Page 21 of 70

INSTRUMENT AND CONTROL FUNCTIONS
3-4
2
34
5
6
7
8
9
curs, use a gasoline of a different brand
or premium unleaded fuel. Use of un-
leaded fuel will extend spark plug life
and reduce maintenance costs.
EAU13412
Fuel tank breather hose
Before operating the motorcycle:
Check the fuel tank breather hose
connection.
Check the fuel tank breather hose
for cracks or damage, and replace
it if damaged.
Make sure that the fuel tank
breather hose is not blocked, and
clean it if necessary.
EAU41201
2-stroke engine oil
Make sure that there is sufficient oil in
the 2-stroke engine oil tank. If the
2-stroke engine oil is at or below the
minimum level as shown in the illustra-
tion, add a sufficient amount of the rec-
ommended 2-stroke engine oil as
follows.
TIP
Make sure that the motorcycle is posi-
tioned straight up when checking the
2-stroke engine oil level. A slight tilt to
the side can result in a false reading.
1. Remove the seat. (See page 3-7.)
2. Remove the 2-stroke engine oil
1. Fuel tank breather hose
1
1. Minimum level
1
Page 26 of 70

FOR YOUR SAFETY – PRE-OPERATION CHECKS
4-2
1
2
3
4
5
6
7
8
9
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
Page 38 of 70

PERIODIC MAINTENANCE AND ADJUSTMENT
6-7
1
2
3
4
5
6
7
8
9
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
2
3
41
1
1. Transmission oil drain bolt
Tightening torque:
Transmission oil drain bolt:
20 Nm (2.0 m·kgf, 14.5 ft·lbf)
1
Page 51 of 70

PERIODIC MAINTENANCE AND ADJUSTMENT
6-20
2
3
4
5
67
8
9
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
Page 64 of 70

8-1
1
2
3
4
5
6
7
8
9
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