2008 YAMAHA MAJESTY 125 check engine

EAU16760
Starting off
1. Grab bar
NOTE:
Before starting off, allow the engine to
warm up.
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.
2. Sit astride the seat, and then
adjust the rear view mirrors.
3. Switch the turn signal on.
4. Check for oncoming traffic, and
then slowly turn the throttle grip
(on the right) in order to take off.
5. Switch the turn signal off.
EAU16780
Acceleration and
deceleration
The speed can be adjusted by ope-
ning and closing the throttle. To incre-
ase the speed, turn the throttle grip in
direction (a). To reduce the speed,
turn the throttle grip in direction (b).
EAU16791
Braking
1. Close the throttle completely.
2. Apply both front and rear brakes
simultaneously while gradually
increasing the pressure.
EWA10300
s s
WARNING
Avoid braking hard or suddenly
(especially when leaning over
to one side), otherwise the sco-
oter may skid or overturn.
Railroad crossings, streetcar
rails, iron plates on road cons-
truction sites, and manhole
covers become extremely slip-
pery when wet. Therefore, slow
down when approaching such
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OPERATION AND IMPORTANT RIDING POINTS
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150 ~ 500 km (90 ~ 300 mi)
Avoid prolonged operation above 1/2
throttle.
Rev the engine freely through the
gears, but do not use full throttle at
any time.
500 ~ 1000 km (300 ~ 600 mi)
Avoid prolonged operation above 3/4
throttle.
ECA10350
CAUTION:
After 1000 km (600 mi) of operation,
the engine oil must be changed and
the oil strainer cleaned.
1000 km (600 mi) and beyond
Avoid prolonged full-throttle opera-
tion. Vary the speed occasionally.
ECA10270
CAUTION:
If any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the vehicle.
EAU17200
Parking
When parking, stop the engine, and
then remove the key from the main
switch.
EWA10310
s s
WARNING
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.
Do not park on a slope or on
soft ground, otherwise the
vehicle may overturn.5
OPERATION AND IMPORTANT RIDING POINTS
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ODOMETER READING (x 1000 Km)
ANNUAL
NO. ITEM CHECK OR MAINTENANCE JOB
1 6 12 18 24CHECK
8*Rear brake• Check operation, fluid level and vehicle for fluid leakage.√√ √ √√ √• Replace brake pads. Whenever worn to the limit
9*Brake hoses• Check for cracks or damage.√√√√ √• Replace. Every 4 years
10 *Wheels• Check runout and for damage.√√√√
• Check tread depth and for damage.
11 *Tires• Replace if necessary.
√√√√ √
• Check air pressure.
• Correct if necessary.
12 *Wheel bearings• Check bearing for looseness or damage.√√√√
13 *Steering bearings• Check bearing play and steering for roughness.√√ √ √√• Lubricate with lithium-soap-based grease. Every 20000 km
14 *Chassis fasteners• Make sure that all nuts, bolts and screws are properly
tightened.√√√√ √
15Sidestand, centerstand• Check operation.
• Lubricate.√√√√ √
16 *Sidestand switch• Check operation.√√ √ √√ √
17 *Front fork• Check operation and for oil leakage.√√√√
18 *Shock absorber
• Check operation and shock absorbers for oil leakage.√√√√
assemblies
19 *Carburetor• Adjust engine idling speed.√√ √ √√ √
• Change. (See page 6-9.)√When the oil change indicator light
20Engine oilcomes on (every 3000 km)
• Check oil level and vehicle for oil leakage. Every 3000 km√
21 *Engine oil strainer• Clean.√√√
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To install the panel
Place the panel in the original posi-
tion, and then install the screw.
EAU19603
Checking the spark plug
The 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 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. Spark plug cap
1. Remove the spark plug cap.
1. Spark plug wrench
2. Remove the spark plug as
shown, with the spark plug
wrench included in the owner’s
tool kit.
To 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).
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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. Spark plug gap
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.
Tightening torque:
Spark plug:
20 Nm (2.0 m•kgf, 14.5 ft•lbf)
Spark plug gap:
0.7 ~ 0.8 (0.02 ~ 0.03 in)
1
ZAUM0037
Specified spark plug:
NGK (CR8E)
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EAUM1260
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 oil change indicator
display 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.
1. Engine oil filler cap
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.
1. Engine oil filler cap
2. Dipstick
3. Maximum level mark
4. Minimum level mark
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
1. Start the engine, warm it up for
several minutes, and then turn it
off.
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3
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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
2. Washer
4. Check the washer for damage
and replace it if necessary.
5. 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.
6. Add the specified amount of the
recommended engine oil, and
then install and tighten the oil
filler cap.
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.
7. 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.
8. Reset the oil change indicator
display according to the follo-
wing procedure.
To reset the oil change indicator
display
1. Push and hold the "TRIP" button
for a MAXIMUM of three
seconds. While pushing the
"TRIP" button, turn the key to
"f".
Recommended engine oil:
See page 8-1.
Oil change quantity:
1.2 L (1.27 US qt) (1.06 Imp.qt)
Tightening torque:
Engine oil drain bolt:
32 Nm (3.2 m•kgf, 23.1 ft•lbf)
2
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2. Release the "TRIP" button and
the oil change indicator light will
go off.
3. Turn the key to "e".
NOTE:
If the engine oil is changed before the
oil change indicator light comes on
(i.e. before the periodic oil change
interval has been reached), the indi-
cator light must be reset after the oil
change for the next periodic oil chan-
ge to be indicated at the correct time.
To reset the oil change indicator light
before the periodic oil change interval
has been reached, follow the above
procedure, but note that the indicator
light will come on for 1.4 seconds
after releasing the reset button, other-
wise repeat the procedure.
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.
1. Final trasmission oil filler cap
1. Final transmission oil drain bolt
4. Remove the oil filler cap and
drain bolt to drain the oil from the
final transmission case.
5. Install the final transmission oil
drain bolt, and then tighten it to
the specified torque.
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