2020 YAMAHA XMAX 400 ECU

Safety information
1-3
1 engine exhaust. Deadly levels of car-
bon monoxide can collect rapidly and
you can quickly be overcome and un-
able to save yourself. Also, deadly lev-
els of carbon monoxide can linger for
hours or days in enclosed or poorly
ventilated areas. If you experience any
symptoms of carbon monoxide poi-
soning, leave the area immediately, get
fresh air, and SEEK MEDICAL TREAT-
MENT.
Do not run engine indoors. Even if
you try to ventilate engine exhaust
with fans or open windows and
doors, carbon monoxide can rap-
idly reach dangerous levels.
Do not run engine in poorly venti-
lated or partially enclosed areas
such as barns, garages, or car-
ports.
Do not run engine outdoors where
engine exhaust can be drawn into
a building through openings such
as windows and doors.
Loading
Adding accessories or cargo to your
scooter can adversely affect stability
and handling if the weight distribution
of the scooter is changed. To avoid the
possibility of an accident, use extreme
caution when adding cargo or acces-
sories to your scooter. Use extra care
when riding a scooter that has added
cargo or accessories. Here, along with
the information about accessories be-
low, are some general guidelines to fol-
low if loading cargo to your scooter:The total weight of the operator, pas-
senger, accessories and cargo must
not exceed the maximum load limit.
Operation of an overloaded vehicle
could cause an accident.
When loading within this weight limit,
keep the following in mind:
Cargo and accessory weight
should be kept as low and close to
the scooter as possible. Securely
pack your heaviest items as close
to the center of the vehicle as pos-
sible and make sure to distribute
the weight as evenly as possible
on both sides of the scooter to
minimize imbalance or instability.
Shifting weights can create a sud-
den imbalance. Make sure that
accessories and cargo are se-
curely attached to the scooter be-
fore riding. Check accessory
mounts and cargo restraints fre-
quently.
• Properly adjust the suspension
for your load (suspension-ad-
justable models only), and
check the condition and pres-
sure of your tires.
• Never attach any large or heavy
items to the handlebar, front
fork, or front fender. Such items
can create unstable handling or
a slow steering response.
This vehicle is not designed to
pull a trailer or to be attached to
a sidecar.
Maximum load:
184 kg (406 lb)
UBL1E0E0.book Page 3 Thursday, May 11, 2017 8:51 AM

Safety information
1-5
1 Aftermarket Tires and Rims
The tires and rims that came with your
scooter were designed to match the
performance capabilities and to pro-
vide the best combination of handling,
braking, and comfort. Other tires, rims,
sizes, and combinations may not be
appropriate. Refer to page 7-18 for tire
specifications and more information on
replacing your tires.
Transporting the Scooter
Be sure to observe following instruc-
tions before transporting the scooter in
another vehicle.
Remove all loose items from the
scooter.
Point the front wheel straight
ahead on the trailer or in the truck
bed, and choke it in a rail to pre-
vent movement.
Secure the scooter with tie-downs
or suitable straps that are at-
tached to solid parts of the scoot-
er, such as the frame or upper
front fork triple clamp (and not, for
example, to rubber-mounted han-
dlebars or turn signals, or parts
that could break). Choose the lo-
cation for the straps carefully so
the straps will not rub against
painted surfaces during transport.
The suspension should be com-
pressed somewhat by the tie-
downs, if possible, so that the
scooter will not bounce exces-
sively during transport.
EAU57600
Further safe-riding points
Be sure to signal clearly when
making turns.
Braking can be extremely difficult
on a wet road. Avoid hard braking,
because the scooter could slide.
Apply the brakes slowly when
stopping on a wet surface.
Slow down as you approach a
corner or turn. Once you have
completed a turn, accelerate
slowly.
Be careful when passing parked
cars. A driver might not see you
and open a door in your path.
Railroad crossings, streetcar rails,
iron plates on road construction
sites, and manhole covers be-
come extremely slippery when
wet. Slow down and cross them
with caution. Keep the scooter up-
right, otherwise it could slide out
from under you.
The brake pads or linings could
get wet when you wash the scoot-
er. After washing the scooter,
check the brakes before riding.
Always wear a helmet, gloves,
trousers (tapered around the cuff
and ankle so they do not flap), and
a brightly colored jacket.
Do not carry too much luggage on
the scooter. An overloaded scoot-
er is unstable. Use a strong cord
to secure any luggage to the carri-
er (if equipped). A loose load will
affect the stability of the scooter
and could divert your attention
from the road. (See page 1-3.)
UBL1E0E0.book Page 5 Thursday, May 11, 2017 8:51 AM

