check engine YAMAHA XCITY 125 2012 User Guide

OPERATION AND IMPORTANT RIDING POINTS
5-4
5
EAU16820
Tips for reducing fuel con-
sumption Fuel consumption depends largely on
your riding style. Consider the following
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 traffic
lights or at railroad crossings).
EAU16830
Engine break-in There is never a more important period
in the life of your engine than the period
between 0 and 1000 km (600 mi). For
this reason, you should read the follow-
ing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1000 km (600 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.
EAUM2281
0–500 km (0–300 mi)
Avoid prolonged operation above 1/3
throttle.
500–1000 km (300–600 mi)
Avoid prolonged operation above 1/2
throttle. NOTICE: After 1000 km (600
mi) of operation, the engine oil and
final transmission oil must be
changed, and the engine oil filter el-
ement replaced.
[ECAM1091]
1000 km (600 mi) and beyond
The vehicle can now be operated nor-
mally.NOTICE
ECA10270
If any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the vehicle.
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-3
6
EAU46871
TIP●
The annual checks must be performed every year, except if a kilometer-based maintenance, or for the UK, a
mileage-based maintenance, is performed instead.
●
From 30000 km (17500 mi), repeat the maintenance intervals starting from 6000 km (3500 mi).
●
Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical
skills.
EAU46920
Periodic maintenance chart for the emission control system NO. 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)
1*Fuel line Check fuel hoses for cracks or
damage.√√√√√
2 Spark plug Check condition.
Clean and regap.√√
Replace.√√
3*Valves Check valve clearance.
Adjust.√√√√
4*Fuel injection Check engine idle speed.√√√√√√
5*Muffler and exhaust
pipe Check the screw clamp(s) for
looseness.√√√√√
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-5
6
9*Steering bearings Check bearing play and steering
for roughness.√√√√√
Lubricate with lithium-soap-based
grease.Every 24000 km (14000 mi)
10*Chassis fasteners Make sure that all nuts, bolts and
screws are properly tightened.√√√√√
11Front brake lever
pivot shaft Lubricate with silicone grease.√√√√√
12Rear brake lever
pivot shaft Lubricate with silicone grease.√√√√√
13Sidestand, center-
stand Check operation.
Lubricate with lithium-soap-based
grease.√√√√√
14*Sidestand switch Check operation.√√√√√√
15*Front fork Check operation and for oil leak-
age.√√√√
16*Shock absorber as-
semblies Check operation and shock ab-
sorbers for oil leakage.√√√√
17 Engine oil Change. (See page 3-3.)√When the oil change indicator light 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)√
18Engine oil filter ele-
ment Replace.√√√ NO. 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)
U16PE3E0.book Page 5 Tuesday, June 19, 2012 5:17 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-9
6To install the cowling
1. Connect the headlight coupler and
the turn signal couplers.
2. Place the cowling in the original
position, and then install the
screws.
EAU19482
Panel A
To remove the panel1. Open the seat. (See page 3-12.)
2. Remove the screws, and then pull
the panel off as shown.
To install the panelPlace the panel in the original position,
and then install the screws.
EAU19210
Panel B
To remove the panelRemove the screws, and then take the
panel off.
To install the panelPlace the panel in the original position,
and then install the screws.
EAU19622
Checking the spark plug The spark plug is an important engine
component, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode, it
should be removed and checked in ac-
cordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of the spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally). If
the spark plug shows a distinctly differ-
ent color, the engine could be operating
improperly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If the spark plug shows signs of elec-
trode erosion and excessive carbon or
other deposits, it should be replaced.
1. Screw
2. Panel AZAUM0656
1
2
1. ScrewZAUM0657
1
Specified spark plug:
NGK/CPR9EA-9
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-10
6 Before installing a spark plug, the spark
plug gap should be measured with a
wire thickness gauge and, if necessary,
adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
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.
EAUM2271
Engine oil The engine oil level should be checked
before each ride. In addition, the oil
must be changed at the intervals spec-
ified in the periodic maintenance and
lubrication chart and when the service
indicator light comes on.
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 the
minimum and maximum level marks.
1. Spark plug gapSpark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.0 ft·lbf)
1
ZAUM0037
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-11
64. 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 (with or
without oil filter element replace-
ment)
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 bolt to
drain the oil from the crankcase.
