YAMAHA XMAX 125 2008 Workshop Manual

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).
NOTE:
If 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 electro-
de erosion and excessive carbon
or other deposits, and replace it if
necessary.
To install the spark plug
1. Measure the spark plug gap with
a wire thickness gauge and, if
necessary, adjust the gap to spe-
cification.2. Clean the surface of the spark
plug gasket and its mating surfa-
ce, 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 specified torque.
NOTE:
If 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 specified torque as soon as pos-
sible.
4. Install the spark plug cap.
5. Install the cowling.
EAUM2270
Engine oil
The engine oil level should be chec-
ked before each ride. In addition, the
oil must be changed at the intervals
specified 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 centers-
tand.
NOTE:
Make sure that the scooter is positio-
ned straight up when checking the oil
level. 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.
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.0 ft·lbf)
Spark plug gap:
0.8-0.9 mm (0.031-0.035 in)
Specified spark plug:
NGK/ CPR 9EA-9
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1. Engine oil filler 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 filler hole (wit-
hout screwing it in), and then
remove it again to check the oil
level.
NOTE:
The engine oil should be between the
minimum and maximum level marks.
4. If the engine oil is below the mini-
mum level mark, add sufficient oil
of the recommended type to rai-
se 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
replacement)
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.1. Engine oil drain bolt
4. Check the drain bolt washer for
damage and replace it if neces-
sary.
1. Engine oil drain bolt
2. Washer
NOTE:
Skip steps 5 to 9 if the oil filter ele-
ment is not being replaced.
5. Remove the oil filter element
cover by removing the bolts.
1. Oil filter element cover
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6. Remove the oil filter element and
o-ring.
1. Oil filter element
2. O-ring
3. Oil filter element cover
7. Check the O-ring for domage
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 tigh-
tening them to the specified tor-
que.
NOTE:
Make 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.
NOTE:
Make sure that the washer is properly
seated.
11. Add the specified amount of the
recommended engine oil, and
then install and tighten the oil
filler cap.
NOTE:
Be sure to wipe off spilled oil on any
parts after the engine and exhaust
system have cooled down.
ECA11670
CAUTION:
●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 CONSER-
VING II” or higher.
●Be sure no foreign material
enters the crankcase.
12. Start the engine, and then let it
idle for several minutes while
checking it for oil leakage. If oil is
leaking, immediately turn the
engine off and check for the cau-
se.
13. Turn the engine off, and then
check the oil level and correct it if
necessary.
14. Reset the oil change indicator.
(See page 3-6.)
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)
Tightening torque:
Engine oil drain bolt:
32 Nm (3.2 m·kgf, 23 ft·lbf)
Tightening torque:
Oil filter cover bolt::
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
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EAU20061
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 trans-
mission 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 centers-
tand.
3. Place an oil pan under the final
transmission case to collect the
used oil.
4. Remove the oil filler cap and
drain bolt to drain the oil from the
final transmission case.
1. Final transmission oil filler cap
2. O-ring
5. Install the final transmission oil
drain bolt, and then tighten it to
the specified torque.
1. Final transmission oil drain bolt
6. Add the specified amount of the
recommended final transmission
oil, and then install and tighten
the oil filler cap.
EWA11310
s s
WARNING
●Make sure that no foreign
material enters the final trans-
mission case.
●Make sure that no oil gets on
the tire or wheel.
7. Check the final transmission case
for oil leakage. If oil is leaking,
check for the cause.
Recommended final transmission
oil:
See page 8-1.
Oil quantity:
0.21 L (0.22 US qt) (0.18 Imp.qt)
Tightening torque:
Final transmission oil drain bolt:
20 Nm (2.0 m·kgf, 14 ft·lbf)
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EAU20070
Coolant
The coolant level should be checked
before each ride. In addition, the coo-
lant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAUS1273
To check the coolant level
1. Place the vehicle on a level surfa-
ce and hold it in an upright posi-
tion.
NOTE:
●The coolant level must be chec-
ked on a cold engine since the
level varies with engine tempera-
ture.
●Make sure that the vehicle is
positioned 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.
NOTE:
The coolant should be between the
minimum and maximum level marks.
1. Maximum level mark
2. Minimum level mark
3. Coolant level window
3. If the coolant is at or below the
minimum level mark, remove the
right floorboard mat by pulling it
up.
4. Open the reservoir cap, and then
add coolant to the maximum
level mark.
1. Coolant reservoir cap
ECA10471
CAUTION:
●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 coo-
lant as soon as possible, other-
wise the cooling system will
not be protected against frost
and corrosion.
Coolant reservoir capacity:
0.26 L (0.27 US qt) (0.23 Imp.qt)
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●If water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content of
the coolant as soon as possi-
ble, otherwise the effective-
ness of the coolant will be
reduced.
EWA10380
s s
WARNING
Never attempt to remove the radia-
tor cap when the engine is hot.
5. Close the reservoir cap
6. Place the floorboard mat in the
original position and push it
downward to secure it.
EAU33030
Changing the coolantEWA10380
s s
WARNING
Never attempt to remove the radia-
tor cap when the engine is hot.
The coolant must be changed at the
intervals specified in the periodic
maintenance and lubrication chart.
