engine YAMAHA TMAX 2021 Owner's Manual

Instrument and control functions
5-27
5 2. Turn the vehicle power off.
3. Remove the auxiliary DC jack cap.
4. Turn the accessory off.
5. Insert the accessory plug into the
auxiliary DC jack.
6. Turn the vehicle power on and start the engine.
7. Turn the accessory on.
TIPWhen finished with your ride, be sure
to turn off the accessory, disconnect it,
and then install the auxiliary DC jack
cap.
WARNING
EWA14361
To prevent electrical shock or short-
circuiting , make sure that the cap is
installe d when the auxiliary DC jack
is not bein g use d.
EAU15306
Si destan dThe sidestand is located on the left
side of the frame. Raise the sidestand
or lower it with your foot while holding
the vehicle upright.TIPThe built-in sidestand switch is part of
the ignition circuit cut-off system,
which cuts the ignition in certain situa-
tions. (See the following section for an
explanation of the ignition circuit cut-
off system.)
WARNING
EWA10242
The vehicle must not be ri dden with
the si destan d d own, or if the si de-
stan d cannot b e properly moved up
(or does not stay up), otherwise the
si destan d coul d contact the g round
an d d istract the operator, resultin g
in a possi ble loss of control.
Yamaha’s ig nition circuit cut-off
system has been desi gne d to assist
the operator in fulfillin g the respon-
si bility of raisin g the si destan d b e-
fore startin g off. Therefore, check this system reg
ularly and have a
Yamaha dealer repair it if it does not
function properly.
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Instrument and control functions
5-28
5
EAU63612
Ig nition circuit cut-off systemThe ignition circuit cut-off system
(comprising the sidestand switch and
brake light switches) has the following
functions.
 It prevents starting when the side-
stand is up, but neither brake is applied.
 It prevents starting when either
brake is applied, but the sidestand
is still down.
 It cuts the running engine when
the sidestand is moved down.
Periodically check the operation of the
ignition circuit cut-off system accord-
ing to the following procedure.
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Instrument and control functions
5-29
5
With the engine turned off:
1. Move the sidestand down.
2. Make sure that the engine stop switch is turned on.
3. Turn the vehicle power on.
4. Keep the front or rear br ake applied.
5. Push the “ON/ ” switch.
Does the engine start?
With the engine still off:
6. Move the sidestand up.
7. Keep the front or rear br ake applied.
8. Push the “ON/ ” switch.
Does the engine start?
With the engine still running:
9. Move the sidestand down.
Does the engine stall?
The system is OK. The scooter can be ridden. The sidestand switch may not be working correctly.
The scooter should not be ridden
until
checked by a Y amaha dealer.
The sidestand switch may not be working correctly.
The scooter should not be ridden until
checked by a Y amaha dealer.
YES NO YES NO NO YES
The brake switch may not be working correctly.
The scooter should not be ridden until
checked by a Y amaha dealer.The vehicle must be placed on the center-
stand during this inspection. If a malfunction is noted, have a Yamaha
dealer check the system before riding.
WARNING
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For your safety – pre-operation checks
6-1
6
EAU1559B
Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always follow the inspection
and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWA11152
Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment d amage.
Do not operate the vehicle if you fin d any pro blem. If a pro blem cannot b e corrected b y the proce dures provi ded in
this manual, have the vehicle inspecte d b y a Yamaha dealer.Before using this vehicle, check the following points:
ITEM CHECKS PAGE
Fuel • Check fuel level in fuel tank.
• Refuel if necessary.
• Check fuel line for leakage.
• Check fuel tank overflow hose for obstructions, cracks or damage, and check
hose connection. 5-20, 5-22
En gine oil • Check oil level in engine.
• If necessary, add recommended oil to specified level.
• Check vehicle for oil leakage. 8-12
Coolant • Check coolant level in reservoir.
• If necessary, add recommended coolant to specified level.
• Check cooling system for leakage. 8-15
Front brake • Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check brake pads for wear.
• Replace if necessary.
• Check fluid level in reservoir.
• If necessary, add specified brake fluid to specified level.
• Check hydraulic system for leakage. 8-22, 8-24, 8-25
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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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Operation and important rid ing points
7-2
7
EAU88770
Startin g the eng ineThe ignition circuit cut-off system will
enable starting when the sidestand is
up.
To start the engine1. With the smart key turned on, ap-
proach the vehicle.
2. Push the “ON/ ” switch and set the engine stop switch to the run
position.
Upon authentication of the smart
key, the beeper will sound twice
and the centerstand and steering
locks (if applied) will be released.
3. Confirm the indicator and warning light(s) come on for a few sec-
onds, and the go off. (See page
5-2.)TIPDo not start the engine if the mal-
function indicator light remains on.
 The ABS warning light should
come on and stay on until the ve-
hicle reaches a speed of 10 km/h
(6 mi/h).
NOTICE
ECA24110
If a warnin g or in dicator li ght does
not work as d escribed a bove, have a
Yamaha dealer check the vehicle.4. Close the throttle completely.
5. While applying the front or rear
brake, push the “ON/ ” switch.
6. Release the “ON/ ” switch when the engine starts, or after 5 sec-
onds. Wait 10 seconds before
pressing the switch again to allow
battery voltage to restore.NOTICE
ECA11043
For maximum en gine life, never ac-
celerate har d when the en gine is
col d!
