lock YAMAHA YZF-R6 2020 User Guide

Instrument and control functions
4-21
4
NOTICE
ECA11401
Use only unlea ded g asoline. The use
of lead ed g asoline will cause severe
d amag e to internal en gine parts,
such as the valves an d piston rin gs,
as well as to the exhaust system.
EAU86160
Fuel tank overflow hoseThe overflow hose drains excess gaso-
line and directs it safely away from the
vehicle.
Before 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 fuel tank over-
flow hose is not blocked, and
clean it if necessary.
 Make sure that the fuel tank over-
flow hose is positioned as shown.
TIPSee page 7-14 for canister information.
1. Guide
2. Fuel tank overflow hose
1
2
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Instrument and control functions
4-22
4
EAU13435
Catalytic converterThe exhaust system contains catalytic
converter(s) to reduce harmful exhaust
emissions.
WARNING
EWA10863
The exhaust system is hot after op-
eration. To prevent a fire hazar d or
b urns:
 Do not park the vehicle near
possi ble fire hazar ds such as
g rass or other materials that
easily burn.
 Park the vehicle in a place
where pe destrians or chil dren
are not likely to touch the hot
exhaust system.
 Make sure that the exhaust sys-
tem has coole d down before
d oin g any maintenance work.
 Do not allow the en gine to i dle
more than a few minutes. Lon g
i d lin g can cause a buil d-up of
heat.
EAU79900
SeatsPassen ger seat
To remove the passenger seat1. Insert the key into the seat lock, and then turn it clockwise.
2. Lift the front of the passenger seat and pull it forward.
To install the passenger seat1. Insert the projection on the rear of the passenger seat into the seat
holder as shown, and then push
the front of the seat down to lock
it in place. 2. Remove the key.
Ri der seat
To remove the rider seat
1. Remove the passenger seat.
2. Pull up the corners on the rear of the rider seat as shown, remove
the bolts with the hexagon wrench
located under the passenger seat,
and then pull the seat off.
1. Seat lock
2. Unlock.
1
2
1. Projection
2. Seat holder
2
1
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Instrument and control functions
4-26
4
EAU79933
A djustin g the shock a bsor ber
assem blyThis model is equipped with adjustable
suspension. The spring preload, re-
bound damping force, fast compres-
sion damping force, and slow
compression damping force can be
adjusted.NOTICE
ECA10102
To avoi d d amag ing the mechanism,
d o not attempt to turn b eyond the
maximum or minimum settin gs.Sprin g preloa d
1. Loosen the locknut.
2. Turn the adjusting nut in direction (a) to increase the spring preload.
Turn the adjusting nut in direction
(b) to decrease the spring preload.
The spring preload setting is de-
termined by measuring distance
A. The longer distance A is, the
higher the spring preload; the
shorter distance A is, the lower the
spring preload. 
Use the special wrench and
the extension bar included in
the tool kit to make the ad-
justment.
3. Tighten the locknut to the speci-fied torque. NOTICE: Always
ti ghten the locknut ag ainst the
a d justin g nut, an d then ti ghten
the locknut to the specifie d
torque.
[ECA10122]
Re boun d d ampin g force
Turn the adjusting bolt in direction (a)
to increase the rebound damping
force.
Turn the adjusting bolt in direction (b)
to decrease the rebound damping
force.
To set the rebound damping force, turn
the adjuster in direction (a) until it
stops, and then count the clicks in di-
rection (b).
1. Locknut
2. Spring preload adjusting nut
3. Special wrench
4. Extension bar
1. Distance A
1
3
4
2
(a)
(b)
1
Sprin g preloa d:
Minimum (soft):
Distance A = 84.9 mm (3.34 in)
Standard:
Distance A = 89.9 mm (3.54 in)
Maximum (hard): Distance A = 92.9 mm (3.66 in)
Ti ghtenin g torque:
Locknut:
28 N·m (2.8 kgf·m, 21 lb·ft)
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Periodic maintenance an d a djustment
7-14
7
Before installing a spark plug, the
spark plug gap should be measured
with a wire thickness gauge and, if
necessary, adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the spark
plug threads.
