
Table of contentsSafety information........................... 1-1
Description ....................................... 2-1
Left view ......................................... 2-1
Right view ....................................... 2-2
Controls and instruments................ 2-3
Instrument and co ntrol functions... 3-1
Immobilizer system ..... .................... 3-1
Main switch/steering lock................ 3-2
Indicator lights and warning
lights ............................................ 3-4
Multi-function meter unit ................. 3-6
D-mode (drive mode).................... 3-13
Handlebar switches ...................... 3-14
Clutch lever................................... 3-15
Shift pedal..... ............................ .... 3-16
Brake lever ................................... 3-16
Brake pedal .................................. 3-17
ABS .............................................. 3-17
Traction control syst em ................ 3-18
Fuel tank cap ................................ 3-19
Fuel............................................... 3-20
Fuel tank overflow hose and breather hose ............................ 3-22
Catalytic converter ........................ 3-22
Seat .............................................. 3-23
Storage compartment ................... 3-23
Adjusting the front fork.................. 3-24
Adjusting the shock absorber assembly ................................... 3-25 Luggage strap holders .
................ 3-27
Sidestand ..................................... 3-27
Ignition circuit cut- off system ........ 3-28
Auxiliary DC connector................. 3-30
For your safety – pre-operation
checks .............................................. 4-1
Operation and important riding
points ................................................ 5-1
Starting the engine ......................... 5-1
Shifting ........................................... 5-2
Tips for reducing fuel consumption ............................... 5-3
Engine break-in .............................. 5-3
Parking ........................................... 5-4
Periodic maintenance and
adjustment ....................................... 6-1
Owner’s tool kit............................... 6-2
Periodic maintenance chart for the emission control system ............. 6-3
General maintenance and
lubrication chart .......................... 6-5
Checking the spark plugs ............... 6-9
Canister ........................................ 6-10
Engine oil ..................................... 6-10
Coolant ......................................... 6-13
Air filter element ........................... 6-14
Checking the engine idling speed ........................................ 6-14 Checking the throttle grip free
play ........................................... 6-15
Valve clearance ........................... 6-15
Tires ............................................. 6-15
Cast wheels ................................. 6-18
Adjusting the clutch lever free play ........................................... 6-18
Checking the brake lever free
play ........................................... 6-19
Brake light switches ..................... 6-19
Checking the front and rear
brake pads................................ 6-20
Checking the brake fluid level ...... 6-20
Changing the brake fluid .............. 6-22
Drive chain slack.......................... 6-22
Cleaning and lubricating the drive chain ................................ 6-24
Checking and lubricating the cables ....................................... 6-24
Checking and lubricating the
throttle grip and cable ............... 6-25
Checking and lubricating the brake and shift pedals .............. 6-25
Checking and lubricating the brake and clutch levers ............ 6-26
Checking and lubricating the sidestand .................................. 6-26
Lubricating the swingarm
pivots ........................................ 6-27
Checking the front fork................. 6-27
Checking the steering .................. 6-28UB90E2.book 1 ページ 2018年6月5日 火曜日 午後5時40分

Operation and important riding points
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NOTICE
ECA10261
Even with the transmission in
the neutral position, do not
coast for long periods of time
with the engine off, and do not
tow the motorcycle for long dis-
tances. The transmission is
properly lubricated only when
the engine is running. Inade-
quate lubrication may damage
the transmission.
Always use the clutch while
changing gears to avoid damag-
ing the engine, transmission,
and drive train, which are not
designed to withstand theshock of forced shifting.
EAU16811
Tips for reducing fuel
consumptionFuel consumption depends largely on
your riding style. Consider the following
tips to reduce fuel consumption:
Shift up swiftly, and avoid high en-
gine speeds during acceleration.
Do not rev the engine while shifting
down, and avoid high engine
speeds with no load on the engine.
Turn the engine off instead of let-
ting it idle for an extended length of
time (e.g., in traffic jams, at traffic
lights or at railroad crossings).
EAU16842
Engine break-inThere is never a more important period
in the life of your engine than the period
between 0 and 1600 km (1000 mi). For
this reason, you should read the follow-
ing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1600 km (1000 mi). The various parts in
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that might
result in engine overheating must be
avoided.
EAU17094
0–1000 km (0–600 mi)
Avoid prolonged operation above 5600
r/min. NOTICE: After 1000 km (600
mi) of operation, the engine oil must
be changed and the oil filter car-
tridge or element replaced.
[ECA10303]
1000–1600 km (600–1000 mi)
Avoid prolonged operation above 6800
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Periodic maintenance and adjustment
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23 * Rear suspension
relay arm and
connecting arm
pivoting points Check operation.
24 Engine oil Change (warm engine before
draining).
Check oil level and vehicle for oil leakage.
25 Engine oil filter
cartridge Replace.
26 * Cooling system Check coolant level and vehicle
for coolant leakage.
Change. Every 3 years
27 * Front and rear brake
switches Check operation.
28 * Moving parts and
cables Lubricate.
29 * Throttle grip
housing and cable Check operation and free play.
Adjust the throttle cable free play
if necessary.
Lubricate the throttle grip housing and cable.
30 * Lights, signals and
switches Check operation.
Adjust headlight beam.
NO. 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)
UB90E2.book 7 ページ 2018年6月5日 火曜日 午後5時40分

