light YAMAHA YZF-R3 2018 Owner's Manual

Periodic maintenance an d a djustment
6-7
6
EAU19643
Checkin g the spark plu gs
The spark plugs are important engine
components, which should be
checked periodically, preferably by a
Yamaha dealer. Since heat and depos- its will cause any spark plug to slowly
erode, they should be removed and
checked in accordance with the peri-
odic maintenance and lubrication
chart. In addition, the condition of the
spark plugs can reveal the condition of
the engine.
The porcelain insulator around the
center electrode of each spark plug
should be a medium-to-light tan (the
ideal color when the vehicle is ridden
normally), and all spark plugs installed
in the engine should have the same
color. If any spark plug shows a dis-
tinctly different color, the engine could
be operating improperly. Do not at-
tempt to diagnose such problems
yourself. Instead, have a Yamaha deal-
er check the vehicle.
If a spark plug shows signs of elec-
trode erosion and excessive carbon or
other deposits, it should be replaced.
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.
TIP
If 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.
Specifie
d spark plu g:
NGK/LMAR8A-9
1. Spark plug gap
Spark plu g g ap:
0.8–0.9 mm (0.031–0.035 in)
Ti ghtening torque:
Spark plug: 13.0 N·m (1.3 kgf·m, 9.6 lb·ft)
UBR5E0E0.book Page 7 Wednesday, July 5, 2017 11:10 AM

Periodic maintenance an d a djustment
6-8
6
EAU36112
Canister
This 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.
EAU62632
Engine oil an d oil filter car-
tri dge
The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter car-
tridge replaced at the intervals speci-
fied in the periodic maintenance and
lubrication chart.
To check the en gine oil level
1. Place the vehicle on a level surfa- ce and hold it in an upright posi-
tion. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for several minutes, and then turn it
off.
3. Wait a few minutes until the oil set- tles, and then check the oil level
through the engine oil level check
window located at the bottom-
right side of the crankcase.
TIP
The engine oil should be between the
minimum and maximum level marks.
1. Engine oil filler cap
2. Engine oil level check window
3. Maximum level mark
4. Minimum level mark
4 21
3
UBR5E0E0.book Page 8 Wednesday, July 5, 2017 11:10 AM

Periodic maintenance an d a djustment
6-10
6
8. Install the engine oil drain bolt and
its new gasket, and then tighten
the bolt to the specified torque.TIP
Install the new gasket as shown.
9. Refill with the specified amount ofthe recommended engine oil, and
then install and tighten the oil filler
cap.
TIP
Be sure to wipe off spilled oil on any
parts after the engine and exhaust sys-
tem have cooled down.
NOTICE
ECA11621
In or der to prevent clutch slip-
pa ge (since the en gine oil also
lu bricates the clutch), do not
mix any chemical additives. Do
not use oils with a diesel speci-
fication of “CD” or oils of a hi gh-
er quality than specified . In
a dd ition, do not use oils la bele d
“ENERGY CONSERVING II” or
hi gher.
 Make sure that no forei gn mate-
rial enters the crankcase.
10. Start the engine, and then let it idle for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.
TIP
After the engine is started, the engine
oil pressure warning light should go off.
1. Torque wrench
Tightening torque:
Oil filter cartridge: 17 N·m (1.7 kgf·m, 13 lb·ft)
1. Engine oil drain bolt
2. Gasket
Tightening torque:
Engine oil drain bolt: 20 N·m (2.0 kgf·m, 15 lb·ft)
1
2
1
Recommen ded en gine oil:
See page 8-1.
Oil quantity: Oil change:
1.80 L (1.90 US qt, 1.58 Imp.qt)
With oil filter removal: 2.10 L (2.22 US qt, 1.85 Imp.qt)
UBR5E0E0.book Page 10 Wednesday, July 5, 2017 11:10 AM

Periodic maintenance an d a djustment
6-11
6
NOTICE
ECA20860
If the oil pressure warnin g li ght flick-
ers or remains on even if the oil level
is correct, imme diately turn the en-
g ine off an d have a Yamaha d ealer
check the vehicle.
11. Turn the engine off, wait a few mi- nutes until the oil settles, and then
check the oil level and correct it if
necessary.
EAU20071
Coolant
The coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAUN0690To check the coolant level1. Place the vehicle on a level surfa- ce and hold it in an upright posi-
tion.
TIP
The coolant level must be
checked on a cold engine since
the level varies with engine tem-
perature.
 Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to the
side can result in a false reading.
2. Check the coolant level in the
coolant reservoir.
TIP
The coolant should be between the mi-
nimum and maximum level marks.
1. Maximum level mark
2. Minimum level mark
3. Coolant reservoir
1
2
3
UBR5E0E0.book Page 11 Wednesday, July 5, 2017 11:10 AM

Periodic maintenance an d a djustment
6-20
6
EAU37914
Checkin g the brake lever free
play
There 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 be-
fore operatin g the vehicle. Air in the
hy draulic system will diminish the
b rakin g performance, which may re-
sult in loss of control an d an acci-
d ent.
EAU36505
Brake li ght switches
The 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.
1. No brake lever free play
1
UBR5E0E0.book Page 20 Wednesday, July 5, 2017 11:10 AM