EAU88780
TIPThis model is equipped with:
 a lean angle sensor. This sensor
stops the engine in case of a vehi-
cle turnover. If this happens, the
malfunction indicator light will
come on, but this is not a malfunc-
tion. Turn the vehicle power off
and then back on again to cancel
the indicator light. Failing to do so
will prevent the engine from start-
ing even though the engine will
crank when pushing the start
switch.
 an engine auto-stop system. The
engine stops automatically if left
idling for 20 minutes. If the engine
stops, simply push the start
switch to restart the engine.
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Operation and important rid ing points
7-4
7 Front
Rear
EAU16821
Tips for re
ducin g fuel con-
sumptionFuel consumption depends largely on
your riding style. Consider the follow-
ing tips to reduce fuel consumption:
 Avoid high engine speeds during
acceleration.
 Avoid high engine speeds with no
load on the engine.
 Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at traf-
fic lights or at railroad crossings).
EAU77962
Parkin gWhen parking, turn the vehicle power
off and then turn the smart key off.
If the sidestand is lowered when the
engine is running, the engine will stop
and the beeper will sound to prevent
you from forgetting to turn off the vehi-
cle power. To stop the beeper, turn the
vehicle power off or raise the side-
stand. When leaving the vehicle, make sure
you apply the steering lock and center-
stand lock. Take the smart key with
you.
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Operation and important ri din g points
7-5
7
TIP After parking, if the smart key is
not turned off and is within operat-
ing range, other people may be
able to start the engine and oper-
ate the vehicle.
 The sidestand alarm beeper can
be set to not activate. Contact
your Yamaha dealer.
WARNING
EWA10312
Since the en gine an d exhaust
system can b ecome very hot,
park in a place where pe destri-
ans or chil dren are not likely to
touch them an d b e burne d. 
Do not park on a slope or on soft
groun d, otherwise the vehicle
may overturn, increasin g the
risk of a fuel leak an d fire.
 Do not park near grass or other
flamma ble materials which
mi ght catch fire.
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Periodic maintenance an d a djustment
8-1
8
EAU17246
Periodic inspection, adjustment, and
lubrication will keep your vehicle in the
safest and most efficient condition
possible. Safety is an obligation of the
vehicle owner/operator. The most im-
portant points of vehicle inspection,
adjustment, and lubrication are ex-
plained on the following pages.
The intervals given in the periodic
maintenance charts should be simply
considered as a general guide under
normal riding conditions. However, de-
pending on the weather, terrain, geo-
graphical location, and individual use,
the maintenance intervals may need to
be shortened.
WARNING
EWA10322
Failure to properly maintain the vehi-
cle or performin g maintenance ac-
tivities incorrectly may increase
your risk of injury or death durin g
service or while usin g the vehicle. If
you are not familiar with vehicle ser-
vice, have a Yamaha d ealer perform
service.
WARNING
EWA15123
Turn off the en gine when performin g
maintenance unless otherwise
specified .
 A runnin g en gine has movin g
parts that can catch on body
parts or clothin g an d electrical
parts that can cause shocks or
fires.
 Runnin g the en gine while ser-
vicin g can lead to eye injury,
b urns, fire, or car bon monoxi de
poisonin g – possi bly lea din g to
d eath. See pag e 1-3 for more in-
formation a bout car bon monox-
i d e.
WARNING
EWA15461
Brake discs, calipers, drums, and
linin gs can b ecome very hot d uring
use. To avoi d possi ble burns, let
b rake components cool before
touchin g them.
EAU17303
Emission controls not only function to
ensure cleaner air, but are also vital to
proper engine operation and maximum
performance. In the following periodic
maintenance charts, the services relat-
ed to emissions control are grouped
separately. These services require
specialized data, knowledge, and
equipment. Maintenance, replace-
ment, or repair of the emission control
devices and systems may be per-
formed by any repair establishment or
individual that is certified (if applicable).
Yamaha dealers are trained and equipped to perform these particular
services.
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Periodic maintenance an d a djustment
8-3
8
EAU71033
Perio dic maintenance chartsTIP Items marked with an asterisk should be performed by your Yamaha dealer because these items require special tools,
data, and technical skills.
 From 50000 km (30000 mi), repeat the maintenance intervals starting from 10000 km (6000 mi).
 The annual checks must be performed every year, except if a distance- based maintenance is performed in-
stea d.
EAU71051
Perio dic maintenance chart for the emission control systemNO. ITEM CHECK OR MAINTENANCE JOB ODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi) 10000 km
(6000 mi) 20000 km
(12000 mi) 30000 km
(18000 mi) 40000 km
(24000 mi)
1 *Fuel line • Check fuel hoses for cracks or
damage.
• Replace if necessary. √√√√√
2 *Spark plu gs • Check condition.
• Adjust gap and clean.
√√
• Replace. √√
3 *Valve clearance • Check and adjust. Every 40000 km (24000 mi)
4 *Fuel injection • Check engine idle speed.
√√√√√√
• Check and adjust synchroniza- tion. √√√√√
5 *Exhaust system • Check for leakage.
• Tighten if necessary.
• Replace gaskets if necessary. √√√√√
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