2016 YAMAHA XJ6-N spark plugs

Table of contents
Safety information ............................1-1
Description ........................................2-1
Left view ..........................................2-1
Right view........................................2-2
Controls and instruments ................2-3
Instrument an d control functions ....3-1
Immobilizer system .........................3-1
Main switch/steering lock ...............3-2
Indicator lights and warning lights ............................................3-4
Multi-function meter unit .................3-6
Handlebar switches.......................3-10
Clutch lever ...................................3-12
Shift pedal .....................................3-12
Brake lever ....................................3-13
Brake pedal ...................................3-13
ABS (for ABS models) ...................3-14
Fuel tank cap.................................3-15
Fuel................................................3-15
Fuel tank breather hose and overflow hose.............................3-17
Catalytic converter ........................3-17
Seat ...............................................3-18
Helmet holder ................................3-19
Storage compartment ...................3-20
Handlebar position .......................3-20
Adjusting the shock absorber assembly....................................3-21
Sidestand ......................................3-22
Ignition circuit cut-off system........3-22
For your safety – pre-operation
checks ...............................................4-1
Operation an d important ri din g
points .................................................5-1
Starting the engine ..........................5-2
Shifting ............................................5-3
Tips for reducing fuel consumption ................................5-4
Engine break-in ...............................5-4
Parking ............................................5-5 Perio
dic maintenance an d
a d justment ........................................ 6-1
Owner’s tool kit ............................... 6-2
Periodic maintenance chart for the emission control system.............. 6-3
General maintenance and lubrication chart........................... 6-4
Removing and installing the
cowling and panels...................... 6-7
Checking the spark plugs ............... 6-8
Engine oil and oil filter cartridge ..... 6-9
Coolant ......................................... 6-12
Replacing the air filter element ..... 6-16
Adjusting the engine idling speed......................................... 6-17
Checking the throttle grip free play ............................................ 6-18
Valve clearance ............................. 6-18
Tires .............................................. 6-19
Cast wheels .................................. 6-21
Adjusting the clutch lever free play ............................................ 6-22
Checking the brake lever free
play ............................................ 6-23
Brake light switches ...................... 6-23
Checking the front and rear brake pads................................. 6-24
Checking the brake fluid level....... 6-25
Changing the brake fluid............... 6-26
Drive chain slack ........................... 6-26
Cleaning and lubricating the drive chain ................................. 6-28
Checking and lubricating the cables ........................................ 6-28
Checking and lubricating the
throttle grip and cable ............... 6-29
Checking and lubricating the brake and shift pedals ............... 6-29
Checking and lubricating the brake and clutch levers ............. 6-30
Checking and lubricating the
sidestand ................................... 6-30
Lubricating the swingarm pivots... 6-31
Checking the front fork ................. 6-31
Checking the steering ................... 6-32
Checking the wheel bearings ....... 6-32
UB61E1E0.book Page 1 Wednesday, October 21, 2015 11:19 AM

Periodic maintenance an d a djustment
6-8
6
To install the panel
Place the panel in the original position,
and then install the bolts.
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.
1. Panel B
2. Bolt
1
2
2
Specified spark plu g:
NGK/CR9E
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Periodic maintenance an d a djustment
6-45
6
EAU67970
Trou bleshootin g charts
Startin g pro blems or poor en gine performance
1. FuelThere is enough fuel.
There is no fuel.
Check the battery.
Supply fuel.
The engine turns over
quickly.
The engine turns over
slowly.
The engine does not
start.
Check the battery.
Wipe off with a dry
cloth and correct the
spark plug gaps, or
replace the spark
plugs.
Check the battery
lead connections, and
have a Yamaha dealer
charge the battery if
necessary.
2. BatteryThe battery is good.
The engine does not
start.
Check the ignition.
3. IgnitionWetOperate the electric
starter.
Dry
There is compression.
There is no
compression.
The engine does not start.
Have a Yamaha dealer check the vehicle.
Have a Yamaha dealer check the vehicle.
The engine does not
start.
Check the
compression.Have a Yamaha
dealer check the
vehicle.
Remove the spark
plugs and check
the electrodes.
Operate the electric
starter.
Operate the electric
starter.
Check the fuel level
in the fuel tank.
4. Compression
UB61E1E0.book Page 45 Wednesday, October 21, 2015 11:19 AM