Have a Yamaha dealer change the
coolant.
EAUM2241
Air filter and V-belt case air
filter elements
The air filter element should be repla-
ced and the V-belt case air filter ele-
ment should be cleaned at the inter-
vals specified in the periodic
maintenance and lubrication chart.
Service the air filter elements more
frequently if you are riding in unu-
sually wet or dusty areas.
Replacing the air filter element
1. Place the scooter on the centers-
tand.
2. Remove the air filter case cover
by removing the screws.
1. Air filter case cover
3. Pull the air filter element out.
1. Air filter element
4. Insert a new air filter element into
the air filter case.
5. Install the air filter case cover by
installing the screws.
Cleaning the V-belt case air filter
element
1. Remove the V-belt case air filter
covers by removing the screws.
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1. Screw
2. Cowling C
1. V-belt case air filter cover
2. Screw1. Screw
2. V-belt case air filter cover
2. Remove the air filter element, and
then blow out the dirt with com-
pressed air as shown.
1. V-belt case air filter element
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
covers by installing the screws.
ECA10530
CAUTION:
●Make sure that each filter ele-
ment is properly seated in its
case.
●The engine should never be
operated without the filter ele-
ments installed, otherwise the
piston(s) and/or cylinder(s)
may become excessively worn.
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EAUS1290
Adjusting the throttle cable
free play
1. Throttle cable free play
The throttle cable free play should
measure 3.0 -5.0 mm (0.12 -0.20 in) at
the throttle grip. Periodically check
the throttle cable free play and, if
necessary, adjust it as follows.
NOTE:
The engine idling speed must be
correctly adjusted before checking
and adjusting the throttle cable free
play.
1. Remove cowling A (See page
6-7).
2. Loosen the locknut.
1. Rubber cap
2. Locknut
3. Adjusting nut
3. To increase the throttle cable free
play, turn the adjusting nut in
direction (a). To decrease the
throttle cable free play, turn the
adjusting nut in direction (b).
4. Tighten the locknut.
5. Install the cowling.
EAU21401
Valve clearance
The valve clearance changes with
use, resulting in improper air-fuel mix-
ture and/or engine noise. To prevent
this from occurring, the valve clearan-
ce must be adjusted by a Yamaha
dealer at the intervals specified in the
periodic maintenance and lubrication
chart.
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EAU21871
Tires
To maximize the performance, durabi-
lity, and safe operation of your scoo-
ter, note the following points regar-
ding the specified tires.
Tire air pressure
The tire air pressure should be chec-
ked and, if necessary, adjusted befo-
re each ride.
EWA10500
s s
WARNING
●The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperatu-
re of the tires equals the
ambient temperature).
●The tire air pressure must be
adjusted in accordance with
the riding speed and with the
total weight of rider, passenger,
cargo, and accessories appro-
ved for this model.
EWA14660
s s
WARNING
Because loading has an enormous
impact on the handling, braking,
performance and safety characte-
ristics of your vehicle, you shouldkeep the following precautions in
mind.
●NEVER OVERLOAD THE VEHI-
CLE! Operation of an overloa-
ded vehicle may result in tire
damage, loss of control, or
severe injury. Make sure that
the total weight of rider, pas-
senger, cargo, and accessories
does not exceed the specified
maximum load for the vehicle.
●Do not carry along loosely pac-
ked items, which can shift
during a ride.
●Securely pack the heaviest
items close to the center of the
vehicle and distribute the
weight evenly on both sides.
●Adjust the suspension and tire
air pressure with regard to the
load.
●Check the tire condition and air
pressure before each ride.
Tire air pressure (measured on
cold tires):
Up to 90 kg (198 lb):
Front:
190 kPa (28 psi) (1.90 kgf/cm
2)
Rear:
220 kPa (32 psi) (2.20 kgf/cm
2)
90 kg (198 lb) to maximum load:
Front:
210 kPa (30 psi) (2.10 kgf/cm
2)
Rear:
250 kPa (36 psi) (2.50 kgf/cm
2)
Maximum load*:
189 kg (417 lb)
* Total weight of rider, passenger,
cargo and accessories
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Tire inspection
1. Tire tread depth
2. Tire sidewall
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 Yama-
ha dealer replace the tire immediately.
NOTE:
The tire tread depth limits may differ
from country to country. Always
comply with the local regulations.
Tire information
This scooter is equipped with tube-
less tires.
EWA10470
s s
WARNING
●Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the
vehicle with excessively worn
tires decreases riding stability
and can lead to loss of control.
●The replacement of all wheel
and brake related parts, inclu-
ding the tires, should be left to
a Yamaha dealer, who has the
necessary professional know-
ledge and experience.
Front tire:
Size:
120/70-15 M/C 56S(Michelin -
Continental)
120/70-15 M/C 56P(Pirelli)
Manufacturer/model:
Michelin/GoldStandard
Continental/ContiTwist TL
Pirelli/GTS23
Rear tire:
Size:
140/70-14 M/C 68S(Michelin -
Continental)
140/70-14 M/C 68P(Pirelli)
Manufacturer/model:
Michelin/GoldStandard
Continental/ContiTwist TL
Pirelli/GTS24
Minimum tire tread depth (front
and rear):
1.6 mm (0.06 in)
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