN”.
3. Shift the transmission into the neu-
tral position.
WARNING
EWA14410
Be sure to shift the transmis-
sion into neutral before starting
the engine.
Never ride with the sidestand
down.
4. Turn the starter (choke) on and
completely close the throttle. (See
page 3-6.)
5. Start the engine by pushing the
kickstarter lever down.
6. After starting the engine, move the
starter (choke) back halfway.
CAUTION:
ECA11130
For maximum engine life, always
warm the engine up before starting
off. Never accelerate hard when the
engine is cold!
7. When the engine is warm, turn the
starter (choke) off.
NOTE:
The engine is warm when it responds
normally to the throttle with the starter
(choke) turned off.
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SPECIFICATIONS
EAU2633K
Dimensions:
Overall length:
1540 mm (60.6 in)
Overall width:
640 mm (25.2 in)
Overall height:
880 mm (34.6 in)
Seat height:
635 mm (25.0 in)
Wheelbase:
1055 mm (41.5 in)
Ground clearance:
185 mm (7.28 in)
Minimum turning radius:
1700 mm (66.9 in)
Weight:
With oil and fuel:
61.0 kg (134 lb)
Engine:
Engine type:
Air cooled 2-stroke
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
79.0 cm
3
Bore
×
stroke:
47.0
×
45.6 mm (1.85
×
1.80 in)
Compression ratio:
6.60 :1
Starting system:
KickstarterLubrication 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:
0.95 L (1.00 US qt) (0.84 Imp.qt)
Transmission oil:
Type:
YAMALUBE 4 (10W30) or SAE 10W30
Oil change quantity:
0.65 L (0.69 US qt) (0.57 Imp.qt)
Air filter:
Air filter element:
Wet element
Fuel:
Recommended fuel:
Regular unleaded gasoline only
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)
Unleaded gasoline only (AUS)(NZL)
Fuel tank capacity:
4.9 L (1.29 US gal) (1.08 Imp.gal)
Fuel reserve amount:
1.0 L (0.26 US gal) (0.22 Imp.gal)
Carburetor:
Manufacturer:
MIKUNI
Type
×
quantity:
VM15SC x 1
Spark plug (s):
Manufacturer/model:
NGK/BP6HS (AUS)(NZL)
NGK/BPR6HS
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)
Manufacturer/model:
DENSO/W20FP (AUS)(NZL)
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Clutch:
Clutch type:
Wet, multiple-disc automatic
Transmission:
Primary reduction system:
Helical gear
Primary reduction ratio:
66/21 (3.143)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
32/15 (2.133)
Transmission type:
Constant mesh 3-speed
Operation:
Left foot operation
Gear ratio:
1st:
39/12 (3.250)
2nd:
29/16 (1.812)