4. Check the drain bolt washer for
damage and replace it if neces-
sary.
TIPSkip steps 5–9 if the oil filter element is
not being replaced.5. Remove the oil filter element cover
by removing the bolts.
6. Remove the oil filter element and
O-ring.
1. Engine oil filler capZAUM0701
1
1. Engine oil drain bolt
1. Engine oil drain bolt
2. WasherZAUM0702
112
ZAUM0129
1. Oil filter element coverZAUM0711
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-12
6 7. Check the O-ring for damage and
replace it if necessary.
8. Install the new oil filter element and
an O-ring.
9. Install the oil filter element cover by
installing the bolts, then tightening
them to the specified torque.
TIPMake sure that the O-ring is properly
seated.
10. Install the washer and the engine
oil drain bolt, and then tighten the
drain bolt to the specified torque.TIPMake sure that the washer is properly
seated.11. Refill with the specified amount of
the recommended engine oil, and
then install and tighten the oil filler
cap.TIPBe sure to wipe off spilled oil on any
parts after the engine and exhaust sys-
tem have cooled down.
NOTICE
ECA11670
●
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.
12. 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.
13. Turn the engine off, and then
check the oil level and correct it if
necessary.
14. Reset the oil change indicator.
(See page 3-8.)
1. Oil filter element
2. O-ring
3. Oil filter element coverTightening torque:
Oil filter cover bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)1
2
3
ZAUM0712
Tightening torque:
Engine oil drain bolt:
20 Nm (2.0 m·kgf, 14 ft·lbf)
Recommended engine oil:
See page 8-1.
Oil change quantity:
Without oil filter element replace-
ment:
1.40 L (1.48 US qt, 1.23 Imp.qt)
With oil filter element replacement:
1.50 L (1.59 US qt, 1.32 Imp.qt)
U16PE3E0.book Page 12 Tuesday, June 19, 2012 5:17 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-13
6
EAU20066
Final transmission oil The 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.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.
[EWA11311]
8. Install the final transmission 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.
1. Final transmission oil filler cap
1. Final transmission oil drain bolt
1
ZAUM0658 ZAUM0703
1
Tightening torque:
Final transmission oil drain bolt:
20 Nm (2.0 m·kgf, 14 ft·lbf)
Recommended final transmission
oil:
See page 8-1.
Oil quantity:
0.21 L (0.22 US qt, 0.18 Imp.qt)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-14
6
EAU20070
Coolant The 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.
EAUM2102
To check the coolant level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.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 the
side can result in a false reading.
2. Check the coolant level through
the check window.TIPThe coolant should be between the
minimum and maximum level marks.
3. If the coolant is at or below the
minimum level mark, remove the
cowling A. (See page 6-8.)
4. Open the reservoir cap, and then
add coolant to the maximum level
mark. WARNING! Remove only
the coolant reservoir cap. Never
attempt to remove the radiator
cap when the engine is hot.
[EWA15161]
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 not
be 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.
[ECA10472]
5. Close the reservoir cap, and then
install the cowling.
1. Maximum level mark
2. Minimum level mark
1
2
ZAUM0660
1. Coolant reservoir cap
Coolant reservoir capacity:
0.20 L (0.21 US qt, 0.18 Imp.qt)
1
ZAUM0661
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-16
6 2. Remove the air filter element, and
then blow out the dirt with com-
pressed air as shown.
3. Check the air filter element for
damage and replace it if neces-
sary.4. Install the air filter element with the
colored side facing outward.
5. Install the V-belt case air filter cov-
ers by installing the screws.
NOTICE: Make sure that each fil-
ter element is properly seated in
its case. The engine should nev-
er be operated without the filter
elements installed, otherwise
the piston(s) and/or cylinder(s)
may become excessively worn.
[ECA10531]EAU21384
Checking the throttle grip free
play The throttle grip free play should mea-
sure 3.0–5.0 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 deal-
er adjust it.
1. Screw
2. V-belt case air filter cover
1. V-belt case air filter element
1
2
ZAUM0705
1
ZAUM0706
1. Throttle grip free play1ZAUM0051
U16PE3E0.book Page 16 Tuesday, June 19, 2012 5:17 PM