2021 YAMAHA TMAX light

Periodic maintenance an d a djustment
8-11
8 To install the panel
Place the panel in the original position,
and then install the screws.
EAU19643
Checkin
g the spark plu gsThe 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.
Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the spark
plug threads.
1. Screw
2. Panel C
1
2
Specifie d spark plu g:
NGK/LMAR7G1. Spark plug gapSpark plu g g ap:
0.7–0.8 mm (0.028–0.031 in)
Ti ghtenin g torque:
Spark plug: 13 N·m (1.3 kgf·m, 9.6 lb·ft)
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Periodic maintenance an d a djustment
8-12
8
TIPIf a torque wrench is not available
when installing 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
specified torque as soon as possible.
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
following:
 Check each hose connection.
 Check each hose and canister for
cracks or damage. Replace if
damaged.
 Make sure that the canister
breather is not blocked, and if
necessary, clean it.
EAU77364
Engine oil an d oil filter car-
tri dgeThe 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 en gine oil level
1. Place the vehicle on the center- stand. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for two minutes, and then turn it off.
3. Wait two minutes until the oil level settles.
4. Check the oil level through the check window located at the bot-
tom-left side of the crankcase.TIPThe engine oil should be between the
minimum and maximum level marks.
1. Canister
2. Canister breather
12
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Periodic maintenance an d a djustment
8-32
8
EAU81473
Replacin g the fusesFuse box1, brake light fuse and cruise
control fuse are located behind panel
A. (See page 8-9.)
Fuse box 2 and main fuse are located
behind the windshield.
TIPTo access the main fuse, remove the
starter relay cover.To access fuse box 2 and the main
fuse, proceed as follows.
1. Remove panel A. (See page 8-9.) 2. Remove the screw access covers
by removing the quick fasteners.
3. Remove the caps.
4. Remove the windshield by remov- ing the screws.
1. Fuse box 1
2. ABS control unit fuse
3. Auxiliary DC jack fuse
4. Headlight fuse
5. Electronic throttle valve fuse
6. ABS motor fuse
7. ABS solenoid fuse
8. Spare fuse
9. Cruise control fuse
10.Brake light fuse2
3
4
5
6
7
8
8
9
10
1 1
1. Starter relay cover
2. Main fuse
3. Spare main fuse
4. Fuse box 2
5. Signaling system fuse
6. Ignition fuse
7. Taillight fuse
8. Radiator fan motor fuse
9. Fuel injection system fuse
10.Backup fuse
11.Spare fuse
12.Windshield motor fuse
5
6
7
8
9
10
11 12 11
1 1
2
3
2
3
4 4
1. Screw access cover
2. Quick fastener
1. Cap
1
212
1
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Periodic maintenance an d a djustment
8-33
8 5. Remove the inner panel by remov-
ing the bolts and quick fasteners.
6. Install the inner panel by installing the bolts and quick fasteners. 7. Install the windshield by installing
the screws.
8. Install the caps.
9. Install the screw access covers by installing the quick fasteners.
10. Install the panel.
If a fuse is blown, replace it as follows. 1. Turn the vehicle power off.
2. Remove the blown fuse, and then install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a hi gher ampera ge
ratin g than recommen ded to
avoi d causin g extensive d am-
a g e to the electrical system an d
possi bly a fire.
[EWA15132]
1. Windshield
2. Screw
1. Inner panel
2. Bolt
3. Quick fastener
1
2
2 21 2
2
3 3
2
1. Screw access cover
1
Specified fuses:
Main fuse:
40.0 A
Headlight fuse:
7.5 A
Taillight fuse: 7.5 A
Signaling system fuse: 7.5 A
Ignition fuse:
7.5 A
Radiator fan motor fuse: 15.0 A
Fuel injection system fuse: 7.5 A
ABS control unit fuse:
7.5 A
ABS motor fuse: 30.0 A
ABS solenoid fuse: 15.0 A
Auxiliary DC jack fuse:
2.0 A
Backup fuse: 15.0 A
Electronic throttle valve fuse: 7.5 A
Brake light fuse:
1.0 A
Cruise control fuse: 1.0 A
Windshield motor fuse: 20.0 A
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Periodic maintenance an d a djustment
8-34
8
3. Turn the vehicle power on and turn
on the electrical circuit in question
to check if the device operates.
4. If the fuse immediately blows again, have a Yamaha dealer
check the electrical system.
EAU80380
Vehicle li ghtsExcept for the license plate light bulb,
this model’s lights are all LED.
