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6-17
PERIODIC MAINTENANCE AND MINOR REPAIR
6 Tire inspection
The tires must be checked before
each ride. If the center tread depth
reaches the specified limit, if the tire
has a nail or glass fragments in it, or
if the sidewall is cracked, have a
Yamaha dealer replace the tire imme-
diately.
NOTE:
The tire tread depth limits may differ
from country to country. Always com-
ply with the local regulations.
Tire information
This motorcycle is equipped with tube
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.
a
1
1. Side wall
a. Tire tread depthMinimum tire tread depth
(front and rear)1.6 mm
FRONT
Manufacturer Size Model
CHENG SHIN80/100-18 47P
C-916
80/100-18 M/C 47P
INOUE80/100-18 47P
MARBELLA NF27
80/100-18 M/C 47P
REAR
Manufacturer Size Model
CHENG SHIN 130/90-15 M/C 66P C-915
INOUE 130/90-15 M/C 66P
MARBELLA NR31
EAU00681
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.
8It is not recommended to
patch a punctured tube. If
unavoidable, however, patch
the tube very carefully and
replace it as soon as possible
with a high-quality product.
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8-2
SPECIFICATIONS
8
Fuel
Type Regular unleaded gasoline
Fuel tank capacity 11 L
Reserve amount 3.4 L
Carburetor
Manufacturer MIKUNI
Model ×quantity BDS26 ×1
Spark plug
Manufacturer/model NGK/CR7HSA or
DENSO/U22FSR-U
Gap 0.6–0.7 mm
Clutch typeWet, multiple-disc
Transmission
Primary reduction system Spur gear
Primary reduction ratio 3.400
Secondary reduction system Chain drive
Secondary reduction ratio 3.688
Number of drive chain
sprocket teeth (rear/front) 59/16
Transmission type Constant mesh 5-speed
Operation Left foot operationGear ratio 1st 2.643
2nd 1.684
3rd 1.261
4th 1.000
5th 0.852
Chassis
Frame type Double cradle
Caster angle 35°
Trail 135 mm
Tires
Front
Type With tube
Size 80/100-18 47P
80/100-18 M/C 47P
Manufacturer/ CHENG SHIN/C-916
model INOUE/MARBELLA NF27
Rear
Type With tube
Size 130/90-15 M/C 66P
Manufacturer/ CHENG SHIN/C-915
model INOUE/MARBELLA NR31
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8-3
SPECIFICATIONS
8
Maximum load* 183 kg
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
200 kPa (2.00 kgf/cm
2, 2.00 bar)
*Total weight of rider, passenger, cargo and accessories
Wheels
Front
Type Spoke wheel
Size 18 ×1.60
Rear
Type Spoke wheel
Size 15 M/C ×MT 3.00
Brakes
Front
Type Single disc brake
Operation Right hand
Fluid DOT 4Rear
Type Drum brake
Operation Right foot
Suspension
Front
Type Telescopic fork
Rear
Type Swingarm
Spring/shock absorber
Front
Type Coil spring/oil damper
Rear
Type Coil spring/oil damper
Wheel travel
Front 140 mm
Rear 100 mm
Electrical system
Ignition system Transistorized coil ignition
(digital)
Charging system
Type A.C. magneto
Standard output 14 V, 23 A @ 5,000 r/min
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