check engine YAMAHA XENTER 125 2012 User Guide

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EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENTNO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi)6000 km
(3500 mi)
12000 km
(7000 mi)18000 km
(10500 mi)24000 km
(14000 mi)
12 *Front brake lever pivot
shaft• Lubricate with lithium-soap-based grease.
√√√√ √
13 *Rear brake lever pivot-
ing points• Lubricate with silicone grease.
√√√√ √
14 Centerstand• Check operation.
• Lubricate.√√√√ √
15 * Front fork• Check operation and for oil leakage.
√√√√
16 *Shock absorber assem-
bly• Check operation and shock absorber for oil leakage.
√√√√
17 Engine oil• Change. (See page 6-10.)
√When the oil change indicator comes on
[5000 km (3000 mi) after the initial 1000
km (600 mi) and every 6000 km (3500 mi)
thereafter]
• Check oil level and vehicle for oil leakage. Every 3000 km (1800 mi)
√
18 Engine oil strainer• Clean.
√5000 km (3000 mi) after the initial 1000 km
(600 mi) and every 6000 km (3500 mi)
thereafter
19 * Cooling system• Check coolant level and vehicle for coolant leakage.
√√√√ √
• Change with ethylene glycol anti-freeze coolant. Every 3 years
20 Final transmission oil• Check vehicle for oil leakage.
√√ √
• Change.
√√√
21 * V-belt• Replace.When the V-belt replacement indicator comes on [ev-
ery 20000 km (12500 mi)]
22 *Front and rear brake
switches• Check operation.
√√√√√ √
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EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
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1. Spark plug wrenchTo check the spark plug
1. Check that the porcelain insula-
tor 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
different color, the engine could be
operating improperly. Do not attempt
to diagnose such problems yourself.
Instead, have a Yamaha dealer check
the vehicle.
2. Check the spark plug for elec-trode erosion and excessive
carbon or other deposits, and re-
place it if necessary.
Speci ed spark plug:
CPR9EA-9 (NGK)To install the spark plug
1. Measure the spark plug gap with
a wire thickness gauge and, if
necessary, adjust the gap to
specifi cation.Spark plug gap:
0.8 ~ 0.9 mm (0.031 ~ 0.035 in)2. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then
tighten it to the specifi ed torque.Tightening torque:
Spark plug:
13 Nm (1.3 m·kgf, 9.4 ft·lbf)
EAUT1835
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 pe-
riodic maintenance and lubrication
chart. In addition, the condition of the
spark plug can reveal 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 included in the owner’s
tool kit.
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EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
EAUT3700
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 speci-
fied 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.
231
1. Oil fi ller cap
2. Maximum level mark
3. Minimum level mark
3. Wait a few minutes until the oil
settles, remove the oil filler cap,
wipe the dipstick clean, insert it
back into the oil fi ller hole (without
screwing it in), and then remove it
again to check the oil level.TIPThe engine oil should be between the
minimum and maximum level marks.
4. If the engine oil is below the mini-
mum level mark, add suffi cient oil
of the recommended type to raise
it to the correct level.
5. Insert the dipstick into the oil fi ller
hole, and then tighten the oil fi ller
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
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 fi nger tight. However, the
spark plug should be tightened to the
specifi ed torque as soon as possible.
4. Install the spark plug cap.
5. Install the panel.
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EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
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1. Engine oil drain bolt B4. 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, compres-
sion spring, O-ring and engine oil
drain bolt B.TIPMake sure that the O-ring is properly
seated.
7. Install engine oil drain bolt A, and
then tighten both drain bolts to
their specifi ed torques.
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)8. Refill with the specified amount
of the recommended engine oil,
and then install and tighten the oil
fi ller cap.Recommended engine oil:
See page 8-1.
Oil change quantity:
1.10 L (1.16 US qt, 0.97 Imp.qt)
ECA11670
NOTICE● Do not use oils with a diesel
speci cation of “CD” or oils of
a higher quality than speci ed.
In addition, do not use oils la-
beled “ENERGY CONSERVING
II” or higher.● Be sure no foreign material en-
ters the crankcase. 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.
[ECAT1021]
1
1. Oil fi ller cap
1
1. Engine oil drain bolt A
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6-12
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
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1. Final transmission oil fi ller cap4. Remove the fi nal transmission oil
filler cap and its O-ring from the
fi nal transmission case.
5. Remove the fi nal transmission oil
drain bolt and its gasket to drain
the oil from the fi nal transmission
case.
EAU20065
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 fi nal 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 fi -
nal 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.
9. Start the engine, and then let
it idle for several minutes while
checking it for oil leakage. If oil is
leaking, immediately turn the en-
gine 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 tripmeterTIPThe oil change indicator and oil
change tripmeter can be reset when
“OIL CHANGE” and “OIL TRIP” ap-
pear in the multi-function display. (see
page 3-3.)
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6-13
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
Recommended final transmission
oil:
See page 8-1.
Oil quantity:
0.2 L (0.21 US qt, 0.18 Imp.qt)8. Install the final transmission oil
fi ller cap and its new O-ring, and
then tighten the oil fi ller cap.
