Periodic maintenance and adjustment
6-9
1
2
3
4
567
8
9
10
11
12
EAU19653
Checking the spark plugsThe spark plugs are important engine
components, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
they should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plugs can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter 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 en-
gine should have the same color. If any
spark plug shows a distinctly different
color, the engine could be operating im-
properly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If a spark plug shows signs of electrode
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.
TIPIf a torque wrench is not available wheninstalling 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 speci-
fied torque as soon as possible.NOTICE
ECA10841
Do not use any tools to remove or in-
stall the spark plug cap, otherwise
the ignition coil coupler may get
damaged. The spark plug cap may
be difficult to remove because the
rubber seal on the end of the cap fits
tightly. To remove the spark plug
cap, simply twist it back and forth
while pulling it out; to install it, twistit back and forth while pushing it in.
Specified spark plug:
NGK/CPR9EA9
1. Spark plug gapSpark plug gap:0.8–0.9 mm (0.031–0.035 in)
Tightening torque: Spark plug:13 N·m (1.3 kgf·m, 9.4 lb·ft)
B90-9-E1.book 9 ページ 2017年2月15日 水曜日 午後1時59分
Periodic maintenance and adjustment
6-10
1
2
3
4
56
7
8
9
10
11
12
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 fol-
lowing:
Check each hose connection.
Check each hose and canister for
cracks or damage. Replace if dam-
aged.
Make sure that the canister breath-
er is not blocked, and if necessary,
clean it.
EAU1990C
Engine oil and oil filter
cartridgeThe 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 engine oil level 1. Place the vehicle on a level sur- face 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 check window located
at the bottom-right side of the
crankcase.TIPThe engine oil should be between theminimum and maximum level marks. 4. If the engine oil is below the mini-
mum level mark, add sufficient oil
of the recommended type to raise
it to the correct level.
TIPCheck the O-ring for damage, and re-place it if necessary.
1. Canister
2. Canister breather hose
1
2
1. Engine oil filler cap
2. Engine oil level check window
3. Maximum level mark
4. Minimum level mark
1
2
34
B90-9-E1.book 10 ページ 2017年2月15日 水曜日 午後1時59分
Periodic maintenance and adjustment6-13
1
2
3
4
567
8
9
10
11
12
11. Install and tighten the engine oil fill-
er cap.
12. Start the engine, and then let it idle for several minutes while checking
it for oil leakage. If oil is leaking, im-
mediately turn the engine off and
check for the cause.
TIPAfter the engine is started, the engine
oil level warning light should go off if theoil level is sufficient.NOTICE
ECA10402
If the oil level warning light flickers
or remains on even if the oil level is correct, immediately turn the engine
off and have a Yamaha dealer check
the vehicle.
13. Turn the engine off, wait a few min- utes until the oil settles, and then
check the oil level and correct it if
necessary.
EAU20071
CoolantThe 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.
EAU20096
Checking the coolant level1. Place the vehicle on a level sur- face 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 temperature.
Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to theside can result in a false reading.
2. Check the coolant level in the cool- ant reservoir.
TIPThe coolant should be between theminimum and maximum level marks.
1. Engine oil filler cap
2. O-ring
21
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10-1
1
2
3
4
5
6
7
8
91011
12
Index
AABS ...................................................... 3-17
ABS warning light ................................... 3-5
Air filter element.................................... 6-15
Auxiliary DC connector ......................... 3-30
Auxiliary light bulb, replacing ................ 6-34BBattery .................................................. 6-29
Brake and clutch levers, checking and lubricating .................................... 6-26
Brake and shift pedals, checking and lubricating .................................... 6-26
Brake fluid, changing ............................ 6-22
Brake fluid level, checking .................... 6-21
Brake lever ........................................... 3-16
Brake lever free play, checking ............ 6-19
Brake light switches .............................. 6-20
Brake pedal .......................................... 3-17
Brake/tail light ....................................... 6-35CCables, checking and lubricating .......... 6-25
Canister ................................................ 6-10
Care ........................................................ 7-1
Catalytic converter ................................ 3-22
Clutch lever........................................... 3-16
Clutch lever free play, adjusting ........... 6-19
Coolant ................................................. 6-13
Coolant temperature warning light.......... 3-4DData recording, vehicle ........................... 9-2
Diagnostic connecto r .............................. 9-2
Dimmer switch ...................................... 3-14
D-mode (drive mode)............................ 3-13
Drive chain, cleaning and lubricating .... 6-24Drive chain slack ................................... 6-23
EEngine break-in ....................................... 5-3
Engine idling speed,
checking............... 6-15
Engine oil and oil filter cartridge ............ 6-10
Engine serial number ..............................9-1
Engine trouble warning light .................... 3-5FFront and rear brake pads, checking .... 6-20
Front fork, adjusting .............................. 3-24
Front fork, checking............................... 6-28
Fuel ....................................................... 3-20
Fuel consumption, tips for reducing ........5-3
Fuel tank breather hose and
overflow hose ...................................... 3-22
Fuel tank cap......................................... 3-20
Fuses, replacing .................................... 6-30HHandlebar switches ............................... 3-14
Hazard switch........................................ 3-15
Headlight bulb, replacing....................... 6-33
High beam indicator light .........................3-4
Horn switch ........................................... 3-15IIdentification numbers .............................9-1
Ignition circuit cut-off system ................. 3-28
Immobilizer system ................................. 3-1
Immobilizer system indicator light ........... 3-5
Indicator lights and warning lights ........... 3-4LLicense plate light ................................. 6-36
Luggage strap holders .......................... 3-27MMain switch/steering lock ........................3-2 Maintenance and lubrication, periodic .... 6-5
Maintenance, emission control system ... 6-3
Matte color, caution ................................ 7-1
Model label ............................................. 9-2
Multi-function meter unit ......................... 3-6
NNeutral indicator light .............................. 3-4OOil level warning light .............................. 3-4PParking.................................................... 5-4
Part locations .......................................... 2-1
Pass switch ........................................... 3-14SSafety information ................................... 1-1
Seat ...................................................... 3-23
Shifting .................................................... 5-2
Shift pedal ............................................. 3-16
Shock absorber assembly, adjusting .... 3-26
Sidestand .............................................. 3-28
Sidestand, checking and lubricating ..... 6-27
Spark plugs, checking ............................. 6-9
Specifications.......................................... 8-1
Starting the engine.................................. 5-1
Steering, checking ................................ 6-28
Stop/Run/Start switch ........................... 3-15
Storage ................................................... 7-3
Storage compartment ........................... 3-24
Supporting the motorcycle .................... 6-36
Swingarm pivots, lubricating ................. 6-27TThrottle grip and cable, checking
and lubricating .................................... 6-25
Throttle grip free play, checking............ 6-15
B90-9-E1.book 1 ページ 2017年2月15日 水曜日 午後1時59分