2012 YAMAHA XMAX 125 check engine

EAU15303
Sidestand
1. Sidestand switch
The sidestand is located on the left
side of the frame. Raise the sidestand
or lower it with your foot while holding
the vehicle upright.
TIP
The built-in sidestand switch is part of
the ignition circuit cut-off system,
which cuts the ignition in certain
situations. (See page 3-22 for an
explanation of the ignition circuit cut-
off system.)
EWA10240
The vehicle must not be ridden with
the sidestand down, or if the sides-
tand cannot be properly moved up
(or does not stay up), otherwise the
sidestand could contact the ground
and distract the operator, resulting
in a possible loss of control. Yama-
ha’s ignition circuit cut-off system
has been designed to assist the
operator in fulfilling the responsibi-
lity of raising the sidestand before
starting off. Therefore, check this
system regularly as described
below and have a Yamaha dealer
repair it if it does not function pro-
perly.
EAU45051
Ignition circuit cut-off
system
The ignition circuit cut-off system
(comprising the sidestand switch and
brake light switches) has the following
functions.
It prevents starting when the
sidestand is up, but neither brake
is applied.
It prevents starting when either
brake is applied, but the sides-
tand is still down.
It cuts the running engine when
the sidestand is moved down.
Periodically check the operation of
the ignition circuit cut-off system
according to the following procedure.
WARNING
ZAUM0648
1
INSTRUMENT AND CONTROL FUNCTIONS
3-22
3

With the engine turned off:
1. Move the sidestand down.
2. Make sure that the engine stop switch is turned on.
3. Turn the key on.
4. Keep the front or rear brake applied.
5. Push the start switch.
Does the engine start?
With the engine still off:
6. Move the sidestand up.
7. Keep the front or rear brake applied.
8. Push the start switch.
Does the engine start?
With the engine still running:
9. Move the sidestand down.
Does the engine stall?
The system is OK. The scooter can be ridden.The sidestand switch may not be working correctly.
The scooter should not be ridden until
checked by a Yamaha dealer.
The brake switch may not be working correctly.
The scooter should not be ridden until
checked by a Yamaha dealer.
The sidestand switch may not be working correctly.
The scooter should not be ridden until
checked by a Yamaha dealer.
YES NO YES NO NO YES
If a malfunction is noted, have a Yamaha
dealer check the system before riding.
WARNING
INSTRUMENT AND CONTROL FUNCTIONS
3-23
3

FOR YOUR SAFETY – PRE-OPERATION CHECKS
4-1
4
EAU15596
Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always follow the ins-
pection and maintenance procedures and schedules described in the Owner’s Manual.
EWA11151
Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment dama-
ge. Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures pro-
vided in this manual, have the vehicle inspected by a Yamaha dealer.
Before using this vehicle, check the following points:
WARNING
ITEM CHECKS PAGE

Fuel3-15


Engine oil 6-10

Final transmission oil 6-13

Coolant 6-14




Front brake 6-20, 6-21, 6-22

ECA15022
If a warning light, indicator light or
indicator does not go off, see pages
3-4 or 3-6 for the corresponding war-
ning light, indicator light or indicator
circuit check.
2. Close the throttle completely.
3. Start the engine by pushing the
start switch while applying the
front or rear brake. NOTICE: For
maximum engine life, never
accelerate hard when the engi-
ne is cold!
[ECA11041]
1. Rear brake lever
2. Front brake lever
3. Start switch
3. If the engine does not start, rele-
ase the start switch, wait a few
seconds, and then try again.
Each starting attempt should be
as short as possible to preserve
the battery. Do not crank the
engine more than 10 seconds on
any one attempt.EAU45091
Starting off
1. While pulling the rear brake lever
with your left hand and holding
the grab bar with your right hand,
push the scooter off the centers-
tand.
1. Grab bar
1. Grab bar
NOTICE
OPERATION AND IMPORTANT RIDING POINTS
5-2
5
4.

1000 km (600 mi) and beyond
The vehicle can now be operated
normally.
ECA10310
Keep the engine speed out of
the tachometer red zone.
If any engine trouble should
occur during the engine break-
in period, immediately have a
Yamaha dealer check the vehi-
cle.
EAU17213
Parking
When parking, stop the engine, and
then remove the key from the main
switch.
EWA10311
Since the engine and exhaust
system can become very hot,
park in a place where pedes-
trians or children are not likely
to touch them and be burned.
Do not park on a slope or on
soft ground, otherwise the
vehicle may overturn, increa-
sing the risk of a fuel leak and
fire.
Do not park near grass or other
flammable materials which
might catch fire.
WARNING
NOTICE
OPERATION AND IMPORTANT RIDING POINTS
5-5
5

PERIODIC MAINTENANCE AND ADJUSTMENT
6-5
6
ODOMETER READING
NO. ITEM CHECK OR MAINTENANCE JOBANNUAL
1000 km 6000 km 12000 km 18000 km 24000 kmCHECK
(600 mi) (3500 mi) (7000 mi) (10500 mi) (14000 mi)

9*Steering bearingsfor roughness.33 3 3 3

based grease.Every 24000 km (14000 mi)
10 *Chassis fasteners
screws are properly tightened.333 33
11Front brake lever
pivot shaft333 33
12Rear brake lever
pivot shaft333 33
Sidestand,
13 333 33
centerstand
based grease.
14 *Sidestand switch33 3 3 3 3
15 *Front fork
leakage.333 3
16 *Shock absorber
assembliesabsorbers for oil leakage.333 3
When the oil change indicator flashes [5000 km (3000 mi)
3after the initial 1000 km (600 mi) and every 6000 km
17Engine oiland 6-10.)
(3500 mi) thereafter]

leakage.Every 3000 km (1800 mi)3
18Engine oil filter
element33 3

PERIODIC MAINTENANCE AND ADJUSTMENT
6-7
6
EAU38262
TIP
Engine air filter and V-belt air filter
This model’s engine air filter is equipped with a disposable oil-coated paper element, which must not be cleaned
with compressed air to avoid damaging it.
The engine air filter element needs to be replaced and the V-belt air filter element needs to be serviced more fre-
quently when riding in unusually wet or dusty areas.
Hydraulic brake service
After disassembling the brake master cylinders and calipers, always change the fluid. Regularly check the brake
fluid levels and fill the reservoirs as required.
Every two years replace the internal components of the brake master cylinders and calipers, and change the bra-
ke fluid.
Replace the brake hoses every four years and if cracked or damaged.

For the Sport version, the backrest is
not shown for better understanding.
To install the panel
1. Place the panel in the original
position, and then install the
screws.
2. Close the seat.
EAU19622
Checking the spark plug
The spark plug is an important engine
component, which should be chec-
ked periodically, preferably by a
Yamaha dealer. Since heat and depo-
sits will cause any spark plug to
slowly erode, it should be removed
and checked in accordance with the
periodic maintenance and lubrication
chart. In addition, the condition of the
spark plug can reveal the condition of
the engine.
The porcelain insulator around the
center 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 different 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 repla-
ced.Before installing a spark plug, the
spark plug gap should be measured
with a wire thickness gauge and, if
necessary, adjusted to specification.
1. Spark plug gap
Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the
spark plug threads.
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
1
ZAUM0037
Specified spark plug:
NGK/CPR9EA-9
PERIODIC MAINTENANCE AND ADJUSTMENT
6-9
6