2006 YAMAHA CYGNUS 125 service

NOTE: If the engine fails to start, release the
start switch, wait for a few seconds,
then try again. Do not crank the en-
gine for more than 5 seconds on any
single attempt preserve battery charge.
If the engine cannot be started by start-
ing motor, try tramping on the kick-
starter.
If the engine still fails to start after the
start switch has be pressed for 4-5
times, turn the throttle grip for 1/8-1/4
of a circle and then press the startswitch again.
■ ■■ ■
■Start the engineNOTE: ·Check the engine before starting.·Check the fuel level.·The motorcycle should be supported
by center-stand.·The side-stand should be in horizon-
tal position.·Operate on the left side of themotorcycle.
ON
1.Turn the key of main switch to posi-
tion ON.
2.Release the throttle grip, press the
start switch to start the engine while
holding the front or rear brake lever.RUNNING AND OPERATION
3.Before starting off, allow the engine
to warm up for 1-3 minutes, which will
maximize the engine's service life.
Never accelerate the motorcycle rap-
idly when the engine is still cold,
otherwise, the accelerating ability will
be reduced.
5-1
1/8
1/4

OPERATION AND IMPORTANT RIDING POINTS■ ■■ ■
■Engine exhaustWe take the environmental protection
into consideration maturely, our mo-
torcycles are equipped with AIS sys-
tem and agent catalyzing device in the
exhaust pipe, and can meet the re-
quirement of Europe II emission
standard.
Massive incomplete combusted gas
mixture will re-combust when flowing
into the hot agent catalyzing device,
thus causes exhaust pipe overheat-
ing and shortens the service life of
catalyzing device. To prevent this kind
of situation and other damages,
please read the following list carefully.
CAUTION:

. Only use unleaded fuels (#93 un-
leaded petrol). The leaded petrol will
cause the catalyzing device be-
come contaminated and rendered
useless.. When riding, do not turn off the
main switch. Otherwise, it will pro-
duce massive incomplete com-
busted gases.. If the ignition or fuel system is
out of condition, the agent cata-
lyzing device will overheat.. Be careful when the motorcycle
rides for a period of time, the out-
side of exhaust pipe will be very hot.. Do not splash or overfill the fuel
to the exhaust pipe when re-fueling.
It may burn when the petrol drippedto hot exhaust pipe.
5-3
WARNING

Do not ride or park your motorcycle
over inflammable material (like
mow or something else) to avoidfire hazard.

■ ■■ ■
■Tool kitsService information included in this
manual and the tool kits provided will
help you perform the maintenance and
minor repairs. However, additional
tools such as a torque wrench to fas-
ten the nuts or screws may be neces-
sary for correctly performing certain
maintenance work.
WARNING

Modification without approval of
our company may affect the func-
tion of the motorcycle, and renderhazards.
MAINTENANCE
1.fuel drain plug 2.spring
3.filter screen 4.O-ringCAUTION:

When removing the drain plug, the
spring, the filter screen and O-ring
will fall out, do not lose any of thecomponents.
■ ■■ ■
■Replace engine oil1.Start the engine and warm the
vehicle for a few minutes, then shut
off the engine.
2.Place an oil pan under the engine
to collect the engine oil used.
3.Remove the drain bolt.
7-3
1. tool kits
12
4
1 3

MAINTENANCE2.Remove the negative terminal (-) and
positive terminal (+), and you can take
off the battery.
3.Clean the connector.
Use steel brush to clean the rust and
dirt on the connector, after coating thin
grease to the connector, assemble the
parts reversely.CAUTION:

1.The accumulator equipped is free
of maintenance (do not need to add
water), you have to use the sealed
charger (constant voltage/current
value or constant voltage value)
Electrolyte is poisonous and dan-
gerous and will cause severe burn
injury. It contains strong acid;
avoid any contact with skin, eyes
or clothing. In case of contact, the
procedure is as per following:
External: Flush with water. Internal:
Drink large amount of boiled water
or milk, and drink milk of magnesia,
eggs mixture or vegetable oil, and
promptly consult for medical atten-
tion immediately.
Eyes: Flush with water for 15 min-
utes and seek prompt medical
attention. Batteries may produce
explosive gases. Therefore, keep
fire source (sparks, flames,
cigarettes, etc.) away from batter-
ies and provide sufficient ventila-
tion when charging or using the
battery in an enclosed space. Take
care of your eyes while working
around the battery.
Anyway, keep children away frombattery.
■ ■■ ■
■Accumulator·Disassembly of the accumulator
1.Remove the battery cover.
CAUTION:

1 11 1
1 Never attempt to remove the cov-
ers on the accumulator.
2 22 2
2 If the motorcycle will not be used
for more than 15 days, you should
charge the battery before riding.
3 33 3
3 If the motorcycle is always ser-
viced in low speed and short
distance, and will be started
frequently, you should check the
battery regularly and charge it ifnecessary. specified for the accumulator,
otherwise, it will shorten the service
lift of accumulator.
2.Before using the battery for the
first time, you should charge it for
about 1-2 hours to extend the ser-vice life.
WARNING
7-10
accumulator
connector