Page 52 of 124

Instrument and control functions
4-32
1
2
34
5
6
7
8
9
10
11
12
TIP
This mark identifies the recom-
mended fuel for this vehicle as
specified by European regulation
(EN228).
Check that gasoline nozzle has thesame identifier when fueling.
Your Yamaha engine has been de-
signed to use premium unleaded gaso-
line with a research octane number of
95 or higher. If knocking (or pinging) oc-
curs, use a gasoline of a different
brand. Use of unleaded fuel will extend
spark plug life and reduce maintenance
costs.
Gasohol
There are two types of gasohol: gaso- hol containing ethanol and that contain-
ing methanol. Gasohol containing
ethanol can be used if the ethanol con-
tent does not exceed 10% (E10). Gas-
ohol containing methanol is not
recommended by Yamaha because it
can cause damage to the fuel system
or vehicle performance problems.
EAU80200
Fuel tank overflow hoseBefore operating the vehicle:
Check the fuel tank overflow hose
connection.
Check the fuel tank overflow hose
for cracks or damage, and replace
it if necessary.
Make sure that the end of the fuel
tank overflow hose is not blocked,
and clean it if necessary.
Make sure that the end of the fuel
tank overflow hose is positioned as
shown.
E5
E10
1. Clamp
2. Paint mark
3. Fuel tank overflow hose
1
2
3
BX4-9-E2.book 32 ページ 2018年9月6日 木曜日 午後4時39分
Page 62 of 124
Instrument and control functions
4-42
1
2
34
5
6
7
8
9
10
11
12
EAU57952
Ignition circuit cut-off systemThis system prevents in-gear engine
starts unless the clutch lever is pulled
and the sidestand is up. Also, it will stop
the running engine should the sides-
tand be lowered while the transmission
is in gear.
Periodically check this system via the
following procedure.TIP
This check is most reliable if per-
formed with a warmed-up engine.
See pages 4-2 and 4-3 for switchoperation information.
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Page 63 of 124

Instrument and control functions
4-43
1
2
345
6
7
8
9
10
11
12
With the engine turned off:
1. Move the sidestand down.
2. Set engine stop s witch to run position.
3. T urn m ain switch to on position.
4. Shift tr ansmission into neutr al.
5. Push the start switch.
Does the engine start?
With the engine still r unning:
6. Move the sidestand up.
7. Pull the clutch lever.
8. Shift tr ansmission into gear.
9. Move the sidestand down.
Does the en gine stall?
After the engine has stalled:
10.
Move the sidestand up.
11. Pull the clutch lever.
12. Push the start switch.
Does the engine start?
The system is OK. The motorcycle can be ridden.
YES NO
YES
NO
YES
NO
The neutral switch ma y not be working.
The motorcycle should not be ridden until
checked b y a Yamaha dealer.
The clutch s witch may not be working.
The motorcycle should not be ridden until
checked b y a Yamaha dealer.The sidestand s witch may not be working.
The motorcycle should not be ridden until
checked b y a Yamaha dealer.If a malfunction is found, have the vehicle
inspected before riding.
WARNING
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Page 64 of 124

5-1
1
2
3
45
6
7
8
9
10
11
12
For your safety – pre-operation checks
EAU15599
Inspect your vehicle each time you use it to make sure the vehi cle is in safe operating condition. Always follow the inspection
and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWA11152
Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage.
Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided inthis manual, have the vehicle inspected by a Yamaha dealer.
Before using this vehicle, check the following points:
ITEM CHECKS PAGE
Fuel Check fuel level in fuel tank.
Refuel if necessary.
Check fuel line for leakage.
Check fuel tank breather hose and overflow hose for obstructions, cracks or
damage, and check hose connections. 4-31, 4-32
Engine oil Check oil level in engine.
If necessary, add recommended oil to specified level.
Check vehicle for oil leakage. 7-12
Coolant Check coolant level in reservoir.
If necessary, add recommended coolant to specified level.
Check cooling system for leakage. 7-16
Front brake Check operation.
If soft or spongy, have Yamaha dealer bleed hydraulic system.
Check brake pads for wear.
Replace if necessary.
Check fluid level in reservoir.
If necessary, add specified brake fluid to specified level.
Check hydraulic system for leakage. 7-24
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Page 67 of 124

