YAMAHA XENTER 150 2016 Workshop Manual

Periodic maintenance and adjustment6-16
1
2
3
4
567
8
9
10
11
12
EAUT3551
Air filter and V-belt case air
filter elementsThe air filter and V-belt case air filter el-
ements should be cleaned or replaced
at the intervals specified in the periodic
maintenance and lubrication chart.
Check both filter elements more fre-
quently if you are riding in unusually
wet or dusty areas. The air filter check
hose must be frequently checked and
cleaned if necessary.
Replacing the air filter element 1. Place the scooter on the center- stand.
2. Remove the screw cover and air filter case cover by removing the
screws. 3. Pull the air filter element out.
4. Insert a new air filter element into
the air filter case. NOTICE: Make
sure that the air filter element is
properly seated in the air filter
case. The engine should never
be operated without the air filter
element installed, otherwise the
piston(s) and/or cylinder(s) may
become excessively worn.
[ECA10482]
5. Install the air filter case cover by in- stalling the screws and the screw
cover. Cleaning the air filter check hose
1. Check the hose on the rear side of the air filter case for accumulated
dirt or water.
2. If dirt or water is visible, remove the hose, clean it, and then install
it.
Cleaning the V-belt case air filter el-
ement 1. Remove panel B. (See page 6-9.)
2. Remove the V-belt air filter case cover by removing the bolts.
3. Pull the air filter element out, and then clean it with compressed air.
NOTICE: To avoid damaging the
air filter element, handle it gen-1. Screw cover
2. Air filter case cover
3. Air filter case drain hose
2
3
1
1. V-belt air filter case cover
1
U52SE1E0 16 ページ ２０１５年９月１６日　水曜日　午後５時２７分

Periodic maintenance and adjustment
6-17
1
2
3
4
56
7
8
9
10
11
12 tly and carefully, and do not
twist it.
[ECA10522]
4. Insert the element into the air filter
case.
5. Install the V-belt air filter case cov- er by installing the bolts.
6. Install the panel.
EAU44735
Checking the engine idling
speedCheck the engine idling speed and, if
necessary, have it corrected by a
Yamaha dealer.
EAU21386
Checking the throttle grip free
playMeasure the throttle grip free play as
shown.
Periodically check the throttle grip free
play and, if necessary, have a Yamaha
dealer adjust it.
1. V-belt case air filter element
1
Engine idling speed: 1600–1800 r/min
1. Throttle grip free playThrottle grip free play:3.0–5.0 mm (0.12–0.20 in)
1
U52SE1E0 17 ページ ２０１５年９月１６日　水曜日　午後５時２７分

Periodic maintenance and adjustment6-18
1
2
3
4
567
8
9
10
11
12
EAU21402
Valve clearanceThe valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
EAU61710
TiresTires are the only contact between the
vehicle and the road. Safety in all con-
ditions of riding depends on a relatively
small area of road contact. Therefore, it
is essential to maintain the tires in good
condition at all times and replace them
at the appropriate time with the speci-
fied tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING
EWA10504
Operation of this vehicle with im-
proper tire pressure may cause se-
vere injury or death from loss of
control.
The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).

The tire air pressure must be ad-
justed in accordance with the
riding speed and with the total weight of rider, passenger, car-
go, and accessories approved
for this model.WARNING
EWA10512
Never overload your vehicle. Opera-
tion of an overloaded vehicle couldcause an accident.
Tire air pressure (measured on cold
tires):
Up to 90 kg (198 lb) load: Front:175 kPa (1.75 kgf/cm
2, 25 psi)
Rear: 200 kPa (2.00 kgf/cm2, 29 psi)
90 kg (198 lb) to maximum load:
Front:175 kPa (1.75 kgf/cm2, 25 psi)
Rear:
225 kPa (2.25 kgf/cm2, 33 psi)
Maximum load*: 179 kg (395 lb)
* Total weight of rider, passenger, car- go and accessories
U52SE1E0 18 ページ ２０１５年９月１６日　水曜日　午後５時２７分

Periodic maintenance and adjustment
6-19
1
2
3
4
56
7
8
9
10
11
12 Tire inspection
The tires must be checked before each
ride. If the center tread depth reaches
the specified limit, if the tire has a nail or
glass fragments in it, or if the sidewall is
cracked, have a Yamaha dealer re-
place the tire immediately.
TIPThe tire tread depth limit may differ
from country to country. Always complywith the local regulations.
WARNING
EWA10472

Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the vehi-
cle with excessively worn tires
decreases riding stability and
can lead to loss of control.

