Page 33 of 104

Instrument and control functions
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1
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EAU74351
Traction control systemThe traction control system (TCS)
helps maintain traction when accelerat-
ing on slippery surfaces, such as un-
paved or wet roads. If sensors detect
that the rear wheel is starting to slip (un-
controlled spinning), the traction control
system assists by regulating engine
power as needed until traction is re-
stored.
WARNING
EWA15433
The traction control system is not a
substitute for riding appropriately
for the conditions. Traction control
cannot prevent loss of traction due
to excessive speed when entering
turns, when accelerating hard at a
sharp lean angle, or while braking,
and cannot prevent front wheel slip-
ping. As with any vehicle, approach
surfaces that may be slippery with
caution and avoid especially slip-pery surfaces.
The “ ” indicator light flashes when
traction control has engaged. You may
notice slight changes in engine and ex- haust sounds when the system has en-
gaged.
In certain conditions, the traction con-
trol system may be automatically dis-
abled. Should this happen, the “ ”
indicator light and the “ ” warning
light will come on.
The TCS display (page 3-9) indicates
the current TCS setting. There are
three settings.
TCS “OFF”
TCS “OFF” turns the traction control
system off.
TCS “1”
TCS “1” minimizes traction control sys-
tem assist.
TCS “2”
TCS “2” maximizes traction control as-
sist; wheel spin is most strongly con-
trolled.
TIP
Use the traction control switch
(page 3-14) to change TCS set-
tings.
Traction control can be turned on
1. Front wheel sensor
2. Front wheel sensor rotor
1. Rear wheel sensor
2. Rear wheel sensor rotor
1
2
12
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Page 57 of 104

Periodic maintenance and adjustment
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EAU71351
General maintenance an d lubrication chartNO. ITEM CHECK OR MAINTENANCE JOB ODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi) 10000 km
(6000 mi) 20000 km
(12000 mi) 30000 km
(18000 mi) 40000 km
(24000 mi)
1* Diagnostic system
check Perform dynamic inspection using
Yamaha diagnostic tool.
Check the error codes.
2 * Air filter element Replace. Every 40000 km (24000 mi)
3Clutch Check operation.
Adjust.
4 * Front brake Check operation, fluid level, and
for fluid leakage.
Replace brake pads if necessary.
5 * Rear brake Check operation, fluid level, and
for fluid leakage.
Replace brake pads if necessary.
6 * Brake hoses Check for cracks or damage.
Replace. Every 4 years
7 * Brake fluid Change. Every 2 years
8 * Wheels Check runout and for damage.
Replace if necessary.
9*Tires Check tread depth and for
damage.
Replace if necessary.
Check air pressure.
Correct if necessary.
10 * Wheel bearings Check bearing for looseness or
damage.
11 * Swingarm pivot
bearings Check operation and for
excessive play.
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Page 70 of 104

Periodic maintenance and adjustment
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EAU21963
Cast wheelsTo maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified wheels.
The wheel rims should be checked
for cracks, bends, warpage or oth-
er damage 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.
The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
EAU22083
Adjusting the clutch lever free
playMeasure the clutch lever free play as
shown.
Periodically check the clutch lever free
play and, if necessary, adjust it as fol-
lows.
To increase the clutch lever free play,
turn the clutch lever free play adjusting
bolt in direction (a). To decrease the
clutch lever free play, turn the adjusting
bolt in direction (b).
TIPIf the specified free play cannot be ob-
tained as described above or if the
clutch does not operate correctly, have
a Yamaha dealer check the internalclutch mechanism.
1. Clutch lever free play adjusting bolt
2. Clutch lever free playClutch lever free play: 10.0–15.0 mm (0.39–0.59 in)2
1
(b)(a)
UB90E2.book 18 ページ 2018年6月5日 火曜日 午後5時40分
Page 95 of 104

8-1
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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