6-1
1
2
3
4
567
8
9
10
11
12
Operation and important riding points
EAU15952
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10272
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which could cause an accidentor injury.
EAU73461
TIPThis model is equipped with:
an inertial measurement unit (IMU)
that will stop the engine in case of
turnover. In this case, turn the
main switch off (and then back on)
before attempting to restart the en-
gine. Failing to do so will prevent
the engine from starting even
though the engine will crank when
the start switch is pushed.
an engine auto-stop system. The
engine stops automatically if left
idling for 20 minutes. In this case,
simply push the start switch to re-start the engine.
EAU79303
Starting the engineIn order for the ignition circuit cut-off
system (page 4-42) to enable starting,
one of the following conditions must be
met:
The transmission is in the neutral
position.
The transmission is in gear with
the clutch lever pulled and the sid-
estand up.
To start the engine
1. Insert the key into the main switch.
2. Set the Stop/Run/Start switch to “”.
3. Turn the main switch (key) to “ON”.
4. Confirm the following warning lights and indicator lights perform a
self-check.
Engine trouble warning light
Oil pressure and coolant tem-
perature warning light
ABS warning light
Fuel level warning light
Auxiliary system warning light
Shift indicator light
Stability control indicator light
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Page 68 of 124

Operation and important riding points
6-2
1
2
3
4
56
7
8
9
10
11
12
Immobilizer system indicator
light
TIP
The oil pressure and coolant tem-
perature warning light will come
on, go off briefly, and then remain
on until the engine is started.
The ABS warning light will remainon until the vehicle starts moving.
NOTICE
ECA24110
If a warning or indicator light does
not work as described above, have aYamaha dealer check the vehicle.
5. Shift the transmission into the neu- tral position (or hold the clutch le-
ver pulled with the sidestand up).
6. Push the start switch, and release it when the engine starts.
If the engine does not start within 5
seconds of pressing the start
switch, wait 10 seconds before
pressing the switch again to allow
battery voltage to restore.
NOTICE
ECA11043
For maximum engine life, never ac-
celerate hard when the engine iscold!
EAU67082
ShiftingShifting gears lets you control the
amount of engine power available for
starting off, accelerating, climbing hills,
etc.
This model is equipped with QSS. See
pages 3-3 and 4-16.TIPTo shift into neutral ( ), gently de-
press the shift pedal from 2nd gear, orslightly raise it while in 1st gear.NOTICE
ECA22521
Even with the transmission in
1. Gear positions
2. Shift pedal
1 2 3 4
5 6
N
1
2
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Page 70 of 124
Operation and important riding points
6-4
1
2
3
4
56
7
8
9
10
11
12 r/min.
1600 km (1000 mi) and beyond
The vehicle can now be operated nor-
mally.
NOTICE
ECA10311
Keep the engine speed out of
the tachometer red zone.
If any engine trouble should oc-
cur during the engine break-in
period, immediately have a
Yamaha dealer check the vehi-cle.
TIPDuring and after the engine break-in
period, the exhaust heat may cause
discoloration of the exhaust pipe, butthis is normal.
EAU17214
ParkingWhen parking, stop the engine, and
then remove the key from the main
switch.
WARNING
EWA10312
Since the engine and exhaust
system can become very hot,
park in a place where pedestri-
ans or children are not likely to
touch them and be burned.
Do not park on a slope or on soft
ground, otherwise the vehicle
may overturn, increasing the
risk of a fuel leak and fire.
Do not park near grass or other
flammable materials whichmight catch fire.
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Page 73 of 124

Periodic maintenance and adjustment
7-3
1
2
3
4
5
678
9
10
11
12
EAU71033
Periodic maintenance chartsTIP
Items marked with an asteri sk should be performed by your Yamaha dealer because these items require special tools,
data, and technical skills.
From 50000 km (30000 mi), repeat the maintenance intervals starting from 10000 km (6000 mi).
The annual checks must be performed every year, except if a distance-based maintenance is performed in-stead.
EAU71051
Periodic maintenance chart fo r the emission control systemNO. 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 *Fuel line Check fuel hoses for cracks or
damage.
Replace if necessary.
2 *Spark plugs Check condition.
Adjust gap and clean.
Replace.
3 *Valve clearance Check and adjust. Every 40000 km (24000 mi)
4 *Fuel injection Check engine idle speed.
Check and adjust synchronization.
5 *Exhaust system Check for leakage.
Tighten if necessary.
Replace gaskets if necessary.
6 *Evaporative
emission control
system Check control system for damage.
Replace if necessary.
BX4-9-E2.book 3 ページ 2018年9月6日 木曜日 午後4時39分