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6-14
PERIODIC MAINTENANCE AND MINOR REPAIR
6 4. Lift the front of the fuel tank to
position the fuel tank away from
the air filter case. (Do not discon-
nect the fuel hoses!)
EW000071
w8Make sure that the fuel tank is
well supported.
8Do not tilt or pull the fuel tank
too much, otherwise the fuel
hoses may come loose, which
could cause fuel leakage.
5. Remove the relays by pulling
them off their holders, and the air
filter case cover by removing the
screws.6. Pull the sponge material out,
clean it with solvent, and then
squeeze the remaining solvent
out.
7. Apply oil of the recommended
type to the entire surface of the
sponge material, and then
squeeze the excess oil out.
NOTE:
The sponge material should be wet
but not dripping.
1
3
3
2
1
1. Relay (×2)
2. Air filter case cover
3. Screw (×7)1. Sponge material
Recommended oil:
2-stroke engine oil
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6-19
PERIODIC MAINTENANCE AND MINOR REPAIR
6Tire information
This motorcycle is equipped with cast
wheel and tubeless tires.
EW000078
w8The front and rear tires should
be of the same make and
design, otherwise the handling
characteristics of the motorcy-
cle cannot be guaranteed.
8After extensive tests, only the
tires listed below have been
approved for this model by
Yamaha Motor Co., Ltd.
EAU00683
w8Have a Yamaha dealer replace
excessively worn tires.
Besides being illegal, operat-
ing the motorcycle with exces-
sively worn tires decreases
riding stability and can lead to
loss of control.
8The replacement of all wheel-
and brake-related parts,
including the tires, should be
left to a Yamaha dealer, who
has the necessary profession-
al knowledge and experience.
FRONT
Manufacturer Size TypeBRIDGESTONE
100/90-18 56P
TW53
100/90-18 M/C 56P
DUNLOP
100/90-18 56P
D602F
100/90-18 M/C 56P
REAR
Manufacturer Size Type
BRIDGESTONE
130/80-17 65P
TW54
130/80-17 M/C 65P
DUNLOP130/80-17 65P
D602
130/80-17 M/C 65P
EAU03773
Cast wheelsTo maximize the performance, dura-
bility, and safe operation of your
motorcycle, note the following points
regarding the specified wheels.
8The wheel rims should be
checked for cracks, bends or
warpage 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.
8The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced.
An unbalanced wheel can result
in poor performance, adverse
handling characteristics, and a
shortened tire life.
8Ride at moderate speeds after
changing a tire since the tire sur-
face must first be “broken in” for
it to develop its optimal charac-
teristics.
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8-2
SPECIFICATIONS
8
Spark plug
Manufacturer/model NGK/BR9ES
Spark plug gap 0.7–0.8 mm
Clutch typeWet, multiple-disc
Transmission
Primary reduction system Helical gear
Primary reduction ratio 71/22 (3.227)
Secondary reduction system Chain drive
Secondary reduction ratio 3.563
Number of drive chain
sprocket teeth (rear/front) 57/16
Transmission type Constant mesh 6-speed
Operation Left foot
Gear ratio 1st 2.833
2nd 1.875
3rd 1.412
4th 1.143
5th 0.957
6th 0.818
Chassis
Frame type Semi double cradle
Caster angle 26°
Trail 116 mmTires
Front
Type Tubeless
Size 100/90-18 56P or
100/90-18 M/C 56P
Manufacturer/ BRIDGESTONE / TW53
model DUNLOP / D602F
Rear
Type Tubeless
Size 130/80-17 65P or
130/80-17 M/C 65P
Manufacturer/ BRIDGESTONE / TW54
model DUNLOP / D602
Maximum load* 180 kg
179 kg (CH, A)
Air pressure (cold tire)
up to 90 kg load*
Front
175 kPa (1.75 kgf/cm
2, 1.75 bar)
Rear
200 kPa (2.00 kgf/cm
2, 2.00 bar)
90 kg load–Maximum
load*
Front
175 kPa (1.75 kgf/cm
2, 1.75 bar)
Rear
225 kPa (2.25 kgf/cm
2, 2.25 bar)
* Total weight of rider, passenger, cargo and accessories
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