2021 YAMAHA TMAX engine overheat

Instrument and control functions
5-6
5
Fuel meter
The fuel meter indicates the amount of
fuel in the fuel tank. The display seg-
ments of the fuel meter disappear from
“F” (full) towards “E” (empty) as the fuel
level decreases. When the last seg-
ment starts flashing, refuel as soon as
possible.
TIPIf a problem is detected in the fuel me-
ter electrical circuit, the fuel meter will
flash repeatedly. Have a Yamaha deal-
er check the vehicle.
Coolant temperature meter
The coolant temperature varies with
changes in the weather and engine
load. If the top segment starts flashing,
the information display automatically
changes to “C-TEMP” and “Hi” flash-
es. Stop the vehicle and let the engine
cool. (See page 8-38.)TIPThe information display cannot be
changed while the engine is overheat-
ing.NOTICE
ECA10022
Do not continue to operate the en-
g
ine if it is overheatin g.
Eco in dicator
This indicator comes on when the vehi-
cle is being operated in an environ-
mentally friendly, fuel-efficient manner.
The indicator goes off when the vehicle
is stopped.TIPConsider the following tips to reduce
fuel consumption:  Avoid high engine speeds during
acceleration.
 Travel at a constant speed.
1. Fuel meter
1
1. Coolant temperature meter
1
1.
1
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Operation and important ri din g points
7-1
7
EAU15952
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10272
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which coul d cause an acci dent
or injury.
EAU16842
En gine break-inThere is never a more important period
in the life of your engine than the period
between 0 and 1600 km (1000 mi). For
this reason, you should read the fol-
lowing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1600 km (1000 mi). The various parts in
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that
might result in engine overheating
must be avoided.
EAU81480
0–1000 km (0–600 mi)
Avoid prolonged operation above 5100
r/min. NOTICE: After 1000 km (600
mi) of operation, the en gine oil must
b e chan ged , an d the oil filter car-
tri dge or element replace d.
[ECA11283]
1000–1600 km (600–1000 mi)
Avoid prolonged operation above 6100
r/min. 1600 km (1000 mi) an
d b eyon d
The vehicle can now be operated nor-
mally.
NOTICE
ECA25880
 Keep the en gine spee d out of
the hi gh r/min zone.
 If any en gine trou ble shoul d oc-
cur during the en gine break-in
perio d, imme diately have a
Yamaha dealer check the vehi-
cle.
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Periodic maintenance an d a djustment
8-38
8
EAU86420
En gine overheatin g
WARNING
EWAT1041
Do 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 be
b lown out un der pressure, which coul d cause serious injury. Be sure to wait until the en gine has coole d.
 Place a thick rag , like a towel, over the ra diator cap, an d then slowly rotate the cap counterclockwise to the
d etent to allow any resi dual pressure 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.TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended cool-
ant as soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
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12-1
12
Index
AABS warning light ................................... 5-3
Acceleration and deceleration ................ 7-3
Air filter element and check hose,
replacing and cleaning ....................... 8-17
Air filter element, V-belt ........................ 8-18
Anti-lock brake system (ABS)............... 5-19
Auxiliary DC jack .................................. 5-26BBattery .................................................. 8-30
Brake fluid, changing............................ 8-26
Brake fluid level, checking.................... 8-25
Brake lever, front .................................. 5-17
Brake lever, rear ................................... 5-18
Brake levers, lubricating ....................... 8-28
Braking ................................................... 7-3CCables, checking and lubricating ......... 8-27
Canister ................................................ 8-12
Care ........................................................ 9-1
Catalytic converter ............................... 5-22
Centerstand and sidestand, checking and lubricating ................................... 8-28
Coolant ................................................. 8-15
Cruise control indicator lights................. 5-3
Cruise control switches .......................... 5-2
Cruise control system............................. 4-1DData recording, vehicle......................... 11-2
Diagnostic connector ........................... 11-2
Dimmer/Pass switch............................... 5-1
D-mode (drive mode).............................. 4-3
Drive belt .............................................. 8-26
Drive mode switch .................................. 5-2
EEmergency mode ................................. 8-39
Engine break-in ...................................... 7-1
Engine idling speed, checking ............. 8-18
Engine oil and oil filter cartridge........... 8-12
Engine overheating .............................. 8-38
Engine serial number ........................... 11-1
Engine stop switch................................. 5-2FFront and rear brake lever free play, checking ............................................ 8-22
Front and rear brake pads, checking ... 8-24
Front fork, checking ............................. 8-29
Fuel ...................................................... 5-20
Fuel consumption, tips for reducing ...... 7-4
Fuel tank cap........................................ 5-20
Fuel tank overflow hose ....................... 5-22
Fuses, replacing ................................... 8-32HHandlebar switches ............................... 5-1
Hazard switch ........................................ 5-2
High beam indicator light ....................... 5-3
Horn switch ............................................ 5-1
How to lock the centerstand ................ 3-10
How to lock the steering ........................ 3-9IIdentification numbers ......................... 11-1
Ignition circuit cut-off system .............. 5-28
Indicator lights and warning lights ......... 5-2KKey, handling of smart and mechanical key ....................................................... 3-3LLicense plate light bulb, replacing ....... 8-34
MMaintenance and lubrication, periodic ... 8-5
Maintenance, emission control system .................................................. 8-3
Malfunction indicator light (MIL) ............. 5-3
Matte color, caution................................ 9-1
Menu switch ........................................... 5-2
Model label ........................................... 11-1
Multi-function display ............................. 5-5OOperating range of the smart key system .................................................. 3-2PPanels, removing and installing .............. 8-9
Parking.................................................... 7-4
Parking mode ....................................... 3-13
Part locations.......................................... 2-1
Powering off the vehicle ......................... 3-8
Powering on the vehicle ......................... 3-7
Power on/Starter switch ......................... 5-2RRear brake lock cable, adjusting .......... 8-23
Rear brake lock, checking .................... 8-23
Rear brake lock lever ............................ 5-18
Rear view mirrors .................................. 5-24SSafe-riding points ................................... 1-5
Safety information................................... 1-1
Select switch .......................................... 5-2
Shock absorber assembly .................... 5-25
Sidestand.............................................. 5-27
Smart key................................................ 3-5
Smart key battery, replacing................... 3-6
Smart key system ................................... 3-1
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