INSTRUMENT AND CONTROL FUNCTIONS
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tank cap and add the recommend-
ed oil.
3. Install the 2-stroke engine oil tank
cap.
TIP
Make sure that the 2-stroke engine oil
tank cap is properly closed.
4. Install the seat.
EAU13561
Fuel cock
The fuel cock supplies fuel from the
tank to the carburetor while filtering it al-
so.
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
With the lever in this position, fuel flows
to the carburetor. Normal riding is done
with the lever in this position.
RES
1. 2-stroke engine oil tank
2. 2-stroke engine oil tank cap
Recommended oil:
See page 8-1.
Oil quantity:
0.75 L (0.79 US qt, 0.66 Imp.qt)
1
2
1. Arrow mark positioned over “OFF”
RES
ONFUEL
OFF
1
1. Arrow mark positioned over “ON”
1. Arrow mark positioned over “RES”
ON
FUEL
RES
OFF
1
ON
OFF
ONFUEL RES
1
RES
FOR YOUR SAFETY – PRE-OPERATION CHECKS
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EAU15605
Pre-operation check list
ITEM CHECKS PAGE
Fuel
Check fuel level in fuel tank.
Refuel if necessary.
Check fuel line for leakage.3-3
2-stroke engine oil
Check oil level in oil tank.
If necessary, add recommended oil to specified level.
Check vehicle for oil leakage.3-4
Transmission oil
Check oil level in transmission case.
If necessary, add recommended oil to specified level.6-7
Front brake
Check operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary.6-14, 6-15
Rear brake
Check operation.
Check pedal free play.
Adjust if necessary.6-15
Throttle grip
Make sure that operation is smooth.
Check cable free play.
If necessary, have Yamaha dealer adjust cable free play and lubricate cable
and grip housing.6-11, 6-18
Control cables
Make sure that operation is smooth.
Lubricate if necessary.6-18
Drive chain
Check chain slack.
Adjust if necessary.
Check chain condition.
Lubricate if necessary.6-16
Wheels and tires
Check for damage.
Check tire condition and tread depth.
Check air pressure.
Correct if necessary.6-12, 6-13
PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU19943
Transmission oil
The transmission oil level should be
checked before each ride. In addition,
the transmission oil must be changed
at the intervals specified in the periodic
maintenance and lubrication chart.
To check the transmission oil level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.
TIP
Make sure that the vehicle is positionedstraight up when checking the oil level.
A slight tilt to the side can result in a
false reading.
2. Wait a few minutes until the oil set-
tles, remove the oil filler cap, wipe
the dipstick clean, insert it back
into the oil filler hole (without
screwing it in), and then remove it
again to check the oil level.
TIP
The transmission oil should be be-
tween the minimum and maximum lev-
el marks.
3. If the oil is below the minimum lev-
el mark, add sufficient oil of the
recommended type to raise it to
the correct level.
4. Insert the dipstick into the oil filler
hole, and then tighten the oil filler
cap.
To change the transmission oil
1. Place an oil pan under the trans-
mission to collect the used oil.
2. Remove the oil filler cap and drain
bolt to drain the oil from the trans-
mission.
3. Install the transmission oil drain
bolt, and then tighten it to the spec-
ified torque.
4. Refill with the specified amount of
the recommended transmission
oil, and then install and tighten the
oil filler cap.
1. Transmission oil filler cap
2. Dipstick
3. Maximum level mark
4. Minimum level mark
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1. Transmission oil drain bolt
Tightening torque:
Transmission oil drain bolt:
20 Nm (2.0 m·kgf, 14.5 ft·lbf)
1
PERIODIC MAINTENANCE AND ADJUSTMENT
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NOTICE
ECA10452
In order to prevent clutch slip-
page (since the transmission oil
also lubricates the clutch), do
not mix any chemical additives.
Do not use oils with a diesel
specification of “CD” or oils of a
higher quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.
Make sure that no foreign mate-
rial enters the transmission.
5. Start the engine, and then let it idle
for several minutes while checking
the transmission for oil leakage. If
oil is leaking, immediately turn the
engine off and check for the cause.
EAU41162
Cleaning the air filter element
The air filter element should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
Clean the air filter element more fre-
quently if you are riding in unusually
wet or dusty areas.