Smart key system
3-6
3This feature is convenient for locating
your vehicle in a parking lot and other
areas.
To turn the answer-back beeper on
or off
The beeper, which sounds when the
answer-back function is operated, can
be turned on or off according to the fol-
lowing procedure.
1. Turn the smart key on and bring it within operating range.
2. Turn the main switch to “OFF”, and then push the main switch
knob once.
3. Within 9 seconds of pushing the knob, push and hold the knob
again for 5 seconds.
4. When the beeper sounds, the set- ting is complete.
If the beeper: Sounds twice: The beeper is
turned off.
 Sounds once: The beeper is
turned on.
EAU76482
Replacing the smart key bat-
tery
Replace the battery in the following sit-
uations.
 The smart key system indicator
light flashes for about 20 seconds
when the power of the vehicle is
turned on.
 The answer-back function does
not operate when the smart key
button is pushed.
WARNING
EWA20630
The smart key contains a button cell
battery.
 Keep new and used batteries
away from children.
 If the battery compartment does
not close securely, stop using
the smart key and keep it away
from children.
Explosion Hazard - do not mishan-
dle the battery.  Danger of explosion if battery is
incorrectly replaced.
 Replace only with the same or
equivalent type.
1. Smart key system indicator light “ ”
ZAUM14701
UBL1E0E0.book Page 6 Tuesday, September 5, 2017 3:17 PM

Smart key system
3-10
32. While the smart key system indi-
cator light is on, turn the main
switch to “OPEN”.
3. To open the seat, push the
“SEAT” button, and then lift the
rear of the seat.
4. To open storage compartment A,
push the “LID” button.
TIP
Make sure that the seat and storage
compartment are securely closed be-
fore starting off.
Open position reminder
To prevent you from accidentally leav-
ing the vehicle unlocked by walking
away with the main switch still in the“OPEN” position, the smart key system
beeper will sound under the following
conditions.
When the main switch has been in
the “OPEN” position for 3 minutes
If the smart key is turned off while
the main switch is in the “OPEN”
position
If you walk out of range of the
smart key system with the main
switch in the “OPEN” position
If the beeper sounds after 3 minutes,
turn the main switch to “OFF” or “ ”.
If the beeper sounds because the
smart key was turned off or moved out
of range, turn the smart key on and
walk back into range.
TIP
The beeper will turn off after 1
minute.
The seat can also be opened with
the mechanical key. (See page
4-21.)
EAU76521“ ” (lock)
The steering is locked and all electrical
systems are off.
1. Storage compartment A
2. “LID” button
1. “SEAT” button
ZAUM1474
1
2
ZAUM1473
1
1. Push.
2. Push and turn.
ZAUM1475
12
UBL1E0E0.book Page 10 Thursday, May 11, 2017 8:51 AM

Instrument and control functions
4-14
4
EAU12952
Rear brake lever
The rear brake lever is located on the
left side of the handlebar. To apply the
rear brake, pull this lever toward the
handlebar grip.
EAU12964
Rear brake lock lever
This vehicle is equipped with a rear
brake lock lever to prevent the rear
wheel from moving while stopped at
traffic signals, railroad crossings, etc.
To lock the rear wheel
Push the rear brake lock lever to the
left until it snaps into place.
To unlock the rear wheel
Push the rear brake lock lever back to
the original position.
TIP
Be sure to check that the rear
wheel does not move when the
rear brake lock lever is applied.
To provide secure locking of the
rear wheel, apply the rear brake le-
ver first before moving the rear
brake lock lever to the left.
WARNING
EWA12362
Never move the rear brake lock lever
to the left while the vehicle is mov-
ing, otherwise loss of control or an
accident may result. Make sure that
1. Rear brake lever
1
1. Rear brake lock lever
1
UBL1E0E0.book Page 14 Thursday, May 11, 2017 8:51 AM