Motorcycle care and stora ge
7-4
7
EAU26183
Stora ge
Short-term
Always store your motorcycle in a cool,
dry place and, if necessary, protect it
against dust with a porous cover. Be
sure the engine and the exhaust sys-
tem are cool before covering the mo-
torcycle.
NOTICE
ECA10811
 Storin g the motorcycle in a
poorly ventilated room or cover-
in g it with a tarp, while it is still
wet, will allow water an d humi d-
ity to seep in and cause rust.
 To prevent corrosion, avoi d
d amp cellars, sta bles ( because
of the presence of ammonia)
an d areas where stron g chemi-
cals are stored .
Long-term
Before storing your motorcycle for sev-
eral months: 1. Follow all the instructions in the “Care” section of this chapter.
2. Fill up the fuel tank and add fuel stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
3. Perform the following steps to protect the cylinders, piston rings,
etc. from corrosion.a. Remove the spark plug caps and spark plugs.
b. Pour a teaspoonful of engine oil into each spark plug bore.
c. Install the spark plug caps onto the spark plugs, and then pla-
ce the spark plugs on the cylin- der head so that the electrodes
are grounded. (This will limit
sparking during the next step.)
d. Turn the engine over several times with the starter. (This will
coat the cylinder walls with oil.)
WARNING! To prevent d am-
a g e or injury from sparkin g,
make sure to groun d the
spark plu g electro des while
turnin g the en gine over.
[EWA10952]
e. Remove the spark plug caps
from the spark plugs, and then
install the spark plugs and the
spark plug caps.
4. Lubricate all control cables and the pivoting points of all levers and
pedals as well as of the side-
stand/centerstand.
5. Check and, if necessary, correct the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
6. Cover the muffler outlet with a plastic bag to prevent moisture
from entering it.
7. Remove the battery and fully char- ge it. Store it in a cool, dry place
and charge it once a month. Do
not store the battery in an exces-
sively cold or warm place [less
than 0 °C (30 °F) or more than 30
°C (90 °F)]. For more information
on storing the battery, see page
6-33.
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10-1
10
Index
A
ABS (for ABS models) .......................... 3-14
ABS warning light (for ABS models)....... 3-5
Air filter element, replacing................... 6-16
Auxiliary light bulb, replacing ............... 6-38
B
Battery .................................................. 6-33
Brake and clutch levers, checking and
lubricating .......................................... 6-30
Brake and shift pedals, checking and lubricating .......................................... 6-29
Brake fluid, changing ........................... 6-26
Brake fluid level, checking ................... 6-25
Brake lever ........................................... 3-13
Brake lever free play, checking ............ 6-23
Brake light switches ............................. 6-23
Brake pedal .......................................... 3-13
Brake/tail light bulb, replacing ............. 6-39
C
Cables, checking and lubricating ......... 6-28
Care ........................................................ 7-1
Catalytic converter ............................... 3-17
Clutch lever .......................................... 3-12
Clutch lever free play, adjusting ........... 6-22
Coolant ................................................. 6-12
Coolant temperature warning light ......... 3-4
Cowling and panels, removing and installing ............................................... 6-7
D
Dimmer switch ..................................... 3-10
Drive chain, cleaning and lubricating ... 6-28
Drive chain slack .................................. 6-26
E
Engine break-in ...................................... 5-4
Engine idling speed .............................. 6-17
Engine oil and oil filter cartridge ............. 6-9
Engine serial number.............................. 9-1
Engine stop switch ............................... 3-11
Engine trouble warning light................... 3-5
F
Front and rear brake pads, checking ... 6-24
Front fork, checking ............................. 6-31
Fuel....................................................... 3-15
Fuel consumption, tips for reducing ...... 5-4
Fuel tank breather hose and overflow hose ................................................... 3-17
Fuel tank cap........................................ 3-15
Fuses, replacing ................................... 6-34
H
Handlebar position, adjusting .............. 3-20 Handlebar switches .............................. 3-10
Hazard switch ....................................... 3-11
Headlight bulb, replacing ...................... 6-36
Helmet holder ....................................... 3-19
High beam indicator light........................ 3-4
Horn switch........................................... 3-11
I
Identification numbers ............................ 9-1
Ignition circuit cut-off system ............... 3-22
Immobilizer system ................................. 3-1
Immobilizer system indicator light .......... 3-6
Indicator lights and warning lights .......... 3-4
L
License plate light bulb, replacing ........ 6-40
M
Main switch/steering lock ....................... 3-2
Maintenance and lubrication, periodic ... 6-4
Maintenance, emission control
system .................................................. 6-3
Matte color, caution ................................ 7-1
Model label ............................................. 9-1
Multi-function meter unit ........................ 3-6
N
Neutral indicator light.............................. 3-4
O
Oil level warning light .............................. 3-4
P
Parking .................................................... 5-5
Part locations .......................................... 2-1
Pass switch........................................... 3-10
S
Safety information................................... 1-1
Seat....................................................... 3-18
Shifting .................................................... 5-3
Shift pedal............................................. 3-12
Shock absorber assembly, adjusting ... 3-21
Sidestand .............................................. 3-22
Sidestand, checking and lubricating .... 6-30
Spark plugs, checking ............................ 6-8
Specifications ......................................... 8-1
Starting the engine.................................. 5-2
Start switch ........................................... 3-11
Steering, checking ................................ 6-32
Storage ................................................... 7-4
Storage compartment ........................... 3-20
Supporting the motorcycle ................... 6-40
Swingarm pivots, lubricating ................ 6-31
T
Throttle grip and cable, checking and lubricating ........................................... 6-29
UB61E1E0.book Page 1 Wednesday, October 21, 2015 11:19 AM