engine YAMAHA YZF-R6 2018 Owner's Manual

Instrument and control functions
4-29
4
TIP
Although a damping force adjuster
may turn or click beyond the stated mi-
nimum settings, such adjustments are
ineffective and may damage the sus-
pension.
WARNING
EWA10222
This shock a bsor ber assem bly con-
tains hi ghly pressurize d nitro gen
g as. Rea d an d un derstan d the fol-
lowin g information before han dlin g
the shock a bsor ber assem bly.
 Do not tamper with or attempt
to open the cylind er assembly.
 Do not su bject the shock a b-
sor ber assem bly to an open
flame or other hi gh heat source.
This may cause the unit to ex-
plo de due to excessive g as
pressure.
 Do not deform or damag e the
cylin der in any way. Cylin der
d amag e will result in poor
d ampin g performance.
 Do not d ispose of a damag ed or
worn-out shock a bsor ber as-
sem bl

y yourself. Take the shock
a b sor ber assem bly to a Yamaha
d ealer for any service.
EAU15283
EXUP system
This model is equipped with Yamaha’s
EXUP (EXhaust Ultimate Power valve)
system. This system boosts engine
power by means of a valve that regu-
lates the inner diameter of the exhaust
pipe. The EXUP system valve is con-
stantly adjusted in accordance with the
engine speed by a computer-con-
trolled servomotor.
NOTICE
ECA10192
 The EXUP system has been set
an d extensively teste d at the
Yamaha factory. Chan gin g
these settin gs without sufficient
technical knowle dge may result
in poor performance of or dam-
a g e to the en gine.
 If the EXUP system cannot be
hear d when the main switch is
turne d on, have a Yamaha deal-
er check it.
Slow compression dampin g settin g
Minimum (soft): 18 click(s) in direction (b)*
Standard:
14 click(s) in direction (b)*
Maximum (hard): 1 click(s) in direction (b)*
* With the adjusting bolt fully turned in direction (a)
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Instrument and control functions
4-31
4
EAU64051
Ig nition circuit cut-off system
This 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
sidestand be lowered while the trans-
mission is in gear.
Periodically check the system via the
following procedure.
TIP
 This check is most reliable if per-
formed with a warmed-up engine.
 See pages 4-2 and 4-4 for switch
operation information.
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Instrument and control functions
4-32
4
With the engine turned off:
1. Move the sidestand down.
2. Set engine stop switch to run position.
3. Turn main switch to on position.
4. Shift transmission into neutral.
5. Push the start switch.
Does the engine start?
With the engine still running:
6. Move the sidestand up.
7. Pull the clutch lever.
8. Shift transmission into gear.
9. Move the sidestand down.
Does the engine 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.
The neutral switch may not be working.
The motorcycle should not be ridden
until checked by a Yamaha dealer.
The sidestand switch may not be
working.
The motorcycle should not be ridden
until checked by a Yamaha dealer.
The clutch switch may not be working.
The motorcycle should not be ridden
until checked by a Yamaha dealer.
WARNING
If a malfunction is found, have the
vehicle inspected before riding.
YES NO
YESNO
YESNO
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For your safety – pre-operation checks
5-1
5
EAU63440
Inspect your vehicle each time you use it to make sure the vehicle is in safe oper-
ating 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 acci dent or equipment d amage. Do not operate the vehicle if you fin d
any prob lem. If a pro blem cannot be corrected b y the proce dures provi ded
in this manual, have the vehicle inspecte d b y a Yamaha d ealer.
Before using this vehicle, check the following points:
ITEM CHECKSPAGE
Fuel • Check fuel level in fuel tank.
• Refuel if necessary.
• Check fuel line for leakage.
• Check fuel tank overflow hose for obstructions, cracks
or damage, and check hose connection. 4-20,
4-22
En gine oil • Check oil level in engine.
• If necessary, add recommended oil to specified level.
• Check vehicle for oil leakage. 7-13
Coolant • Check coolant level in reservoir.
• If necessary, add recommended coolant to specified
level.
• Check cooling system for leakage. 7-17
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. 7-25,
7-26
Rear 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. 7-25,
7-26
Clutch • Check operation.
• Lubricate cable if necessary.
• Check lever free play.
• Adjust if necessary. 7-23
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Operation and important ri din g points
6-1
6
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 coul d cause an acci dent
or injury.
EAU73451
TIP
This model is equipped with:  a lean angle sensor to stop the en-
gine in case of turnover. Turn the
main switch off once before at-
tempting to restart the engine.
Failing to do so will prevent the en-
gine 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.
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Operation and important rid ing points
6-2
6
EAU80211
Startin g the en gine
In order for the ignition circuit cut-off
system (page 4-31) 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
sidestand up.
To start the engine
1. Turn the key to “ON” and make sure that the engine stop switch is
set to “ ”.