1. Remove the air filter case cover by
removing the screws.
2. Pull the air filter element out.3. Remove the sponge material from
the air filter case cover, clean it
with solvent, and then squeeze the
remaining solvent out.
Recommended transmission oil:
See page 8-1.
Oil change quantity:
0.65 L (0.69 US qt, 0.57 Imp.qt)
1. Air filter case cover
2. Screw
2
2
1
1. Sponge material
2. Air filter case cover
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2
PERIODIC MAINTENANCE AND ADJUSTMENT
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4. Apply oil of the recommended type
to the entire surface of the sponge
material, and then squeeze the ex-
cess oil out.
TIP
The sponge material should be wet but
not dripping.
5. Install the sponge material onto
the air filter case cover.
6. Insert the air filter element into the
air filter case.
NOTICE:
Make sure
that the air filter element is prop-
erly seated in the air filter case.
The engine should never be op-erated without the air filter ele-
ment installed, otherwise the
piston(s) and/or cylinder(s) may
become excessively worn.
[ECA10481]
7. Install the air filter case cover by in-
stalling the screws.
EAU41231
Cleaning the spark arrester
The spark arrester should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
WARNING
EWA10980
Always let the exhaust system
cool prior to touching exhaust
components.
Do not start the engine when
cleaning the exhaust system.
TIP
Make sure to select a well-ventilated
area free of combustible materials to
clean the spark arrester.
1. Remove the tailpipe by removing
the bolt, and then pulling it out of
the muffler.
Recommended oil:
Yamaha foam air filter oil or other
quality foam air filter oil
PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU23013
Cleaning and lubricating the
drive chain
The drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly wear
out, especially when riding in dusty or
wet areas. Service the drive chain as
follows.
NOTICE
ECA10581
The drive chain must be lubricated
after washing the motorcycle and
riding in the rain.
1. Remove all dirt and mud from the
drive chain with a brush or cloth.
TIP
For a thorough cleaning, have a
Yamaha dealer remove the drive chain
and soak it in solvent.
2. Spray Yamaha Chain and Cable
Lube or a high-quality spray-type
drive chain lubricant on both sides
and on the middle of the chain,
making sure that all side plates and
rollers have been sufficiently oiled.
EAU41842
Checking and lubricating the
cables
The operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
housing of cables may result in in-
ternal rusting and cause interfer-
ence with cable movement. Replace
damaged cables as soon as possi-
ble to prevent unsafe condi-
tions.
[EWA10711]
EAU23111
Checking and lubricating the
throttle grip and cable
The operation of the throttle grip should
be checked before each ride. In addi-
tion, the cable should be lubricated at
the intervals specified in the periodic
maintenance chart.
Recommended lubricant:
Yamaha Chain and Cable Lube or
4-stroke engine oil
PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU43621
Checking and lubricating the
brake lever
The operation of the brake lever should
be checked before each ride, and the
lever pivots should be lubricated if nec-
essary.
EAU23202
Checking and lubricating the
sidestand
The operation of the sidestand should
be checked before each ride, and the
sidestand pivot and metal-to-metal
contact surfaces should be lubricated if
necessary.
WARNING
EWA10731
If the sidestand does not move up
and down smoothly, have a Yamaha
dealer check or repair it. Otherwise,
the sidestand could contact the
ground and distract the operator, re-
sulting in a possible loss of control.
EAU23272
Checking the front fork
The condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main-
tenance and lubrication chart.
To check the condition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.
WARNING! To avoid injury,
securely support the vehicle so
there is no danger of it falling
over.
[EWA10751]
2. While applying the front brake,
push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
Recommended lubricant:
Lithium-soap-based grease
Recommended lubricant:
Lithium-soap-based grease
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SPECIFICATIONS
EAU2633P
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)
Noise and vibration level:
Noise level (77/311/EEC):
79.3 dB(A)
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)
Vibration on seat (EN1032, ISO5008):
Will not exceed 0.5 m/s
2
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)Vibration on handlebar (EN1032, ISO5008):
Will not exceed 2.5 m/s
2
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)
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:
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:
0.75 L (0.79 US qt, 0.66 Imp.qt)
Transmission oil:
Type:
YAMALUBE 4 (10W-40) or SAE 10W-40
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