2018 YAMAHA YZF-R6 check engine light

Periodic maintenance an d a djustment
7-11
7 2. Install cowling C and panel B.
EAU79970Panels A an
d B
To remove a panel
Remove the quick fasteners, and then
pull the panel off as shown.
To install a panel
Place the panel in the original position,
and then install the quick fasteners.
EAU19653
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.
1. Panel A
2. Quick fastener
2
1
Specified spark plu g:
NGK/CR10EK
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Periodic maintenance an d a djustment
7-13
7
EAU80312
En gine oil an d oil filter car-
tri dg e
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.
4. Remove the engine oil dipstick and wipe it clean, insert it back
into the hole (without screwing it
in), and then remove it again to
check the oil level.
TIP
The engine oil should be between the
minimum and maximum level marks.
5. Check the dipstick O-ring fordamage, and replace it if neces-
sary.
6. If the engine oil is at or below the minimum level mark, remove the
engine oil filler cap, and then add
sufficient oil of the recommended
type to raise it to the correct level.
7. Check the filler cap O-ring for damage, and replace it if neces-
sary.
8. Insert and tighten the engine oil dipstick, and then install and tight-
en the oil filler cap.
To chan ge the en gine oil (with or
without oil filter cartri dge replace-
ment) 1. Place the vehicle on a level surfa- ce.
2. Remove cowlings A and B. (See page 7-7.)
3. Start the engine, warm it up for several minutes, and then turn it
off.
4. Place an oil pan under the engine to collect the used oil.
1. Engine oil dipstick
2. O-ring
3. Maximum level mark
4. Minimum level mark
1
2
3
4
1. Engine oil filler cap
2. O-ring
1
2
1
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Periodic maintenance an d a djustment
7-16
7
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 add itives. Do
not use oils with a d iesel speci-
fication of “CD” or oils of a hi gh-
er quality than specified . In
a ddition, do not use oils la bele d
“ENERGY CONSERVING II” or
hi gher.
 Make sure that no forei gn mate-
rial enters the crankcase.
15. Check the filler cap O-ring for damage, and replace it if neces-
sary.
16. Install and tighten the oil filler cap.
17. 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 level warning light should go off if
the oil level is sufficient.
NOTICE
ECA10402
If the oil level warnin g li ght flickers
or remains on even if the oil level is
correct, imme diately turn the en gine
off an d have a Yamaha dealer check
the vehicle.
18. Turn the engine off, and then check the oil level and correct it if
necessary.
19. Check the dipstick O-ring for damage, and replace it if neces-
sary.
20. Install the cowlings.
UBN6E1E0.book Page 16 Thursday, October 5, 2017 2:48 PM

11-1
11
Index
A
ABS ....................................................... 4-19
ABS warning light ................................... 4-7
Air filter element .................................... 7-18
Auxiliary DC connector ......................... 4-30
B
Battery .................................................. 7-34
Brake and clutch levers, checking
and lubricating .................................... 7-31
Brake and shift pedals, checking and lubricating .................................... 7-31
Brake fluid, changing ............................ 7-27
Brake fluid level, checking .................... 7-26
Brake lever ............................................ 4-18
Brake lever free play, checking............. 7-24
Brake light switches.............................. 7-25
Brake pedal........................................... 4-18
C
Cables, checking and lubricating ......... 7-30
Canister................................................. 7-12
Care ........................................................ 8-1
Catalytic converters .............................. 4-22
Clutch lever ........................................... 4-17
Clutch lever free play, adjusting ........... 7-23
Coolant ................................................. 7-17
Coolant temperature warning light ......... 4-6
Cowlings and panels, removing and installing................................................ 7-7
D
Data recording, vehicle ......................... 10-3
Diagnostic connector............................ 10-2
Dimmer switch ........................................ 4-4
D-mode (drive mode) .............................. 3-1
Drive chain, cleaning and lubricating .... 7-29
Drive chain slack................................... 7-28
Drive mode switch .................................. 4-5
E
Engine break-in....................................... 6-4
Engine idling speed, checking .............. 7-19
Engine oil and oil filter cartridge ........... 7-13
Engine serial number ............................ 10-1
Engine trouble warning light ................... 4-6
EXUP system ........................................ 4-29
F
Front and rear brake pads, checking.... 7-25
Front fork, adjusting.............................. 4-25
Front fork, checking .............................. 7-33
Fuel ....................................................... 4-20
Fuel consumption, tips for reducing ....... 6-4
Fuel level warning light ........................... 4-6 Fuel tank cap ........................................ 4-20
Fuel tank overflow hose ....................... 4-22
Fuses, replacing ................................... 7-36
H
Handlebar switches ................................ 4-4
Hazard switch......................................... 4-5
High beam indicator light ....................... 4-5
Horn switch ............................................ 4-4
I
Identification numbers .......................... 10-1
Ignition circuit cut-off system............... 4-31
Immobilizer system ................................ 4-1
Immobilizer system indicator light.......... 4-7
Indicator lights and warning lights ......... 4-5
L
License plate light bulb, replacing........ 7-38
M
Main switch/steering lock....................... 4-2
Maintenance and lubrication, periodic ... 7-4
Maintenance, emission control
system.................................................. 7-3
Matte color, caution ............................... 8-1
Model label ........................................... 10-1
Multi-function meter unit ........................ 4-8
N
Neutral indicator light ............................. 4-5
O
Oil level warning light ............................. 4-5
P
Parking ................................................... 6-5
Part locations ......................................... 2-1
Pass switch ............................................ 4-4
Q
Quick shift system .................................. 3-4
R
Rear view mirrors ................................. 4-24
S
Safety information .................................. 1-1
Seats .................................................... 4-23
Shifting ................................................... 6-3
Shift light ................................................ 4-7
Shift pedal ............................................ 4-17
Shock absorber assembly, adjusting ... 4-27
Sidestand ............................................. 4-30
Sidestand, checking and lubricating .... 7-32
Spark plugs, checking .......................... 7-11
Special features...................................... 3-1
Specifications ......................................... 9-1
Starting the engine ................................. 6-2
Steering, checking................................ 7-33
UBN6E1E0.book Page 1 Thursday, October 5, 2017 2:48 PM