TIPIf a torque wrench is not available
when installing a spark plug, a good
estimate of the correct torque is 1/4–
1/2 turn past finger tight. However, the
spark plug should be tightened to the
specified torque as soon as possible.NOTICE
ECA10841
Do not use any tools to remove or in-
stall the spark plu
g cap, otherwise
the i gnition coil coupler may get
d amag ed . The spark plu g cap may
b e difficult to remove because the
ru bber seal on the en d of the cap fits
ti g htly. To remove the spark plu g
cap, simply twist it back an d forth
while pullin g it out; to install it, twist
it back an d forth while pushin g it in.
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
following:
 Check each hose connection.
 Check each hose and canister for
cracks or damage. Replace if
damaged.
 Make sure that the canister
breather is not blocked, and if
necessary, clean it.
Specifie d spark plu g:
NGK/CR10EK1. Spark plug gapSpark plu g g ap:
0.6–0.7 mm (0.024–0.028 in)
Ti ghtenin g torque:
Spark plug: 13 N·m (1.3 kgf·m, 9.6 lb·ft)
1
1
1. Canister
2. Canister breather
2
1
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Periodic maintenance an d a djustment
7-25
7
TIPIf the specified clutch lever free play
cannot be obtained as described
above, proceed as follows.1. Fully turn the adjusting bolt at the
clutch lever in direction (a) to loos-
en the clutch cable.
2. Remove panel B and cowling C. (See page 7-9.)
3. Loosen the locknut at the crank- case.
4. To increase the clutch lever free play, turn the clutch lever free play
adjusting nut in direction (a). To decrease the clutch lever free
play, turn the adjusting nut in di-
rection (b).
5. Tighten the locknut.
6. Install the cowling and the panel.
EAU37914
Checkin g the brake lever free
playThere should be no free play at the
brake lever end. If there is free play,
have a Yamaha dealer inspect the
brake system.
WARNING
EWA14212
A soft or spon gy feelin g in the brake
lever can in dicate the presence of
air in the hy draulic system. If there is
air in the hy draulic system, have a
Yamaha dealer blee d the system b e-
fore operatin g the vehicle. Air in the
hy draulic system will d iminish the
1. Locknut
2. Clutch lever free play adjusting nut
1
2(a)(b)
1. No brake lever free play
1
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Periodic maintenance an d a djustment
7-26
7
b
rakin g performance, which may re-
sult in loss of control an d an acci-
d ent.
EAU36505
Brake li ght switchesThe brake light should come on just
before braking takes effect. The brake
light is activated by switches connect-
ed to the brake lever and brake pedal.
Since the brake light switches are
components of the anti-lock brake sys-
tem, they should only be serviced by a
Yamaha dealer.
EAU22393
Checkin g the front an d rear
b rake pa dsThe front and rear brake pads must be
checked for wear at the intervals spec-
ified in the periodic maintenance and
lubrication chart.
EAU36891
Front brake pad s
Each front brake pad is provided with
wear indicators, which allows you to
check the brake pad wear without hav-
ing to disassemble the brake. To check
the brake pad wear, check the position
of the wear indicators while applying
the brake. If a brake pad has worn to
the point that a wear indicator almost1. Brake pad wear indicator
1
1
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Periodic maintenance an d a djustment
7-28
7

Use only the specifie d b rake flu-
i d ; otherwise, the ru bber seals
may deteriorate, causin g leak-
a g e.
 Refill with the same type of
brake flui d. A ddin g a brake flui d
other than DOT 4 may result in a
harmful chemical reaction.
 Be careful that water or dust
d oes not enter the brake flui d
reservoir when refillin g. Water
will si gnificantly lower the boil-
in g point of the flui d an d may re-
sult in vapor lock, an d d irt may
clo g the ABS hy draulic unit
valves.
NOTICE
ECA17641
Brake flui d may d amage painte d
surfaces or plastic parts. Always
clean up spille d flui d imme diately.As the brake pads wear, it is normal for
the brake fluid level to gradually go
down. A low brake fluid level may indi-
cate worn brake pads and/or brake
system leakage; therefore, be sure to
check the brake pads for wear and the
brake system for leakage. If the brake fluid level goes down suddenly, have a
Yamaha dealer check the cause before
further riding.
EAU22734
Chan
gin g the brake flui dHave a Yamaha dealer change the
brake fluid every 2 years. In addition,
have the seals of the master cylinders
and brake calipers, as well as the brake
hoses replaced at the intervals listed
below or sooner if they are damaged or
leaking.