If an LED light does not come on,
check the fuses and then have a
Yamaha dealer check the vehicle. If the
license plate light does not come on,
check and replace the bulb. (See page
8-34.)NOTICE
ECA16581
Do not affix any type of tinted film or
stickers to the head lig ht lens.
EAU81491
Replacin g the license plate
lig ht bul b1. Remove the nuts securing the li-
cense plate light unit.
2. Pull the license plate light unit sep- arate from the rear fender. (Rein-
stall the collars if they fall out.)
1. Headlight
2. Auxiliary light2 1
2
1
1. License plate light unit
2. Nut
21
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Periodic maintenance an d a djustment
8-35
8 3. Remove the burnt-out bulb by
pulling it out.
4. Insert a new bulb into the socket, and push the socket in place.
5. Install the license plate unit onto the rear fender.
6. Install the nuts and tighten to the specified torque.
EAU25865
Trou bleshootin gAlthough your Yamaha received a thor-
ough inspection before shipment from
the factory, trouble may occur during
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 vehicle re-
quire any repair, take it to an
authorized Yamaha dealer whose
skilled technicians have the necessary
tools, experience, and know-how to
properly service your Yamaha vehicle.
Be sure to use only genuine Yamaha
replacement parts. Although imitation
parts may look similar to genuine parts,
they are often inferior in quality, have a
shorter service life, and can lead to an
expensive repair bill later on.
WARNING
EWA15142
When checkin g the fuel system, do
not smoke, an d make sure there are
no open flames or sparks in the ar- ea, inclu
din g pilot li ghts from water
heaters or furnaces. Gasoline or
g asoline vapors can i gnite or ex-
plod e, causin g severe injury or prop-
erty damag e.
EAU77992
Smart key system trou bleshootin g
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 8-30.)
1. Collar
2. License plate light bulb
3. License plate light unitTightenin g torque:
License plate light unit nut:
3.8 N·m (0.38 kgf·m, 2.8 lb·ft)
3
2
1
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Periodic maintenance an d a djustment
8-39
8
EAU77373
Emer gency mo deWhen the smart key is lost, damaged,
or its battery has discharged, the vehi-
cle can still be turned on and the en-
gine started. You will need a
mechanical key and the smart key sys-
tem identification number. To operate
the vehicle in emergency mode, carry
out the following steps.TIPEmergency mode operation will be
cancelled if the respective steps are
not carried out within the time set for

switch is pushed.1. Stop the vehicle in a safe place.
2. Unlock the seat by inserting the
mechanical key into the lock lo-
cated right side of body and turn it
counter clockwise. 3. Open the seat and check that the
trunk light comes on.
4. Ž switch once.
5. Without completely shutting the seat, raise and lower it three times
within 10 seconds.
TIPUse the rear storage compartment
light as a guide when raising and low-
ering the seat.
The smart key system indicator
light on the speedometer will
come on for three seconds to indi-
cate the transition to emergency
mode. 6. After the smart key system indica-
tor light goes off, use the / Ž
switch to enter the identification
number.
1. Smart key system indicator light Ž
1. Identification number
1 1
123456
1
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Periodic maintenance an d a djustment
8-40
8
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.
↓
Release the “ / ” switch after
the smart key system indicator
light flashes once.
↓
The first digit of the identification
number has been set as “1”.
↓
Push and hold the “ / ” switch
again.
↓ Release the “ / ” switch after
the smart key system indicator
light flashes twice.
↓
The second digit has been set as
“2”.
↓
Repeat the above procedure until
all digits of the identification num-
ber have been set. The smart key
system indicator light will come on
for 10 seconds if the correct iden-
tification number was entered.
TIPEmergency mode will be terminated
when either one of the following situa-
tions apply. In this case, start over
again from step 4.
 When there are no “ / ” switch
operations for 10 seconds during
the identification number input
process. 
When the smart key system indi-
cator light is allowed to flash 9 or
more times.
8. Press the “ON/ ” switch while
the smart key system indicator
light is on to turn on the power to
the vehicle. The engine can now
be started.TIPIf the identification number is not
correctly entered, the smart key
system indicator light will flash
rapidly for 3 seconds and emer-
gency mode is terminated. In this
case, start over again from step 4.
 To lock the handlebar after turning
on the vehicle in emergency
mode, turn the vehicle power off,
wait 30 seconds, and then turn the
handlebar to the left and press the
“OFF/LOCK” switch.
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