9. Check the fi nal transmission case
for oil leakage. If oil is leaking,
check for the cause.
EAU20070
CoolantThe coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specifi ed in the periodic maintenance
and lubrication chart.
EAUT3690
To check the coolant level
The coolant level should be checked
as follows before each ride. In addi-
tion, the coolant must be changed at
the intervals specified in the periodic
maintenance 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 tem-
perature.● Make sure that the vehicle is po-
sitioned straight up when check-
ing the coolant level. A slight tilt
to the side can result in a false
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1. Final transmission oil drain bolt6. Install the final transmission oil
drain bolt and its new gasket, and
then tighten the bolt to the speci-
fi ed torque.Tightening torque:
Final transmission oil drain bolt:
20 Nm (2.0 m·kgf, 14.5 ft·lbf)7. Refi ll with the specifi ed amount of
the recommended fi nal 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.
[EWA11311]
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6-14
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
engine is hot.
[EWA15161]
5. Add coolant or distilled water to
raise the coolant to the maximum
level mark, and install the cool-
ant reservoir cap.
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, re-
place it with coolant as soon as
possible, otherwise the cooling
system will not be protected
against frost and corrosion. If
water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content
of the coolant as soon as pos-
sible, otherwise the effective-
ness of the coolant will be
reduced.
[ECA10472]
Coolant reservoir capacity:
0.25 L (0.26 US qt, 0.22 Imp.qt)
6. Close the seat.
EAU33031
Changing the coolant
The coolant must be changed at the
intervals specified in the periodic
maintenance and lubrication chart.
Have a Yamaha dealer change the
coolant. WARNING! Never attempt
to remove the radiator cap when
the engine is hot.
[EWA10381]
reading.
2. Open the seat. (See page 3-11.)
3. Check the coolant level in the
coolant reservoir.
12
1. Maximum level mark
2. Minimum level markTIPThe coolant should be between the
minimum and maximum level marks.
4. If the coolant is at or below the
minimum level mark, remove
the reservoir cap. WARNING!
Remove only the coolant res-
ervoir cap. Never attempt to re-
move the radiator cap when the
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6-15
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
1. Place the scooter on the center-
stand.
2. Remove the screw cover and air
fi lter case cover by removing the
screws.
3. Pull the air fi lter element out.
4. Insert a new air fi lter element into
the air fi lter 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 exces-
sively worn.
[ECA10481]
5. Install the air filter case cover
by installing the screws and the
screw cover.
Cleaning the air lter check hose
1. Check the hose on the rear side
of the air filter case for accumu-
lated 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
element
1. Remove panel B. (See page 6-8.)
2. Remove the V-belt air filter case
cover by removing the bolts.
1
1. V-belt air fi lter case cover3. Pull the air fi lter element out, and
then clean it with compressed air.
NOTICE:
To avoid damaging
the air filter element, handle
it gently and carefully, and do
not twist it.[ECA10521] EAUT3550
Air filter and V-belt case air
lter elementsThe air filter and V-belt case air fil-
ter elements should be cleaned or
replaced at the intervals specified in
the periodic maintenance and lubrica-
tion chart. Check both filter elements
more frequently 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 lter element
2
3
1
1. Screw cover
2. Air fi lter case cover
3. Air fi lter check hose
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EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
EAU21384
Checking the throttle grip
free play
1
1. Throttle cable free playThe throttle grip free play should mea-
sure 3 ~ 5 mm (0.12 ~ 0.20 in) at the
inner edge of the throttle grip. Periodi-
cally check the throttle grip free play
and, if necessary, have a Yamaha
dealer adjust it.
EAU44734
Checking the engine idling
speedCheck the engine idling speed and,
if necessary, have it corrected by a
Yamaha dealer.Engine idling speed:
1600 ~ 1800 r/min
1
1. V-belt case air fi lter element4. Insert the element into the air fi l-
ter case.
5. Install the V-belt air filter case
cover by installing the bolts.
6. Install the panel.
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EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
proved for this model.
Tire air pressure (measured on cold
tires):
Up to 90 kg (198 lb):
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,
cargo and accessories
EWA10511
WARNING
Never overload your vehicle. Op-
eration of an overloaded vehicle
could cause an accident.
EAUT2142
TiresTo maximize the performance, dura-
bility, and safe operation of your ve-
hicle, note the following points regard-
ing the specifi ed tires.
Tire air pressure
The tire air pressure should be
checked and, if necessary, adjusted
before each ride.
EWA10503
WARNING
Operation of this vehicle with im-
proper tire pressure may cause
severe injury or death from loss of
control.● The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the tempera-
ture of the tires equals the am-
bient temperature).● The tire air pressure must be
adjusted in accordance with
the riding speed and with the
total weight of rider, passen-
ger, cargo, and accessories ap-
EAU21401
Valve clearanceThe valve clearance changes with
use, resulting in improper air-fuel mix-
ture and/or engine noise. To prevent
this from occurring, the valve clear-
ance must be adjusted by a Yamaha
dealer at the intervals specifi ed in the
periodic maintenance and lubrication
chart.
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