 Brake seals: every 2 years
 Brake hoses: every 4 years
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Periodic maintenance an d a djustment
7-29
7
EAU22762
Drive chain slackThe drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU74253
To check the drive chain slack
1. Place the motorcycle on the side- stand.TIPWhen checking and adjusting the drive
chain slack, there should be no weight
on the motorcycle.2. Shift the transmission into theneutral position.
3. Measure the drive chain slack as shown. 4. If the drive chain slack is incorrect,
adjust it as follows. NOTICE: Im-
proper drive chain slack will
overloa d the en gine as well as
other vital parts of the motorcy-
cle an d can lead to chain slip-
pa ge or breakag e. To prevent
this from occurrin g, keep the
d rive chain slack within the
specified limits.
[ECA10572]
EAU74260
To adjust the drive chain slack
Consult a Yamaha dealer before ad-
justing the drive chain slack. 1. Loosen the axle nut and the lock- nut on each side of the swingarm. 2. To tighten the drive chain, turn the
drive chain slack adjusting bolt on
each side of the swingarm in di-
rection (a). To loosen the drive
chain, turn the adjusting bolt on
each side of the swingarm in di-
rection (b), and then push the rear
wheel forward.
1. Drive chain slack
1
Drive chain slack:30.0–45.0 mm (1.18–1.77 in)
1. Drive chain puller
2. Axle nut
3. Drive chain slack adjusting bolt
4. Locknut
5. Alignment marks
4
2
3
1
5
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Periodic maintenance an d a djustment
7-30
7
TIPUsing the alignment marks on each
side of the swingarm, make sure that
both drive chain pullers are in the same
position for proper wheel alignment.3. Tighten the axle nut, then the lock-
nuts to their specified torques. 4. Make sure that the drive chain
pullers are in the same position,
the drive chain slack is correct,
and the drive chain moves
smoothly.
EAU23026
Cleanin g an d lu bricatin g the
d rive chainThe drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly wear
out, especially when riding in dusty or
wet areas. Service the drive chain as
follows.NOTICE
ECA10584
The drive chain must b e lubricate d
after washin g the motorcycle, ri din g
in the rain or ri din g in wet areas.1. Clean the drive chain with kero-
sene and a small soft brush.
NOTICE: To prevent d amaging
the O-rin gs, do not clean the
d rive chain with steam cleaners,
hi gh-pressure washers or inap-
propriate solvents.
[ECA11122]
2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive chain with a special O-ring chain
lubricant. NOTICE: Do not use
en gine oil or any other lu bri-
cants for the drive chain, as they
1. Drive chain slack adjusting bolt
2. LocknutTi ghtenin g torques:
Axle nut: 110 N·m (11 kgf·m, 81 lb·ft)
Locknut:
16 N·m (1.6 kgf·m, 12 lb·ft)
1
2
(a)
(b)
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Periodic maintenance an d a djustment
7-37
7
Fuse box 2 is located under panel A.
(See page 7-9.) If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off the electrical circuit in question.
2. Remove the blown fuse, and then install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a hi gher ampera ge
ratin g than recommen ded to
avoi d causin g extensive d am-
a g e to the electrical system an d
possi bly a fire.
[EWA15132]
3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
1. Fuse box 1
2. Fuel injection system fuse
3. ABS ECU fuse
4. Terminal fuse 1 (for optional equipment)
5. Electronic throttle valve fuse
6. Backup fuse (for clock and immobilizer sys-tem)
7. ABS solenoid fuse
8. Spare fuse
2
1
345
8
67
1. Fuse box 2
2. Hazard fuse
3. Headlight fuse
4. Ignition fuse
5. Signaling system fuse
6. Right radiator fan motor fuse
7. Left radiator fan motor fuse
8. Spare fuse
2
1
345
8
67
Specifie d fuses:
Main fuse:
50.0 A
Te r m i n a l f u s e 1 :
2.0 A
Fuel injection system fuse: 15.0 A
ABS motor fuse: 30.0 A
ABS ECU fuse:
7.5 A
ABS solenoid fuse: 10.0 A
Hazard fuse: 7.5 A
Electronic throttle valve fuse:
7.5 A
Backup fuse: 7.5 A
Radiator fan motor fuse: 15.0 A × 2
Ignition fuse:
15.0 A
Signaling system fuse: 10.0 A
Headlight fuse: 7.5 A
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