Instrument and control functions
4-15
4 the vehicle is stopped before mov-
ing the rear brake lock lever to the
left.
EAU78200
ABS
The Yamaha ABS (Anti-lock Brake
System) features a dual electronic con-
trol system, which acts on the front and
rear brakes independently.
Operate the brakes with ABS as you
would conventional brakes. If the ABS
is activated, a pulsating sensation may
be felt at the brake levers. In this situa-
tion, continue to apply the brakes and
let the ABS work; do not “pump” the
brakes as this will reduce braking ef-
fectiveness.
WARNING
EWA16051
Always keep a sufficient distance
from the vehicle ahead to match the
riding speed even with ABS.
The ABS performs best with
long braking distances.
On certain surfaces, such as
rough or gravel roads, the brak-
ing distance may be longer with
the ABS than without.
The ABS is monitored by an ECU,
which will revert the system to conven-
tional braking if a malfunction occurs.
TIP
The ABS performs a self-diagno-
sis test each time the vehicle first
starts off after the main switch is
turned to “ON” and the vehicle has
traveled at a speed of 10 km/h (6
mi/h) or higher. During this test, a
“clicking” noise can be heard from
the front of the vehicle, and if ei-
ther brake lever is even slightly ap-
plied, a vibration can be felt at the
lever, but these do not indicate a
malfunction.
UBL1E0E0.book Page 15 Thursday, May 11, 2017 8:51 AM

Instrument and control functions
4-19
4
EAU13213
Fuel
Make sure there is sufficient gasoline in
the tank.
WARNING
EWA10882
Gasoline and gasoline vapors are
extremely flammable. To avoid fires
and explosions and to reduce the
risk of injury when refueling, follow
these instructions.
1. Before refueling, turn off the en-
gine and be sure that no one is sit-
ting on the vehicle. Never refuel
while smoking, or while in the vi-
cinity of sparks, open flames, or
other sources of ignition such as
the pilot lights of water heaters
and clothes dryers.
2. Do not overfill the fuel tank. Stop
filling when the fuel reaches the
bottom of the filler tube. Because
fuel expands when it heats up,
heat from the engine or the sun
can cause fuel to spill out of the
fuel tank.
3. Wipe up any spilled fuel immedi-
ately. NOTICE: Immediately
wipe off spilled fuel with a clean,dry, soft cloth, since fuel may
deteriorate painted surfaces or
plastic parts.
[ECA10072]
4. Be sure to securely close the fuel
tank cap.
WARNING
EWA15152
Gasoline is poisonous and can
cause injury or death. Handle gaso-
line with care. Never siphon gasoline
by mouth. If you should swallow
some gasoline or inhale a lot of gas-
oline vapor, or get some gasoline in
your eyes, see your doctor immedi-
ately. If gasoline spills on your skin,
wash with soap and water. If gaso-
line spills on your clothing, change
your clothes.
EAU75300
NOTICE
ECA11401
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the valves and piston rings,
as well as to the exhaust system.
1. Fuel tank filler tube
2. Maximum fuel level
1
2
Recommended fuel:
Premium unleaded gasoline (Gaso-
hol [E10] acceptable)
Fuel tank capacity:
13 L (3.4 US gal, 2.9 Imp.gal)
Fuel reserve amount:
2.4 L (0.63 US gal, 0.53 Imp.gal)
UBL1E0E0.book Page 19 Thursday, May 11, 2017 8:51 AM

Periodic maintenance and adjustment
7-14
73. If the coolant is at or below the
minimum level mark, remove the
left floorboard mat by pulling it up.
4. Remove the coolant reservoir cov-
er.
5. Remove the coolant reservoir cap,
add coolant to the maximum level
mark, and then install the reservoir
cap. WARNING! Remove only
the coolant reservoir cap. Never
attempt to remove the radiator
cap when the engine is hot.
[EWA15162] NOTICE: If coolant is not
available, use distilled water or
soft tap water instead. Do not
use hard water or salt water
since it is harmful to the engine.
If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-
wise the cooling system will notbe protected against frost and
corrosion. If water has been
added to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as
soon as possible, otherwise the
effectiveness of the coolant will
be reduced.
[ECA10473]
6. Install the coolant reservoir cover.
7. Place the left floorboard mat in the
original position and push it down-
ward to secure it.
EAU33032Changing the coolant
The coolant must be changed at the in-
tervals specified in the periodic mainte-
nance and lubrication chart. Have a
Yamaha dealer change the coolant.
WARNING! Never attempt to remove
the radiator cap when the engine is
hot.
[EWA10382]
1. Floorboard mat
1. Coolant reservoir cover
1
1
1. Coolant reservoir cap
Coolant reservoir capacity (up to
the maximum level mark):
0.18 L (0.19 US qt, 0.16 Imp.qt)
1
UBL1E0E0.book Page 14 Thursday, May 11, 2017 8:51 AM