2018 YAMAHA MT-10 check engine light

Periodic maintenance and adjustment
7-9
1
2
3
4
5
678
9
10
11
12
EAU67110
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.
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/LMAR9E-J
1. Spark plug gapSpark plug gap:0.6–0.7 mm (0.024–0.028 in)
Tightening torque: Spark plug (new):18 N·m (1.8 kgf·m, 13 lb·ft)
Spark plug (after checking):
13 N·m (1.3 kgf·m, 9.6 lb·ft)
1
1
B67-9-E2.book 9 ページ ２０１８年６月５日　火曜日　午前９時７分

Periodic maintenance and adjustment7-13
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678
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7. Install the engine oil drain bolt and
its new gasket, and then tighten
the bolt to the specified torque.
8. Refill with the specified amount of the recommended engine oil.
TIPWipe off any spilled oil before startingthe engine.
9. Check the O-ring for damage, and then install the oil filler cap. 10. Start the engine and let it idle for
several minutes while checking for
oil leakage. If any leakage is
found, immediately stop the en-
gine and check for the cause.
TIPAfter the engine is started, the oil pres-
sure warning light should go off if the oillevel is sufficient.NOTICE
ECA20860
If the oil pressure warning light flick-
ers or remains on even if the oil level
is correct, immediately turn the en-
gine off and have a Yamaha dealer
check the vehicle.
11. Turn the engine off, wait a few min- utes until the oil settles, and then
check the oil level one last time.
Tightening torque:Oil filter cartridge: 17 N·m (1.7 kgf·m, 13 lb·ft)
Tightening torque: Engine oil drain bolt: 23 N·m (2.3 kgf·m, 17 lb·ft)
1. Engine oil filler cap
2. O-ring
12
B67-9-E2.book 13 ページ ２０１８年６月５日　火曜日　午前９時７分

Periodic maintenance and adjustment
7-14
1
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3
4
5
67
8
9
10
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12
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 level 1. 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. 3. If the coolant is at or below the
minimum level mark, remove the
reservoir cap. WARNING! Re-
move only the coolant reservoir
cap. Never attempt to remove
the radiator cap when the en-
gine is hot.
[EWA15162]
4. Add coolant to the maximum level mark, and then install the reservoir
cap. NOTICE: If coolant is not
available, use distilled water or
soft tap water instead. Do not
use hard water or salt water
since it is harmful to the engine.
If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-
wise the cooling system will not
be protected against frost and
corrosion. If water has been
added to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as
soon as possible, otherwise the
1. Maximum level mark
2. Minimum level mark
21
1. Coolant reservoir cap
1
B67-9-E2.book 14 ページ ２０１８年６月５日　火曜日　午前９時７分

11-1
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3
4
5
6
7
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9
1011
12
IndexAABS ....................................................... 4-18
ABS warning light.................................... 4-6
Air filter element .................................... 7-15
Auxiliary DC jack ................................... 4-28BBattery................................................... 7-29
Brake and clutch levers, checking and lubricating .................................... 7-26
Brake and shift pedals, checking
and lubricating .................................... 7-25
Brake fluid, changing ............................ 7-22
Brake fluid level, checking .................... 7-21
Brake lever ............................................ 4-17
Brake lever free play, checking ............. 7-20
Brake light switches .............................. 7-20
Brake pedal ........................................... 4-17CCables, checking and lubricating .......... 7-25
Canister................................................. 7-10
Care ........................................................ 8-1
Catalytic converter ................................ 4-21
Clutch lever ........................................... 4-16
Clutch lever free play, adjusting ............ 7-19
Coolant.................................................. 7-14
Coolant temperature warning light .......... 4-6
Cruise control indicator lights .................. 4-5
Cruise control switches ........................... 4-4
Cruise control system ............................. 3-1DData recording, vehicle ......................... 10-2
Diagnostic connector ............................ 10-2
Dimmer/Pass switch ............................... 4-4
D-mode (drive mode) .............................. 3-3 Drive chain, cleaning and lubricating .... 7-24
Drive chain slack .................................. 7-23
Drive mode switch .................................. 4-4
EEngine break-in ...................................... 6-3
Engine idling speed, checking .............. 7-15
Engine oil .............................................. 7-10
Engine serial number............................ 10-1
Engine trouble warning light ................... 4-6
EXUP system ....................................... 4-27FFront and rear brake
pads, checking .... 7-21
Front fork, adjusting .............................. 4-23
Front fork, checking .............................. 7-27
Fuel....................................................... 4-19
Fuel consumption, tips for reducing........ 6-3
Fuel tank cap ........................................ 4-19
Fuel tank overflow hose........................ 4-21
Fuses, replacing ................................... 7-30HHandlebar switches ................................ 4-3
Hazard switch ......................................... 4-4
High beam indicator light ........................ 4-5
Horn switch ............................................. 4-4IIdentification numbers .......................... 10-1
Ignition circuit cut-off system ................ 4-29
Immobilizer system ................................. 4-1
Immobilizer system indicator light........... 4-7
Indicator lights and warning lights .......... 4-5LLuggage strap holders .......................... 4-27MMain switch/steering lock........................ 4-2 Maintenance and lubrication, periodic..... 7-5
Maintenance, emission control
system .................................................. 7-3
Matte color, caution ................................. 8-1
Model label ............................................ 10-2
Multi-function meter unit .......................... 4-8
NNeutral indicator light .............................. 4-5OOil pressure warning light........................ 4-5PParking .................................................... 6-4
Part locations .......................................... 2-1QQuick shift system ................................... 3-6SSafety information ................................... 1-1
Seat ....................................................... 4-22
SELECT switch ....................................... 4-4
Shift indicator light ................................... 4-7
Shifting .................................................... 6-2
Shift pedal ............................................. 4-16
Shock absorber assembly, adjusting .... 4-24
Sidestand .............................................. 4-28
Sidestand, checking an d lubricating...... 7-27
Spark plugs, checking ............................. 7-9
Special features ...................................... 3-1
Specifications .......................................... 9-1
Starting the engine .................................. 6-1
Steering, checking................................. 7-28
Steering damper warning light ................ 4-7
Stop/Run/Start switch.............................. 4-4
Storage.................................................... 8-4
Supporting the motorcycle .................... 7-33
B67-9-E2.book 1 ページ ２０１８年６月５日　火曜日　午前９時７分