2. Confirm that the following lights perform a circuit check (come on
for a few seconds and then go off). Engine trouble warning light
 ABS warning light*
 Oil level warning light
 Fuel level warning light*
 Coolant temperature warning
light
 Traction control system indi-
cator light
 Shift timing indicator light
 Immobilizer system indicator
light
TIP
 The ABS warning light should
come on and stay on until the ve-
hicle reaches a traveling speed of
10 km/h (6 mi/h).
 The fuel level warning light will
stay on if you are low on fuel.
NOTICE
ECA24110
If a warnin g or in dicator li ght does
not work as descri bed a bove, have a
Yamaha dealer check the vehicle.
3. Shift the transmission into the
neutral position (or hold the clutch
lever pulled with the sidestand up).
4. Push the start switch “ ” to crank the engine with the starter.
Release the start switch when the
engine starts, or after 5 seconds.
Wait 10 seconds before pressing
the switch again to allow battery
voltage to restore.
NOTICE
ECA11043
For maximum en gine life, never ac-
celerate har d when the en gine is
col d!
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Operation and important ri din g points
6-3
6
EAU77401
Shiftin g
Shifting gears lets you control the
amount of engine power available for
starting off, accelerating, climbing hills,
etc. The gear positions are shown in
the illustration.
TIP
To shift the transmission into the
neutral position ( ), press the
shift pedal down repeatedly until it
reaches the end of its travel, and
then slightly raise it.
 This model is equipped with a
quick shift system. (See page 3-4.)
NOTICE
ECA23990
Even with the transmission in
the neutral position, d o not
coast for lon g period s of time
with the en gine off, an d d o not
tow the motorcycle for lon g d is-
tances. The transmission is
properly lu bricated only when
the en gine is runnin g. Ina de-
quate lu brication may damag e
the transmission.
 Except when upshiftin g with the
quick shift system, always use
the clutch while chan gin g g ears to avoi
d d amag ing the en gine,
transmission, an d drive train,
which are not d esigne d to with-
stan d the shock of force d shift-
in g.
1. Gear positions
2. Shift pedal
2
1
1
N 2 3
4
5
6
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Operation and important rid ing points
6-4
6
EAU16811
Tips for re ducin g fuel con-
sumption
Fuel consumption depends largely on
your riding style. Consider the follow-
ing tips to reduce fuel consumption:
 Shift up swiftly, and avoid high en-
gine speeds during acceleration.
 Do not rev the engine while shift-
ing down, and avoid high engine
speeds with no load on the en-
gine.
 Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at traf-
fic lights or at railroad crossings).
EAU16842
Engine break-in
There 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 fol-
lowing 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.
EAU17085
0–1000 km (0–600 mi)
Avoid prolonged operation above 8300
r/min. NOTICE: After 1000 km (600
mi) of operation, the en gine oil must
b e chan ged an d the oil filter car-
tri dge or element replace d.
[ECA10303]
1000–1600 km (600–1000 mi)
Avoid prolonged operation above 9900
r/min.
1600 km (1000 mi) an d b eyon d
The vehicle can now be operated nor-
mally.
NOTICE
ECA10311
 Keep the en gine spee d out of
the tachometer red zone.
 If any en gine trou ble shoul d oc-
cur durin g the en gine break-in
perio d, imme diately have a
Yamaha dealer check the vehi-
cle.
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Operation and important ri din g points
6-5
6
TIP
During and after the engine break-in
period, the exhaust heat may cause
discoloration of the exhaust pipe, but
this is normal.
EAU17214
Parkin g
When parking, stop the engine, and
then remove the key from the main
switch.
WARNING
EWA10312
Since the en gine an d exhaust
system can become very hot,
park in a place where ped estri-
ans or chil dren are not likely to
touch them and b e burne d.
 Do not park on a slope or on soft
groun d, otherwise the vehicle
may overturn, increasin g the
risk of a fuel leak an d fire.
 Do not park near grass or other
flammab le materials which
mi ght catch fire.
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Periodic maintenance an d a djustment
7-2
7
EAU17303
Emission controls not only function to
ensure cleaner air, but are also vital to
proper engine operation and maximum
performance. In the following periodic
maintenance charts, the services relat-
ed to emissions control are grouped
separately. These services require
specialized data, knowledge, and
equipment. Maintenance, replace-
ment, or repair of the emission control
devices and systems may be per-
formed by any repair establishment or
individual that is certified (if applicable).
Yamaha dealers are trained and equipped to perform these particular
services.
EAU67090
Owner’s tool kit
The owner’s tool kit should be stored
separately from the vehicle. However,
there are two hexagon wrenches
stored under the passenger seat. (See
page 4-23.)
The service information included in this
manual and the tools provided are in-
tended to assist you in the perfor-
mance of preventive maintenance and
minor repairs. However, additional
tools, such as a torque wrench, are
necessary to perform certain mainte-
nance work correctly.
TIP
If you do not have the tools or experi-
ence required for a particular job, have
a Yamaha dealer perform it for you.
1. Hexagon wrench
1
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