maintenance YAMAHA XENTER 150 2016 User Guide

Periodic maintenance and adjustment
6-7
1
2
3
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56
7
8
9
10
11
12
EAUT2711
TIP
Air filter and V-belt filter
This model’s air filter is equipped wi th a disposable oil-coated paper elemen t, which must not be cleaned with com-
pressed air to avoid damaging it.
The air filter element needs to be replaced and V-belt filter needs to be serviced more frequently when riding in un- usually wet or dusty areas.

Hydraulic brake service
After disassembling the brake master cylinder and caliper , always change the fluid. Regularly check the brake fluid
level and fill the reservoir as required.
Every two years replace the internal components of the brake master cylinder and caliper, and change the brake fluid. Replace the brake hose every four years and if cracked or damaged.
24 * Throttle grip Check operation.
Check throttle grip free play, and
adjust if necessary.
Lubricate cable and grip housing. 
25 *Lights, signals and
switches Check operation.
Adjust headlight beam.

NO. ITEM CHECK OR MAINTENANCE JOB
ODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi) 6000 km
(3500 mi) 12000 km
(7000 mi) 18000 km
(10500 mi) 24000 km
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Periodic maintenance and adjustment
6-8
1
2
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567
8
9
10
11
12
EAU18724
Removing and installing the
cowling and panelsThe cowling and panels shown need to
be removed to perform some of the
maintenance jobs described in this
chapter. Refer to this section each time
the cowling or a panel needs to be re-
moved and installed.
EAUT3561
Cowling A
To remove the cowling1. Remove the cowling screws and bolts.
2. Disconnect the coupler shown, and then take the cowling off. To install the cowling
1. Connect the coupler.
2. Place the cowling in the original
position.
3. Install the cowling screws and bolts.
1. Cowling A
2. Panel A
3. Panel B
4. Panel C
1
2
3
4
1. Cowling A
1
1. Coupler
1
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Periodic maintenance and adjustment
6-9
1
2
3
4
56
7
8
9
10
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12
EAUT4881
Panel A
To remove the panel1. Remove the luggage holder by re- moving the screws.
2. Remove the screws, and then pull the panel outward.
To install the panel1. Place the panel in the original posi- tion, and then install the screws.
2. Install the luggage holder by in- stalling the screws, and then tight-
en the screws to the specified
torque. Panel B
To remove the panel
Remove the screws and quick fastener,
and then take the panel off.
To install the panelPlace the panel in the original position,
and then install the quick fastener and
screws. Panel C
To remove the panel
1. Open the seat. (See page 3-11.)
2. Remove the screw, and then pull
the panel off as shown.
1. Luggage holder
2. Panel A
2
1
Tightening torque:luggage holder screws: 7 Nm (0.7 m·kgf, 5.1 ft·lbf)1. Panel B
2. Quick fastener
1
2
1. Panel C
1
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Periodic maintenance and adjustment6-10
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To install the panel
1. Insert the projections on the panel
into the slots as shown, and then
install the screws.
2. Close the seat.
EAUT1837
Checking the spark plugThe spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plug should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug 1. Place the vehicle on the center- stand.
2. Remove panel C. (See page 6-8.)
3. Remove the spark plug cap.
4. Remove the spark plug as shown, with the spark plug wrench includ-
ed in the owner’s tool kit. To check the spark plug
1. Check that the porcelain insulator around the center electrode of the
spark plug is a medium-to-light tan
(the ideal color when the vehicle is
ridden normally).
TIPIf the spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, have a Yamaha dealer checkthe vehicle.
2. Check the spark plug for electrode erosion and excessive carbon or
other deposits, and replace it if
1. Projection
1
1. Spark plug wrench
1
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Periodic maintenance and adjustment
6-11
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2
3
4
56
7
8
9
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11
12 necessary.
3. Measure the spark plug gap with a wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
To install the spark plug 1. Clean the surface of the spark plug gasket and its mating surface, and
then wipe off any grime from the
spark plug threads.
2. Install the spark plug with the spark plug wrench, and then tight-
en it to the specified torque.
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 speci-
fied torque as soon as possible.
3. Install the spark plug cap.
4. Install the panel.
EAUT3703
Engine oil and oil strainerThe engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil strainer
cleaned at the intervals specified in the
periodic maintenance and lubrication
chart.
To check the engine oil level
1. Place the scooter on the center- stand. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for several minutes, and then turn it
off.
3. Wait a few minutes until the oil set- tles, remove the oil filler cap, wipe
the dipstick clean, insert it back
into the oil filler hole (without
screwing it in), and then remove it
again to check the oil level.TIPThe engine oil should be between theminimum and maximum level marks.
Specified spark plug:NGK / CPR9EA-9
Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)
Tightening torque: Spark plug: 13 Nm (1.3 m·kgf, 9.4 ft·lbf)
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Periodic maintenance and adjustment6-12
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567
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12
4. If the engine oil is below the mini-
mum level mark, add sufficient oil
of the recommended type to raise
it to the correct level.
5. Insert the dipstick into the oil filler hole, and then tighten the oil filler
cap.
To change the engine oil and clean
the oil strainer 1. Start the engine, warm it up for several minutes, and then turn it
off.
2. Place an oil pan under the engine to collect the used oil. 3. Remove the engine oil filler cap
and the engine oil drain bolts A
and B to drain the oil from the
crankcase. NOTICE: When re-
moving the engine oil drain bolt
B, the O-ring, compression
spring, and oil strainer will fall
out. Take care not to lose these
parts.
[ECAT1022]
4. Clean the oil strainer with solvent, and then check it for damage and
replace it if necessary.
5. Check the O-ring for damage and replace it if necessary.
6. Install the oil strainer, compression
1. Oil filler cap
2. Maximum level mark
3. Minimum level mark
23 1
1. Oil filler cap
1
1. Engine oil drain bolt A
1. Engine oil drain bolt B
1
1
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Periodic maintenance and adjustment
6-13
1
2
3
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56
7
8
9
10
11
12 spring, O-ring and engine oil drain
bolt B.
TIPMake sure that the O-ring is properlyseated.
7. Install engine oil drain bolt A, and then tighten both drain bolts to
their specified torques.
8. Refill with the specified amount of the recommended engine oil, and
then install and tighten the oil filler
cap.NOTICE
ECA11671

