check engine YAMAHA MT-03 2018 Owner's Manual

Periodic maintenance an d a djustment
6-38
6 En
gine overheatin g
WARNING
EWAT1041
zDo not remove the ra diator cap when the en gine an d ra diator are hot.
Scal din g hot flui d an d steam may b e blown out un der pressure, which
coul d cause serious injury. Be sure to wait until the eng ine has cooled.
z Place a thick ra g, like a towel, over the ra diator cap, an d then slowly ro-
tate the cap counterclockwise to the detent to allow any resi dual pres-
sure to escape. When the hissin g soun d has stopped , press down on the
cap while turnin g it counterclockwise, an d then remove the cap.
TIP
If coolant is not available, tap water can be temporarily used instead, provided
that it is changed to the recommended coolant as soon as possible.
Wait until the engine
has cooled.
Check the coolant
level in the reservoir
and radiator.Add coolant.
(See TIP.)
The coolant level is
OK.
There is no leakage.
There is leakage.
The coolant level is
low.
Check the cooling
system for leakage.
Have a Yamaha
dealer check and
repair the cooling
system.
Start the engine. If the engine overheats again,
have a Yamaha dealer check and repair the cooling
system.
UB9AE0E0.book Page 38 Thursday, March 23, 2017 2:48 PM

Motorcycle care and stora ge
7-5
7
cylinder head so that the elec-
trodes 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 dam-
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 charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-
cessively 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
6-29.
TIP
Make any necessary repairs before
storing the motorcycle.
UB9AE0E0.book Page 5 Thursday, March 23, 2017 2:48 PM

Consumer information
9-3
9
EAU74702
Vehicle data record ing
This model’s ECU stores certain vehi-
cle data to assist in the diagnosis of
malfunctions and for research and de-
velopment purposes. This data will be
uploaded only when a special Yamaha
diagnostic tool is attached to the vehi-
cle, such as when maintenance checks
or service procedures are performed.
Although the sensors and recorded
data will vary by model, the main data
points are:
z Vehicle status and engine perfor-
mance data
z Fuel-injection and emission-relat-
ed data
Yamaha will not disclose this data to a third party except: z With the consent of the vehicle
owner
z Where obligated by law
z For use by Yamaha in litigation
z For general Yamaha-conducted
research purposes when the data
is not related to an individual vehi-
cle nor owner
UB9AE0E0.book Page 3 Thursday, March 23, 2017 2:48 PM

10-1
10
Index
A
ABS ....................................................... 3-14
ABS warning light ................................... 3-3
Air filter element and check hose,
replacing and cleaning ....................... 6-13
Auxiliary light......................................... 6-33
B
Battery .................................................. 6-29
Brake and clutch levers, checking
and lubricating .................................... 6-26
Brake and shift pedals, checking and lubricating .................................... 6-25
Brake fluid, changing ............................ 6-22
Brake fluid level, checking .................... 6-21
Brake lever ............................................ 3-13
Brake lever free play, checking............. 6-19
Brake light switches.............................. 6-19
Brake pedal........................................... 3-14
C
Cables, checking and lubricating ......... 6-24
Canister................................................... 6-8
Care ........................................................ 7-1
Catalytic converter ................................ 3-18
Clutch lever ........................................... 3-12
Clutch lever free play, adjusting ........... 6-18
Coolant ................................................. 6-11
D
Data recording, vehicle ........................... 9-3
Diagnostic connector.............................. 9-2
Dimmer switch ...................................... 3-11
Drive chain, cleaning and lubricating .... 6-24
Drive chain slack................................... 6-22
E
Engine break-in....................................... 5-4
Engine oil and oil filter cartridge ............. 6-8
Engine serial number .............................. 9-1
Engine stop switch ............................... 3-12
Engine trouble warning light ................... 3-3
F
Front and rear brake pads, checking.... 6-20
Front fork, checking .............................. 6-27
Fuel ....................................................... 3-16
Fuel tank cap ........................................ 3-15
Fuel tank overflow hose ........................ 3-17
Fuses, replacing.................................... 6-30
H
Handlebar switches .............................. 3-11
Headlight bulb, replacing ...................... 6-32
Helmet holders...................................... 3-20
High beam indicator light........................ 3-2 Horn switch .......................................... 3-12
I
Identification numbers ............................ 9-1
Ignition circuit cut-off system............... 3-23
Indicator lights and warning lights ......... 3-2
L
License plate light bulb, replacing........ 6-34
Luggage strap holders ......................... 3-22
M
Main switch/steering lock....................... 3-1
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 ........................ 3-4
N
Neutral indicator light ............................. 3-2
O
Oil pressure warning light ....................... 3-2
P
Parking ................................................... 5-4
Part locations ......................................... 2-1
Pass switch .......................................... 3-11
S
Safety information .................................. 1-1
Seats .................................................... 3-18
Shifting ................................................... 5-3
Shift pedal ............................................ 3-13
Shift timing indicator light....................... 3-4
Shock absorber assembly, adjusting............................................. 3-21
Sidestand ............................................. 3-23
Sidestand, checking and lubricating .... 6-26
Spark plugs, checking ............................ 6-7
Specifications ......................................... 8-1
Starting the engine ................................. 5-2
Start switch .......................................... 3-12
Steering, checking................................ 6-28
Storage ................................................... 7-4
Storage compartment .......................... 3-21
Supporting the motorcycle................... 6-35
Swingarm pivots, lubricating ................ 6-27
T
Tail/brake light ...................................... 6-33
Throttle grip and cable, checking and lubricating .................... 6-25
Throttle grip free play, checking........... 6-14
Tires ...................................................... 6-15
Tool kit.................................................... 6-2
UB9AE0E0.book Page 1 Thursday, March 23, 2017 2:48 PM