2018 YAMAHA TMAX check engine

Periodic maintenance and adjustment
8-16
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13
14
EAU21386
Checking the throttle grip free
play
Measure the throttle grip free play as
shown.
Periodically check the throttle grip free
play and, if necessary, have a Yamaha
dealer adjust it.
EAU21403
Valve clearance
The valves are an important engine
component, and since valve clearance
changes with use, they must be
checked and adjusted at the intervals
specified in the periodic maintenance
chart. Unadjusted valves can result in
improper air-fuel mixture, engine noise,
and eventually engine damage. To pre-
vent this from occurring, have your
Yamaha dealer check and adjust the
valve clearance at regular intervals.
TIP
This service must be performed when
the engine is cold.
1. Throttle grip free play
Throttle grip free play: 1.0–3.0 mm (0.04–0.12 in)
1
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Periodic maintenance and adjustment
8-33
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EAU25864
Troubleshooting
Although Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems your-
self. However, should your scooter re-
quire any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the scooter prop-
erly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
WARNING
EWA15142
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from water
heaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or
property damage.
EAU77992Smart key system troubleshooting
Please check the following items when
the smart key system does not work.
Is the smart key turned on? (See
page 3-5.)
Is the smart key battery dis-
charged? (See page 3-6.)
Is the smart key battery installed correctly? (See page 3-6.)
Is the smart key being used in a lo-
cation with strong radio waves or
other electromagnetic noise? (See
page 3-1.)
Are you using the smart key that is
registered to the vehicle?
Is the vehicle battery discharged?
When the vehicle battery is dis-
charged, the smart key system will
not operate. Please have the vehi-
cle battery charged or replaced.
(See page 8-27.)
If the smart key system does not work
after checking the above items, have a
Yamaha dealer check the smart key
system.
TIP
See Emergency mode on page 8-36 for
information on starting the engine with-
out the smart key.
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Periodic maintenance and adjustment
8-34
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EAU63470
Troubleshooting charts
Starting problems or poor engine 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
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Periodic maintenance and adjustment
8-35
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14
Engine overheating
WARNING
EWAT1041
Do not remove the radiator cap when the engine and radiator are hot.
Scalding hot fluid and steam may be blown out under pressure, which
could cause serious injury. Be sure to wait until the engine has cooled.
Place a thick rag, like a towel, over the radiator cap, and then slowly ro-
tate the cap counterclockwise to the detent to allow any residual pres-
sure to escape. When the hissing sound has stopped, press down on the
cap while turning it counterclockwise, and 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.
UBV1E1_1.book 35 ページ ２０１８年４月２７日　金曜日　午後４時４１分

Periodic maintenance and adjustment
8-36
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EAU77372
Emergency mode
When the smart key is lost, damaged,
or its battery has discharged, the vehi-
cle can still be turned on and the engine
started. You will need a mechanical key
and the smart key system identification
number. To operate the vehicle in
emergency mode, carry out the follow-
ing steps.
TIP
Emergency mode operation will be
cancelled if the respective steps are not
carried out within the time set for each
operation or if the “OFF/LOCK” switch
is pushed. 1. Stop the vehicle in a safe place.
2. Unlock the seat by inserting the mechanical key into the lock locat-
ed right side of body and turn it
counter clockwise.
3. Open the seat and check that the trunk light comes on.
4. Push the “ON/ ” switch once.
5. Without completely shutting the seat, raise and lower it three times
within 10 seconds.
TIP
Use the rear storage compartment light
as a guide when raising and lowering
the seat. The smart key system indicator
light on the speedometer will come
on for three seconds to indicate
the transition to emergency mode.
6. After the smart key system indica- tor light goes off, use the “ / ”
switch to enter the identification
number.
7. Inputting the identification number is done by counting the number of
flashes of the smart key system in-
dicator light.
For example, if the identification
number is 123456:
Push and hold the “ / ” switch.

The smart key system indicator
light will start to flash.