Do not use oils with a diesel
specification of “CD” or oils of a
higher quality than specified. In addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.

Be sure no foreign material en-ters the crankcase.
9. Start the engine, and then let it idle for several minutes while checking
it for oil leakage. If oil is leaking, im-
mediately turn the engine off and
check for the cause.
10. Turn the engine off, and then check the oil level and correct it if
necessary.
To reset the oil change indicator
and oil change tripmeter
TIPThe oil change indicator and oil change
tripmeter can be reset when "OIL
CHANGE" and "OIL TRIP" appear in
the multi-function display. (Seepage 3-3.)
EAU20067
Final transmission oilThe final transmission case must be
checked for oil leakage before each
ride. If any leakage is found, have a
Yamaha dealer check and repair the
scooter. In addition, the final transmis-
sion oil must be changed as follows at
the intervals specified in the periodic
maintenance and lubrication chart. 1. Start the engine, warm up the final transmission oil by riding the
scooter for several minutes, and
then stop the engine.
2. Place the scooter on the center- stand.
3. Place an oil pan under the final transmission case to collect the
used oil.
4. Remove the final transmission oil filler cap and its O-ring from the fi-
nal transmission case.
Tightening torque:Engine oil drain bolt A: 20 Nm (2.0 m·kgf, 14.5 ft·lbf)
Engine oil drain bolt B:
32 Nm (3.2 m·kgf, 23.1 ft·lbf)
Recommended engine oil: See page 8-1.
Oil change quantity:
1.10 L (1.16 US qt, 0.97 Imp.qt)
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Periodic maintenance and adjustment6-14
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4
567
8
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12
5. Remove the final transmission oil
drain bolt and its gasket to drain
the oil from the final transmission
case.
6. Install the final transmission oil drain bolt and its new gasket, and then tighten the bolt to the speci-
fied torque.
7. Refill with the specified amount of the recommended final transmis-
sion oil. WARNING! Make sure
that no foreign material enters
the final transmission case.
Make sure that no oil gets on the
tire or wheel.
[EWA11312]
8. Install the final tr ansmission oil fill-
er cap and its new O-ring, and then
tighten the oil filler cap.
9. Check the final transmission case for oil leakage. If oil is leaking,
check for the cause.
EAU20071
CoolantThe coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAUT3693
To check the coolant level
The coolant level should be checked as
follows before each ride. In addition,
the coolant must be changed at the in-
tervals specified in the periodic mainte-
nance and lubrication chart.1. Place the vehicle on the center- stand.TIP
The coolant level must be checked
on a cold engine since the level
varies with engine temperature.

Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to theside can result in a false reading.
2. Open the seat. (See page 3-11.)
3. Check the coolant level in the cool- ant reservoir.
1. Final transmission oil filler cap
1. Final transmission oil drain bolt
1
1
Tightening torque:Final transmission oil drain bolt:20 Nm (2.0 m·kgf, 14.5 ft·lbf)
Recommended final transmission
oil: See page 8-1.
Oil quantity:
0.20 L (0.21 US qt, 0.18 Imp.qt)
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Periodic maintenance and adjustment
6-15
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56
7
8
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12
TIPThe coolant should be between theminimum and maximum level marks.
4. If the coolant is at or below the minimum level mark, remove the
reservoir cap. (See page 3-11.)
WARNING! Remove only the
coolant reservoir cap. Never at-
tempt to remove the radiator
cap when the engine is
hot.
[EWA15162]
5. Add coolant or distilled water toraise the coolant to the maximum
level mark, and install the coolant
reservoir cap and the panel.
NOTICE: If coolant is not avail- able, 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 cool-
ant, replace it with coolant as
soon as possible, otherwise the
cooling system will not be pro-
tected against frost and corro-
sion. If water has been added to
the coolant, have a Yamaha
dealer check the antifreeze con-
tent of the coolant as soon as
possible, otherwise the effec-
tiveness of the coolant will be
reduced.
[ECA10473]
6. Close the seat.
EAU33032
Changing 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. Maximum level mark
2. Minimum level mark
12
Coolant reservoir capacity:
0.25 L (0.26 US qt, 0.22 Imp.qt)
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Periodic maintenance and adjustment6-16
1
2
3
4
567
8
9
10
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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
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