YAMAHA CYGNUS 125 2005 Owner's Manual

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INSTRUMENT AND CONTROL FUNCTIONS
EAUT1382
Fuel tank capTo remove the fuel tank cap
Open the lid by pulling the lever up. In-
sert the key into the fuel tank cap lock
and turn it 1/4 turn counterclockwise. The
lock will be released and the fuel tank
cap can be removed.ZAUM00**11. LidNOTE:
After removing the fuel tank cap, place
it into the fuel tank cap holder as shown.
ZAUM00**
1
2
1. Fuel tank cap
2. Fuel tank cap holderTo install the fuel tank cap
1. Insert the fuel tank cap into the fuel
tank opening with the key inserted
in the lock and the match marks
aligned.ZAUM00**
1
1. Match marks
2. Turn the key clockwise to the origi-
nal position, and then remove it.NOTE:
The fuel tank cap cannot be installed
unless the key is in the lock. In addi-
tion, the key cannot be removed if the
cap is not properly installed and locked.3. Close the lid.
EWA10130
wMake sure that the fuel tank cap is
properly installed before riding.
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INSTRUMENT AND CONTROL FUNCTIONS
EAU13210
FuelZAUM00**
1
1. Fuel levelMake sure that there is sufficient fuel in
the tank. Fill the fuel tank to the bottom
of the filler tube as shown.
EWA10880
w8 88 8
8Do not overfill the fuel tank, oth-
erwise it may overflow when the
fuel warms up and expands.
8 88 8
8Avoid spilling fuel on the hot
engine.
ECA10070
cCImmediately wipe off spilled fuel with
a clean, dry, soft cloth, since fuel maydeteriorate painted surfaces or plas-
tic parts.
EAU33520
Recommended fuel:
REGULAR UNLEADED GASO-
LINE ONLY
Fuel tank capacity:
7.1 L (1.86 US gal) (1.55 Imp.gal)
ECA11400
cCUse only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts, such
as the valves and piston rings, as well
as to the exhaust system.Your Yamaha engine has been designed
to use regular unleaded gasoline with a
research octane number of 91 or higher.
If knocking (or pinging) occurs, use a
gasoline of a different brand or premium
unleaded fuel. Use of unleaded fuel will
extend spark plug life and reduce main-
tenance costs.
EAU13431
Catalytic converterThis model is equipped with a catalytic
converter in the exhaust system.
EWA10860
wThe exhaust system is hot after op-
eration. Make sure that the exhaust
system has cooled down before do-
ing any maintenance work.
ECA10700
cCThe following precautions must be
observed to prevent a fire hazard or
other damages.
8 88 8
8Use only unleaded gasoline. The
use of leaded gasoline will cause
unrepairable damage to the cata-
lytic converter.
8 88 8
8Never park the vehicle near pos-
sible fire hazards such as grass
or other materials that easily
burn.
8 88 8
8Do not allow the engine to idle
too long.
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INSTRUMENT AND CONTROL FUNCTIONS
EAU13680
KickstarterZAUM00**
1
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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INSTRUMENT AND CONTROL FUNCTIONS
EAU14300
Helmet holderZAUM00**
1
1. Helmet holderThe helmet holder is located under the
seat.
To secure a helmet to the helmet
holder
1. Open the seat. (See page 3-7.)
2. Attach the helmet to the helmet
holder, and then securely close the
seat.
EWA10160
wNever ride with a helmet attached to
the helmet holder, since the helmet
may hit objects, causing loss of con-
trol and possibly an accident.
To release the helmet from the hel-
met holder
Open the seat, remove the helmet from
the helmet holder, and then close the
seat.
EAU14510
Storage compartmentZAUM00**
1
1. Storage compartmentThere is a storage compartment under
the seat. (See page 3-7.)
EWA10960
w8 88 8
8Do not exceed the load limit of 5
kg (11 lb) for the storage com-
partment.
8 88 8
8Do not exceed the maximum
load of 170 kg (374 lb) for the ve-
hicle.
ECA10080
cCKeep the following points in mind
when using the storage compart-
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INSTRUMENT AND CONTROL FUNCTIONS
ment.
8 88 8
8Since the storage compartment
accumulates heat when exposed
to the sun, do not store anything
susceptible to heat inside it.
