2005 YAMAHA CYGNUS 125 light

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INSTRUMENT AND CONTROL FUNCTIONS
EAU10980
Indicator lightsZAUM00**
12
ZAUM00**
12
1. High beam indicator light ”&”
2. Turn signal indicator light “5”
EAU11020
Turn signal indicator light “
5 55 5
5”
This indicator light flashes when the turn
signal switch is pushed to the left or right.
EAU11080
High beam indicator light “
& && &
&”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAUT1370
Oil change indicator
This indicator changes from green to red
every 3000 km (1800 mi) to indicate that
the engine oil should be changed.After changing the engine oil, reset the
oil change indicator switch by pushing
it in.
ZAUM00**
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1. Oil change indicator
2. Reset switchIf the engine oil is changed before the
3000 km (1800 mi) interval, the indica-
tor must be reset after the oil change
for the next periodic oil change to be
indicated at the correct time.NOTE:
After resetting the oil change indicator
switch, the indicator changes from red
to green.
ECA10280
cCAfter 1000 km (600 mi) of operation,
the engine oil must be changed.
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INSTRUMENT AND CONTROL FUNCTIONS
EAU12400
Dimmer switch “
% %% %
%/
& && &
&”
Set this switch to “&” for the high beam
and to “%” for the low beam.
EAU12460
Turn signal switch “
4 44 4
4/
6 66 6
6”
To signal a right-hand turn, push this
switch to “4”. To signal a left-hand turn,
push this switch to “6”. When released,
the switch returns to the center position.
To cancel the turn signal lights, push the
switch in after it has returned to the cen-
ter position.
EAU12500
Horn switch “
* ** *
*”
Press this switch to sound the horn.
EAU12720
Start switch “
, ,, ,
,”
With the sidestand up, push this switch
while applying the front or rear brake to
crank the engine with the starter.
ECA10050
cCSee page 5-1 for starting instructions
prior to starting the engine.
EAU12900
Front brake leverZAUM00**
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1. Front brake leverThe front brake lever is located on the
right handlebar grip. To apply the front
brake, pull this lever toward the handle-
bar grip.
EAU12950
Rear brake leverZAUM00**
1
1. Rear brake leverThe rear brake lever is located on the
left handlebar grip. To apply the rear
brake, pull this lever toward the handle-
bar grip.
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INSTRUMENT AND CONTROL FUNCTIONS
EAU13680
KickstarterZAUM00**
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1. KickstarterTo start the engine, fold out the
kickstarter lever, move it down lightly
with your foot until the gears engage,
and then push it down smoothly but
forcefully.
EAU13931
SeatTo open the seat
1. Place the scooter on the
centerstand.
2. Insert the key into the main switch,
and then turn it counterclockwise.ZAUM00**
OFFON
NOTE:
Do not push inward when turning the key.3. Fold the seat up.
To close the seat
1. Fold the seat down, and then push
it down to lock it in place.
2. Remove the key from the main
switch if the scooter will be left un-
attended.
NOTE:
Make sure that the seat is properly se-
cured before riding.
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PRE-OPERATION CHECKSCenterstand, sidestand Make sure that operation is smooth.
 Lubricate pivots if necessary.6-21
Chassis fasteners Make sure that all nuts, bolts and screws are properly tightened.
 Tighten if necessary.-
Instruments, lights, signals
and switches Check operation.
 Correct if necessary.-
Sidestand switch Check operation of ignition circuit cut-off system.
 If system is defective, have Yamaha dealer check vehicle.3-10 ITEM CHECKS PAGE
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OPERATION AND IMPORTANT RIDING POINTS
EAU16830
Engine break-inThere 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. Dur-
ing this period, prolonged full-throttle
operation or any condition that might
result in engine overheating must be
avoided.
EAU16820
Tips for reducing fuel con-
sumptionFuel consumption depends largely on
your riding style. Consider the following
tips to reduce fuel consumption:
8Avoid high engine speeds during
acceleration.
8Avoid high engine speeds with no
load on the engine.
8Turn 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).
EAU16950
0~150 km (0~90 mi)
Avoid prolonged operation above 1/3
throttle.
After every hour of operation, stop the
engine, and then let it cool for five to
ten minutes.
Vary the engine speed from time to time.
Do not operate the engine at one set
throttle position.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
cCAfter 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 operation.
Vary the speed occasionally.
ECA10270
cCIf 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 MINOR REPAIR
EAU18660
NOTE:
8The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
8Hydraulic brake service
9Regularly check and, if necessary, correct the brake fluid level.
9Every two years replace the internal components of the brake master cylinder and caliper, and change the brake
fluid.
9Replace the brake hoses every four years and if cracked or damaged.24 Moving parts and cables Lubricate.———— —
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*Throttle grip housing
and cable Check operation and free play.
 Adjust the throttle cable free play if necessary.
 Lubricate the throttle grip housing and cable.———— —
26*Air induction system Check the air cut-off valve, reed valve, and hose for
damage.
 Replace the entire air induction system if necessary.———— —
27*Lights, signals and
switches Check operation.
 Adjust headlight beam.————— — NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (u1,000 km)
ANNUAL
CHECK
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PERIODIC MAINTENANCE AND MINOR REPAIR
EAUT1170
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 periodic mainte-
nance and lubrication char t. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug
1. Remove panel C. (See page 6-6.)
2. Remove the spark plug cap.
3. Remove the spark plug as shown,
with the spark plug wrench included
in the owner’s tool kit.ZAUM00**1
1. Spark plug wrench
To check the spark plug
1. Check that the porcelain insulator
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 dif-
ferent color, the engine could be defec-
tive. Do not attempt to diagnose such
problems yourself. Instead, have a
Yamaha dealer check the vehicle.2. Check the spark plug for electrode
erosion and excessive carbon or
other deposits, and replace it if nec-
essary.
Specified spark plug:
CR7E (NGK)
To install the spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifi-
cation.
ZAUM00**
12(×4)
1. Panel B
2. ScrewTo install the panel
Place the panel in the original position,
and then install the screws.
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PERIODIC MAINTENANCE AND MINOR REPAIRZAUM00**
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1. Spark plug gap
Spark plug gap:
0.6~0.7 mm (0.024~0.028 in)
2. Clean the surface of the spark plug
gasket and its mating surface, 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.
Tightening torque:
Spark plug:
13 Nm (1.3m  kgf, 9.4ft  lbf)
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 possible.4. Install the spark plug cap.
5. Install the panel.
EAUT1350
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 specified in the periodic
maintenance and lubrication chart. The
engine oil must also be changed at the
initial 1000 km (600 mi) and when the
oil change indicator changes from green
to red. The oil change indicator must be
reset after the initial 1000 km (600 mi).
(See page 3-2 for reset procedures.)
To check the engine oil level
1.Place the vehicle on the centerstand.NOTE:
Make sure that the vehicle is positioned
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 sev-
eral minutes, and then turn it off.
3. Wait a few minutes until the oil
settles, remove the oil filler cap,
wipe the dipstick clean, inser t it
back into the oil filler hole (without
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