1. Smart key system indicator light “ ”
1. Identification number
1
12345 6
1
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Scooter care and storage
9-4
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EAU36554
Storage
Short-term
Always store your scooter 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 scoot-
er.
NOTICE
ECA10821
Storing the scooter in a poorly
ventilated room or covering it
with a tarp, while it is still wet,
will allow water and humidity to
seep in and cause rust.
To prevent corrosion, avoid
damp cellars, stables (because
of the presence of ammonia)
and areas where strong chemi-
cals are stored.
Long-term
Before storing your scooter for several
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 pro- tect the cylinders, piston rings, etc.
from corrosion.
a. Remove the spark plug caps and the spark plugs.
b. Pour a teaspoonful of engine oil into the spark plug bores.
c. Install the spark plug caps onto the spark plugs, and then place
the spark plugs on the cylinder head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several
times with the starter. (This will
coat the cylinder walls with oil.)
e. Remove the spark plug caps from the spark plugs, and then
install the spark plugs and the
spark plug caps. WARNING!
To prevent damage or injury
from sparking, make sure to
ground the spark plug elec-
trodes while turning the en-
gine over.
[EWA10952]
4. Lubricate all control cables and the pivoting points of all levers and
pedals as well as of the sides-
tand/centerstand.
5. Check and, if necessary, correct the tire air pressure, and then lift
the scooter 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
8-27.
TIP
Make any necessary repairs before
storing the scooter.
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Consumer information
11-2
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8
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EAU69910
Diagnostic connector
The diagnostic connector is located as
shown.
EAU74702
Vehicle data recording
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:
Vehicle status and engine perfor-
mance data
Fuel-injection and emission-relat-
ed data
Yamaha will not disclose this data to a
third party except:
With the consent of the vehicle
owner
Where obligated by law
For use by Yamaha in litigation
For general Yamaha-conducted
research purposes when the data
is not related to an individual vehi-
cle nor owner
1. Diagnostic connector
1
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12-1
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8
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14
Index
A
Acceleration and deceleration .................7-3
Air filter element, engine........................8-14
Anti-lock brake system (ABS)................5-19
Anti-lock brake system warning light .......5-3
Auxiliary DC jack ...................................5-28
B
Battery ...................................................8-27
Brake fluid, changing .............................8-22
Brake fluid level, checking .....................8-21
Brake lever, front ...................................5-17
Brake lever, rear ....................................5-18
Brake levers, lubricating ........................8-24
Braking ....................................................7-4
C
Cables, checking and lubricating...........8-23
Canister .................................................8-10
Care.........................................................9-1
Catalytic converter.................................5-23
Centerstand and sidestand, checking and lubricating.....................................8-25
Coolant ..................................................8-13
Cruise control indicator lights ..................5-2
Cruise control switches ...........................5-2
Cruise control system (XP530D-A) .........4-1
D
Data recording, vehicle..........................11-2
Diagnostic connector .............................11-2
Dimmer/Pass switch ................................5-1
D-mode (drive mode) (XP530-A,
XP530D-A) ............................................4-3
Drive belt slack ......................................8-23
Drive mode switch ...................................5-2
E
Emergency mode ..................................8-36
Engine break-in .......................................7-5
Engine idling speed, checking ...............8-15
Engine oil and oil filter cartridge ............8-10
Engine serial number ............................11-1
Engine stop switch ..................................5-1
Engine trouble warning light ....................5-2
F
Front and rear brake lever free play, checking ..............................................8-19
Front and rear brake pads, checking.....8-21
Front fork, checking ...............................8-25
Fuel .......................................................5-21
Fuel consumption, tips for reducing ........7-5
Fuel tank cap .........................................5-20
Fuel tank overflow hose ........................5-22 Fuses, replacing.................................... 8-28
H
Handlebar switches................................. 5-1
Hazard switch ......................................... 5-1
High beam indicator light ........................ 5-2
Horn switch ............................................. 5-1
How to lock the centerstand.................. 3-10
How to lock the steering........................ 3-10
I
Identification numbers ........................... 11-1
Ignition circuit cut-off system................. 5-30
Indicator lights and warning lights ........... 5-2
K
Key, handling of smart and mechanical
key ........................................................ 3-3
L
License plate light bulb, replacing ......... 8-32
M
Maintenance and lubrication, periodic .... 8-4
Maintenance, emission control system ... 8-3
Matte color, caution................................. 9-1
Menu switch ............................................ 5-2
Model label............................................ 11-1
Multi-function display .............................. 5-5
O
ON/Start switch ....................................... 5-1
Operating range of the smart key system .................................................. 3-2
P
Panels, removing and installing .............. 8-7
Parking .................................................... 7-6
Parking mode ........................................ 3-13
Part locations .......................................... 2-1
Powering off the vehicle .......................... 3-9
Powering on the vehicle .......................... 3-8
R
Rear brake lock cable, adjusting ........... 8-20
Rear brake lock, checking..................... 8-20
Rear brake lock lever ............................ 5-18
Rear view mirrors .................................. 5-26
S
Safe-riding points .................................... 1-5
Safety information ................................... 1-1
Select switch ........................................... 5-2
Shock absorber assembly..................... 5-27
Sidestand .............................................. 5-29
Smart key ................................................ 3-5
Smart key battery, replacing ................... 3-6
Smart key system ................................... 3-1
Smart key system indicator light ............. 5-3
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