The replacement of all wheel
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience to do so.

Ride at moderate speeds after
changing a tire since the tire
surface must first be “broken
in” for it to develop its optimalcharacteristics.
Tire information
This model is equipped with tubeless
tires and tire air valves.
Tires age, even if they have not been
used or have only been used occasion-
ally. Cracking of the tread and sidewall
rubber, sometimes accompanied by
carcass deformation, is an evidence of ageing. Old and aged tires shall be
checked by tire specialists to ascertain
their suitability for further use.
WARNING
EWA10462
The front and rear tires should be of
the same make and design, other-
wise the handling characteristics of
the vehicle may be different, whichcould lead to an accident.
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha.
1. Tire tread depth
2. Tire sidewallMinimum tire tread depth (front and
rear):
1.6 mm (0.06 in)ZAUM00**
1
2
Front tire:Size: 100 / 80 - 16M/C 50P
Manufacturer/model: DURO / DM1157F
Rear tire: Size:
120 / 80 - 16M/C 60P
Manufacturer/model: DURO / DM1157
U52SE1E0 19 ページ ２０１５年９月１６日　水曜日　午後５時２７分

Periodic maintenance and adjustment6-20
1
2
3
4
567
8
9
10
11
12
EAU21963
Cast wheelsTo maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified wheels.
The wheel rims should be checked
for cracks, bends, warpage or oth-
er damage before each ride. If any
damage is found, have a Yamaha
dealer replace the wheel. Do not
attempt even the smallest repair to
the wheel. A deformed or cracked
wheel must be replaced.

The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
EAUS2002
Checking the front brake lever
free playPeriodically check the brake lever free
play. If the free play exceeds 10 mm
(0.39 in), have a Yamaha dealer adjust
it.
WARNING
EWA10642
An incorrect brake lever free play in-
dicates a hazardous condition in the
brake system. Do not operate the ve-
hicle until the brake system has
been checked or repaired by aYamaha dealer.
EAU22172
Adjusting the rear brake lever
free playMeasure the rear brake lever free play
as shown.
Periodically check the brake lever free
play and, if necessary, adjust it as fol-
lows.
To increase the brake lever free play,
turn the adjusting nut at the brake shoe
plate in direction (a). To decrease the
brake lever free play, turn the adjusting
nut in direction (b).
1. Front brake lever free play
1
1. Rear brake lever free playRear brake lever free play: 10.0–15.0 mm (0.39–0.59 in)1
U52SE1E0 20 ページ ２０１５年９月１６日　水曜日　午後５時２７分

Periodic maintenance and adjustment
6-21
1
2
3
4
56
7
8
9
10
11
12
WARNING
EWA10651
If proper adjustment cannot be ob-
tained as described, have a Yamahadealer make this adjustment.
EAU22382
Checking the front brake pads
and rear brake shoes The front brake pads and the rear brake
shoes must be checked for wear at the
intervals specified in the periodic main-
tenance and lubrication chart.
EAU22421
Front brake pads
Each front brake pad is provided with a
wear indicator groove, which allows
you to check the brake pad wear with-
out having to disassemble the brake.
To check the brake pad wear, check
the wear indicator groove. If a brake pad has worn to the point that the wear
indicator groove has almost disap-
peared, have a Yamaha dealer replace
the brake pads as a set.
EAU22541
Rear brake shoes
The rear brake is provided with a wear
indicator, which allows you to check the
brake shoe wear without having to dis-
assemble the brake. To check the
brake shoe wear, check the position of
the wear indicator while applying the
brake. If a brake shoe has worn to the
point that the wear indicator reaches
the wear limit line, have a Yamaha
dealer replace the brake shoes as a
1. Rear brake lever free play adjusting nut
(a)
(b)
1
1. Brake pad wear indicator groove
2. Brake pad
3. Brake disc
2
3
1
1. Wear indicator
2. Wear limit line
1
2
U52SE1E0 21 ページ ２０１５年９月１６日　水曜日　午後５時２７分

Periodic maintenance and adjustment6-22
1
2
3
4
567
8
9
10
11
12
set.
EAU32346
Checking the brake fluid levelBefore riding, check that the brake fluid
is above the minimum level mark.
Check the brake fluid level with the top
of the reservoir level. Replenish the
brake fluid if necessary.
WARNING
EWA15991
Improper maintenance can result in
loss of braking ability. Observe
these precautions:
Insufficient brake fluid may al-
low air to enter the brake sys-
tem, reducing braking performance.