Periodic maintenance an d a djustment
6-32
6
5. Place the tray in its original posi-
tion, and then install the quick fas-
teners.
6. Install the passenger seat.
Fuse box 1 is located behind the center
cover. (See page 3-18.)
Fuse box 1
Fuse box 2 is located under the rider
seat. (See page 3-18.) Fuse
box 2
If a fuse is blown, replace it as follows. 1. Turn the key to “ ” 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 dam-
a g e to the electrical system an d
possi bly a fire.
[EWA15132]
1. Fuse box 1
1. Ignition fuse
2. Signaling system fuse
3. ABS control unit fuse
4. Backup fuse (for clock)
5. Headlight fuse
6. Radiator fan motor fuse
7. Spare fuse
1
71
2
3
5
6
4
1. Fuse box 2
1. Spare fuse
2. ABS solenoid fuse
3. ABS motor fuse
1
123
UBR5E0E0.book Page 32 Wednesday, July 5, 2017 11:10 AM

Periodic maintenance an d a djustment
6-33
6 3. Turn the key to “ ” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows again, have a Yamaha dealer
check the electrical system.
EAU39014
Replacin g a hea dlig ht bul b
This model is equipped with halogen
bulb headlights. If a headlight bulb
burns out, replace it as follows.
NOTICE
ECA10651
Take care not to damag e the follow-
in g parts:
 Hea dlig ht bul b
Do not touch the glass part of
the hea dlig ht bul b to keep it free
from oil, otherwise the transpar-
ency of the glass, the luminosity
of the b ulb, an d the bul b life will
b e ad versely affected . Thor-
ou ghly clean off any d irt and fin-
g erprints on the hea dlig ht bul b
usin g a cloth moistene d with al-
cohol or thinner.
 Hea dlig ht lens
Do not affix any type of tinted
film or stickers to the head light
lens.
Do not use a hea dlig ht bul b of a
watta ge hi gher than specifie d.
1. Remove the headlight bulb cover
by turning it counterclockwise.
Specifie d fuses:
Main fuse: 30.0 A
Headlight fuse:
15.0 A
Signaling system fuse: 7.5 A
Ignition fuse: 15.0 A
Radiator fan motor fuse:
7.5 A
ABS motor fuse: 30.0 A
ABS solenoid fuse: 15.0 A
ABS control unit fuse:
7.5 A
Backup fuse: 7.5 A
1. Do not touch the glass part of the bulb.
UBR5E0E0.book Page 33 Wednesday, July 5, 2017 11:10 AM

Periodic maintenance an d a djustment
6-34
6
2. Disconnect the headlight coupler.
3. Unhook the headlight bulb holder,
and then remove the burnt-out
bulb.
4. Place a new headlight bulb into position, and then secure it with
the bulb holder.
5. Connect the headlight coupler.
6. Install the headlight bulb cover by turning it clockwise. 7. Have a Yamaha dealer adjust the
headlight beam if necessary.
1. Headlight bulb cover
1. Headlight coupler
1. Headlight bulb holder
1
1
1
UBR5E0E0.book Page 34 Wednesday, July 5, 2017 11:10 AM

Periodic maintenance an d a djustment
6-35
6
EAU39021
Auxiliary li ght bul b
If the auxiliary light does not come on,
have a Yamaha dealer check the elec-
trical circuit or replace the bulb.
EAU24182
Tail/ brake li ght
This model is equipped with an LED-
type tail/brake light.
If the tail/brake light does not come on,
have a Yamaha dealer check it.
1. Auxiliary light
1
UBR5E0E0.book Page 35 Wednesday, July 5, 2017 11:10 AM

Periodic maintenance an d a djustment
6-36
6
EAU62590
Replacin g a turn si gnal li ght
b ul b
1. Remove the turn signal light lens
by removing the screw.
2. Remove the turn signal light bulb socket (together with the bulb) by
turning it counterclockwise.
3. Remove the burnt-out bulb by pulling it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with the bulb) by turning it clockwise.
6. Install the turn signal light lens by installing the screw. NOTICE: Do
not overti ghten the screw, oth-
erwise the lens may break.
[ECA11192] EAU62670
Replacin
g the license plate
lig ht bul b
1. Remove the mudguard by remov-
ing the quick fasteners.
2. Remove the rear fender lower panel by removing the bolts and
screws.
3. Remove the license plate light bulb socket (together with the
bulb) by pulling it out.
4. Remove the burnt-out bulb by pulling it out.
1. Turn signal light lens
2. Screw
1. Turn signal light bulb socket
1
2
1
1. Mudguard
2. Quick fastener
1. Bolt
2. Screw
3. Rear fender lower panel
1
2
3
2
1
2
2
1
UBR5E0E0.book Page 36 Wednesday, July 5, 2017 11:10 AM