Periodic maintenance and adjustment
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EAU72800
TIP
Air filter
This model’s air filter is equipped wi th a disposable oil-coated paper elemen t, which must not be cleaned with com-
pressed air to avoid damaging it.
The air filter element needs to be replaced more fr equently when riding in unusually wet or dusty areas.
Hydraulic brake service
Regularly check and, if necessary, correct the brake fluid level.
Every two years replace the internal components of t he brake master cylinders and calipers, and change the brake
fluid. Replace the brake hoses every four years and if cracked or damaged.
UB90E2.book 8 ページ 2018年6月5日 火曜日 午後5時40分

Periodic maintenance and adjustment
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EAU36112
CanisterThis model is equipped with a canister
to prevent the discharging of fuel vapor
into the atmosphere. Before operating
this vehicle, make sure to check the fol-
lowing:
Check each hose connection.
Check each hose and canister for
cracks or damage. Replace if dam-
aged.
Make sure that the canister breath-
er is not blocked, and if necessary,
clean it.
EAU1990D
Engine oilThe engine oil level should be checked
regularly. In addition, the oil must be
changed and the oil filter cartridge re-
placed at the intervals specified in the
periodic maintenance chart.NOTICE
ECA11621
In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do not
mix any chemical additives. Do
not use oils with a diesel speci-
fication of “CD” or oils of a high-
er quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.
Make sure that no foreign mate-rial enters the crankcase. To check the engine oil level
1. After warming up the engine, wait a few minutes for the oil to settle.
2. With the vehicle on a level surface, hold it upright for an accurate read-
ing.
3. Look at the check window located at the bottom-right side of the
crankcase.
TIPThe engine oil should be between theminimum and maximum level marks.
4. If the engine oil is at or below the minimum level mark, remove the
1. Canister
2. Canister breather hose
1
2
Recommended engine oil: See page 8-1.
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)
1. Engine oil filler cap
2. Engine oil level check window
3. Maximum level mark
4. Minimum level mark
1
2
34
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oil filler cap and add oil.
5. Check the engine oil filler cap O-ring. Replace if damaged.
6. Install the engine oil filler cap.
To change the engine oil (and filter) 1. Start the engine, warm it up briefly, and then turn it off.
2. Place an oil pan under the engine to collect the used oil.
3. Remove the engine oil filler cap, and then the engine oil drain bolt
and gasket.
TIPSkip steps 4–6 if the oil filter cartridge isnot being replaced.
4. Remove the oil filter cartridge with an oil filter wrench.
TIPAn oil filter wrench is available at aYamaha dealer.
5. Apply a thin coat of clean engine oil to the O-ring of the new oil filter
cartridge.
1. Engine oil filler cap
2. O-ring
21
1. Engine oil drain bolt
2. Gasket
21
1. Oil filter wrench
2. Oil filter cartridge
2
1
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Periodic maintenance and adjustment
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TIPMake sure that the O-ring is properlyseated. 6. Install the new oil filter cartridge, and then tighten to the specified
torque. 7. Install the engine oil drain bolt with
a new gasket, and then tighten the
bolt to the specified torque.
8. Pour the specified amount of the recommended oil into the crank-
case.
TIPUsing a funnel is recommended.
9. After checking the engine oil filler cap O-ring, install the filler cap.TIPWipe off any spilled oil before startingthe engine.
10. Start the engine and let it idle for several minutes while checking for
oil leaks. If any leakage is found,
immediately stop the engine and
check for the cause.
NOTICE
ECA10402
If the oil level warning light flickers
or remains on even if the oil level is
correct, immediately turn the engine
off and have a Yamaha dealer checkthe vehicle.
11. Turn the engine off, wait a few min- utes until the oil settles, and then
check the oil level one last time.
1. O-ring
1. Torque wrench
1
Tightening torque:Oil filter cartridge:17 N·m (1.7 kgf·m, 13 lb·ft)
Tightening torque: Engine oil drain bolt:43 N·m (4.3 kgf·m, 32 lb·ft)
UB90E2.book 12 ページ 2018年6月5日 火曜日 午後5時40分

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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