Clean the filler cap before re-
moving. Use only DOT 4 brake
fluid from a sealed container.

Use only the specified brake flu-
id; otherwise, the rubber seals
may deteriorate, causing leak-
age.

Refill with the same type of
brake fluid. Adding a brake fluid
other than DOT 4 may result in a
harmful chemical reaction.

Be careful that water does not
enter the brake fluid reservoir
when refilling. Water will signifi-
cantly lower the boiling point of
the fluid and may result in vaporlock.
NOTICE
ECA17641
Brake fluid may damage painted sur-
faces or plastic parts. Always cleanup spilled fluid immediately.
As the brake pads wear, it is normal for
the brake fluid level to gradually go
down. A low brake fluid level may indi-
cate worn brake pads and/or brake sys-
tem leakage; therefore, be sure to
1. Minimum level markSpecified brake fluid:
DOT 4
1
U52SE1E0 22 ページ ２０１５年９月１６日　水曜日　午後５時２７分

Periodic maintenance and adjustment
6-23
1
2
3
4
56
7
8
9
10
11
12 check the brake pads for wear and the
brake system for leakage. If the brake
fluid level goes down suddenly, have a
Yamaha dealer check the cause before
further riding.
EAU22724
Changing the brake fluid Have a Yamaha dealer change the
brake fluid at the intervals specified in
the periodic maintenance and lubrica-
tion chart. In addition, have the oil seals
of the brake master cylinder and caliper
as well as the brake hose replaced at
the intervals listed below or whenever
they are damaged or leaking.
Oil seals: Replace every two
years.

Brake hose: Replace every four
years.
EAU23098
Checking and lubricating the
cablesThe operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
housing of cables may result in in-
ternal rusting and cause interfer-
ence with cable movement. Replace
damaged cables as soon as possi-
ble to prevent unsafe condi-
tions.
[EWA10712]
Recommended lubricant:
Yamaha cable lubricant or other suit-
able cable lubricant
U52SE1E0 23 ページ ２０１５年９月１６日　水曜日　午後５時２７分

Periodic maintenance and adjustment6-24
1
2
3
4
567
8
9
10
11
12
EAU23115
Checking and lubricating the
throttle grip and cableThe operation of the throttle grip should
be checked before each ride. In addi-
tion, the cable should be lubricated by a
Yamaha dealer at the intervals speci-
fied in the periodic maintenance chart.
The throttle cable is equipped with a
rubber cover. Make sure that the cover
is securely installed. Even though the
cover is installed correctly, it does not
completely protect the cable from water
entry. Therefore, use care not to pour
water directly onto the cover or cable
when washing the vehicle. If the cable
or cover becomes dirty, wipe clean with
a moist cloth.
EAUT3571
Lubricating the front and rear
brake leversFront and rear brake levers
The pivoting points of the front and rear
brake levers should be lubricated by a
Yamaha dealer at the intervals speci-
fied in the periodic maintenance and lu-
brication chart.
EAU23193
Checking and lubricating the
centerstandThe operation of the centerstand
should be checked before each ride,
and the pivots and metal-to-metal con-
tact surfaces should be lubricated if
necessary.
WARNING
EWA11302
If the centerstand does not move up
and down smoothly, have a Yamaha
dealer check or repair it. Otherwise,
the centerstand could contact the
ground and distract the operator, re-sulting in a possible loss of control.1. Centerstand
1
U52SE1E0 24 ページ ２０１５年９月１６日　水曜日　午後５時２７分

Periodic maintenance and adjustment
6-25
1
2
3
4
56
7
8
9
10
11
12
EAU23273
Checking the front forkThe condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main-
tenance and lubrication chart.
To check the condition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation 1. Place the vehicle on a level sur- face and hold it in an upright posi-
tion. WARNING! To avoid injury,
securely support the vehicle so
there is no danger of it falling
over.
[EWA10752]
2. While applying the front brake, push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
NOTICE
ECA10591
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-pair it.
Recommended lubricant:Lithium-soap-based grease
U52SE1E0 25 ページ ２０１５年９月１６日　水曜日　午後５時２７分