Page 94 of 104

Motorcycle care and storage
7-4
1
2
3
4
5
67
8
9
10
11
12 2. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
3. Perform the following steps to pro- tect the cylinders, piston rings, etc.
from corrosion.
a. Remove the spark plug caps and spark plugs.
b. Pour a teaspoonful of engine oil into each spark plug bore.
c. Install the spark plug caps onto the spark plugs, and then place
the spark plugs on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several times with the starter. (This will
coat the cylinder walls with oil.)
WARNING! To prevent dam-
age or injury from sparking,
make sure to ground the
spark plug electrodes while
turning the engine
over.
[EWA10952]
e. Remove the spark plug capsfrom the spark plugs, and then
install the spark plugs and the spark plug caps.
4. Lubricate all control cables and the pivoting points of all levers and
pedals as well as of the sidestand/
centerstand.
5. Check and, if necessary, correct the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
6. Cover the muffler outlet with a plastic bag to prevent moisture
from entering it.
7. Remove the battery and fully charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-
cessively cold or warm place [less
than 0 C (30 F) or more than 30
C (90 F)]. For more information
on storing the battery, see page
6-28.
TIPMake any necessary repairs beforestoring the motorcycle.
UB90E2.book 4 ページ 2018年6月5日 火曜日 午後5時40分
Page 95 of 104

8-1
1
2
3
4
5
6
789
10
11
12
Specifications
EAU6999C
Dimensions:Overall length: 2075 mm (81.7 in)
Overall width: 815 mm (32.1 in)
Overall height: 1140 mm (44.9 in)
Seat height:
830 mm (32.7 in)
Wheelbase: 1440 mm (56.7 in)
Ground clearance: 135 mm (5.31 in)
Minimum turning radius:
3.0 m (9.84 ft)Weight:Curb weight:195 kg (430 lb)Engine:Combustion cycle:4-stroke
Cooling system: Liquid cooled
Valve train:
DOHC
Cylinder arrangement: Inline
Number of cylinders: 3-cylinder
Displacement:
847 cm
3
Bore stroke:
78.0 59.1 mm (3.07 2.33 in) Compression ratio:
11.5 : 1
Starting system:
Electric starter
Lubrication system: Wet sump
Engine oil:Recommended brand:
YAMALUBE
SAE viscosity grades: 10W-40
Recommended engine oil grade: API service SG type or higher, JASO stan-
dard MA
Engine oil quantity: Oil change:2.40 L (2.54 US qt, 2.11 Imp.qt)
With oil filter removal: 2.70 L (2.85 US qt, 2.38 Imp.qt)Coolant quantity:Coolant reservoir (up to the maximum level
mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator (including all routes): 1.93 L (2.04 US qt, 1.70 Imp.qt)Air filter:Air filter element:
Oil-coated paper elementFuel:Recommended fuel:Premium unleaded gasoline (Gasohol
[E10] acceptable)
Fuel tank capacity: 14 L (3.7 US gal, 3.1 Imp.gal) Fuel reserve amount:
2.6 L (0.69 US gal, 0.57 Imp.gal)
Fuel injection:Throttle body:ID mark:
B901 00Spark plug(s):Manufacturer/model: NGK/CPR9EA9
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:Wet, multiple-discDrivetrain:Primary reduction ratio:1.681 (79/47)
Final drive: Chain
Secondary reduction ratio:
2.813 (45/16)
Transmission type: Constant mesh 6-speed
Gear ratio: 1st:2.667 (40/15)
2nd: 2.000 (38/19)
3rd:
1.619 (34/21)
4th: 1.381 (29/21)
5th: 1.190 (25/21)
UB90E2.book 1 ページ 2018年6月5日 火曜日 午後5時40分
Page 96 of 104

Specifications
8-2
1
2
3
4
5
6
78
9
10
11
12
6th: 1.037 (28/27)
Chassis:Frame type: Diamond
Caster angle: 25.0
Trail:
103 mm (4.1 in)Front tire:Type:Tubeless
Size:
120/70 ZR17M/C(58W)
Manufacturer/model: BRIDGESTONE/S20F MRear tire:Type:
Tubeless
Size: 180/55 ZR17M/C (73W)
Manufacturer/model: BRIDGESTONE/S20R MLoading:Maximum load:170 kg (375 lb)
* (Total weight of rider, passenger, cargo and accessories)Tire air pressure (measured on cold
tires):1 person:Front:250 kPa (2.50 kgf/cm
2, 36 psi) Rear:
290 kPa (2.90 kgf/cm
2, 42 psi)
2 persons:
Front: 250 kPa (2.50 kgf/cm2, 36 psi)
Rear:
290 kPa (2.90 kgf/cm2, 42 psi)
Front wheel:Wheel type:Cast wheel
Rim size:
17M/C x MT3.50Rear wheel:Wheel type:Cast wheel
Rim size:
17M/C x MT5.50Front brake:Type:Hydraulic dual disc brake
Specified brake fluid:
DOT 4Rear brake:Type:Hydraulic single disc brake
Specified brake fluid:
DOT 4Front suspension:Type:Telescopic fork
Spring:
Coil spring
Shock absorber: Hydraulic damper Wheel travel:
137 mm (5.4 in)
Rear suspension:Type:Swingarm (link suspension)
Spring: Coil spring
Shock absorber:
Gas-hydraulic damper
Wheel travel: 130 mm (5.1 in)Electrical system:System voltage:
12 V
Ignition system: TCI
Charging system: AC magnetoBattery:Model:YTZ10S
Voltage, capacity: 12 V, 8.6 Ah (10 HR)Headlight:Bulb type:Halogen bulbBulb wattage:Headlight:
H4, 60.0 W/55.0 W
Brake/tail light: LED
Front turn signal light: 10.0 W
UB90E2.book 2 ページ 2018年6月5日 火曜日 午後5時40分
Page 101 of 104
Index
10-2
1
2
3
4
5
6
7
8
91011
12
Tires...................................................... 6-15
Tool kit .................................................... 6-2
Traction control system ........................ 3-18
Traction control system indicator light .... 3-5
Traction control system switch ............. 3-14
Troubleshooting .................................... 6-36
Troubleshooting charts ......................... 6-37
Turn signal indicator lights ...................... 3-4
Turn signal light bulb, replacing ............ 6-35
Turn signal switch ................................. 3-14VValve clearance .................................... 6-15
Vehicle identification number.................. 9-1WWheel bearings, checking .................... 6-28
Wheels.................................................. 6-18
UB90E2.book 2 ページ 2018年6月5日 火曜日 午後5時40分
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