8 88 8
8To avoid humidity from spread-
ing through the storage compart-
ment, wrap wet articles in a plas-
tic bag before storing them in the
compartment.
8 88 8
8Since the storage compartment
may get wet while the scooter is
being washed, wrap any articles
stored in the compartment in a
plastic bag.
8 88 8
8Do not keep anything valuable or
breakable in the storage com-
partment.To store a helmet in the storage com-
partment, place the helmet upside-down
with the front facing forward.NOTE:
8Some helmets cannot be stored in
the storage compartment because
of their size or shape.8Do not leave your scooter unat-
tended with the seat open.
EAUT1070
Luggage hookZAUM00**11. Luggage hook
EWAT1030
w8 88 8
8Do not exceed the load limit of 3
kg (7 lb) for the luggage hook.
8 88 8
8Do not exceed the maximum
load of 170 kg (374 lb) for the ve-
hicle.
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INSTRUMENT AND CONTROL FUNCTIONS
EAU15300
SidestandThe sidestand is located on the left side
of the frame. Raise the sidestand or lower
it with your foot while holding the motor-
cycle upright.NOTE:
The built-in sidestand switch is part of
the ignition circuit cut-off system, which
cuts the ignition in certain situations.
(See further down for an explanation of
the ignition circuit cut-off system.)
EWA10240
wThe vehicle must not be ridden with
the sidestand down, or if the
sidestand cannot be properly moved
up (or does not stay up), otherwise
the sidestand could contact the
ground and distract the operator, re-
sulting in a possible loss of control.
Yamaha’s ignition circuit cut-off sys-
tem has been designed to assist the
operator in fulfilling the responsibil-
ity of raising the sidestand before
starting off. Therefore, check this sys-
tem regularly as described below andhave a Yamaha dealer repair it if it
does not function properly.
EAUT1091
Sidestand switch operation
checkCheck the operation of the sidestand
switch against the information below.
EWA10260
w8 88 8
8The vehicle must be placed on
the centerstand during this in-
spection.
8 88 8
8If a malfunction is noted, have a
Yamaha dealer check the system
before riding.
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INSTRUMENT AND CONTROL FUNCTIONS
Turn the key on.
Put the sidestand up.Push the start switch while applying
either of the brake levers. The engine will
start.Put the sidestand down.
If the engine stalls:
The sidestand switch is OK.
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PRE-OPERATION CHECKS
EAU15591
The condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpectedly,
even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid leakage or loss
of tire air pressure could have serious consequences. Therefore, it is very important, in addition to a thorough visual inspec-
tion, to check the following points before each ride.NOTE:
Pre-operation checks should be made each time the vehicle is used. Such an inspection can be accomplished in a very short
time; and the added safety it assures is more than worth the time involved.
EWA11150
wIf any item in the Pre-operation check list is not working properly, have it inspected and repaired before operating
the vehicle.
EAU15580
PRE-OPERATION CHECKS
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PRE-OPERATION CHECKS
ITEM CHECKS PAGE
Fuel Check fuel level in fuel tank.
 Refuel if necessary.
 Check fuel line for leakage.3-6
Engine oil Check oil level in engine.
 If necessary, add recommended oil to specified level.
 Check vehicle for oil leakage.6-8
Final transmission oil Check vehicle for oil leakage. 6-10
Front brake Check operation.
 If soft or spongy, have Yamaha dealer bleed hydraulic system.
 Check brake pads for wear.
 Replace if necessary.
 Check fluid level in reservoir.
 If necessary, add recommended brake fluid to specified level.
 Check hydraulic system for leakage.6-18, 6-19
Rear brake Check operation.
 Lubricate cable if necessary.
 Check lever free play.
 Adjust if necessary.6-18, 6-19
Throttle grip Make sure that operation is smooth.
 Check cable free play.
 If necessary, have Yamaha dealer adjust cable free play and lubricate cable and
grip housing.6-14, 6-21
Wheels and tires Check for damage.
 Check tire condition and tread depth.
 Check air pressure.
 Correct if necessary.6-15, 6-17
Brake levers Make sure that operation is smooth.
 Lubricate lever pivoting points if necessary.6-21
EAU15603
Pre-operation check list
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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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