2000 YAMAHA CYGNUS 125 lights

5-3
1
2
3
4
5
6
7
8
9
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.
5ML-F8199-E0ch5re.pmd2003/12/12, 16:03 3

6-5
1
2
3
4
5
6
7
8
9
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.———— —
25
*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
1 6 12 18 24
5ML-F8199-E0ch6re.pmd2003/12/12, 16:04 5

6-26
1
2
3
4
5
6
7
8
9
PERIODIC MAINTENANCE AND MINOR REPAIR
Specified fuses:
Main fuse:
30 A
Headlight fuse:
15 A
Signaling system fuse:
15 A
Ignition fuse:
7.5 A
Carburetor heater fuse:
7.5 A
ECA10640
cCDo not use a fuse of a higher amper-
age rating than recommended to
avoid causing extensive damage to
the electrical system and possibly a
fire.3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows again,
have a Yamaha dealer check the
electrical system.
EAU23710
Replacing a headlight bulbThis model is equipped with quartz bulb
headlights. If a headlight bulb burns out,
replace it as follows.
1. Place the vehicle on the
centerstand.
2. Remove panel B. (See page 6-6.)
3. Disconnect the headlight coupler,
and then remove the bulb cover.ZAUM00**
1
1. Bulb cover4. Unhook the headlight bulb holder,
and then remove the defective bulb.
ZAUM00**
1
1. Headlight bulb holder
EWA10790
wHeadlight bulbs get very hot. There-
fore, keep flammable products away
from a lit headlight bulb, and do not
touch the bulb until it has cooled
down.5. Place a new headlight bulb into po-
sition, and then secure it with the
bulb holder.
ECA10660
cCDo not touch the glass part of the
headlight bulb to keep it free from oil,
otherwise the transparency of the
glass, the luminosity of the bulb, and
5ML-F8199-E0ch6re.pmd2003/12/12, 16:04 26

7-1
1
2
3
4
5
6
7
8
9
SCOOTER CARE AND STORAGE
EAU26090
CareWhile the open design of a scooter re-
veals the attractiveness of the technol-
ogy, it also makes it more vulnerable.
Rust and corrosion can develop even if
high-quality components are used. A
rusty exhaust pipe may go unnoticed on
a car, however, it detracts from the over-
all appearance of a scooter. Frequent and
proper care does not only comply with
the terms of the warranty, but it will also
keep your scooter looking good, extend
its life and optimize its performance.
Before cleaning
1. Cover the muffler outlet with a plas-
tic bag after the engine has cooled
down.
2. Make sure that all caps and cov-
ers as well as all electrical couplers
and connectors, including the spark
plug cap, are tightly installed.
3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such prod-ucts onto seals, gaskets and wheel
axles. Always rinse the dirt and
degreaser off with water.
Cleaning
ECA10780
cC8 88 8
8Avoid using strong acidic wheel
cleaners, especially on spoked
wheels. If such products are used
on hard-to-remove dirt, do not
leave the cleaner on the affected
area any longer than instructed.
Also, thoroughly rinse the area
off with water, immediately dry
it, and then apply a corrosion
protection spray.
8 88 8
8Improper cleaning can damage
windshields, cowlings, panels
and other plastic parts. Use only
a soft, clean cloth or sponge with
mild detergent and water to clean
plastic.
8 88 8
8Do not use any harsh chemical
products on plastic parts. Be sure
to avoid using cloths or sponges
which have been in contact with
strong or abrasive cleaning prod-ucts, solvent or thinner, fuel
(gasoline), rust removers or in-
hibitors, brake fluid, antifreeze or
electrolyte.
8 88 8
8Do not use high-pressure wash-
ers or steam-jet cleaners since
they cause water seepage and
deterioration in the following ar-
eas: seals (of wheel and
swingarm bearings, fork and
brakes), electric components
(couplers, connectors, instru-
ments, switches and lights),
breather hoses and vents.
8 88 8
8For scooters equipped with a
windshield: Do not use strong
cleaners or hard sponges as they
will cause dulling or scratching.
Some cleaning compounds for
plastic may leave scratches on
the windshield. Test the product
on a small hidden part of the
windshield to make sure that it
does not leave any marks. If the
windshield is scratched, use a
quality plastic polishing com-
pound after washing.
EAU25990
SCOOTER CARE AND STORAGE
5ML-F8199-E0ch7re.pmd2003/12/12, 16:04 1

1
2
3
4
5
6
7
8
9
INDEXAAcceleration and deceleration.................. 5-2
Air filter and V-belt case air filter
elements................................................6-11BBattery.....................................................6-23
Brake fluid level, checking ......................6-19
Brake fluid, changing ..............................6-20
Brake lever, front ...................................... 3-4
Brake lever, rear....................................... 3-4
Brake levers, lubricating.........................6-21
Brake pads and shoes, checking..........6-18
Braking...................................................... 5-2CCables, checking and lubricating ...........6-20
Carburetor,adjusting...............................6-13
Catalytic converter................................... 3-6
Centerstand and sidestand, checking and lu-
bricating.................................................6-21DDimmer switch.......................................... 3-4EEngine break-in ......................................... 5-3
Engine oil and oil strainer .......................... 6-8FFinal transmission oil ..............................6-10
Front brake lever free play, checking....6-17
Fuel........................................................... 3-6
Fuel consumption, tips for reducing ......... 5-3
Fuel gauge ................................................ 3-3
Fuel tank cap ............................................ 3-5
Fuses, replacing.....................................6-25
HHandlebar switches.................................. 3-3
Headlight bulb, replacing........................6-26
Helmet holder............................................ 3-8
High beam indicator light .......................... 3-2
Horn switch............................................... 3-4IIdentification numbers.............................. 9-1
Indicator lights........................................... 3-2KKey identification number......................... 9-1
Kickstarter................................................ 3-7LLuggage hook........................................... 3-9MMain switch/steering lock......................... 3-1
Model label................................................ 9-2PPanels, removing and installing................ 6-6
Parking...................................................... 5-4
Part locations............................................ 2-1
Periodic maintenance and lubrication
chart ........................................................ 6-3
Pre-operation check list........................... 4-2
Rear brake lever free play, adjusting .....6-18SSafe-riding points...................................... 1-4
Safety information..................................... 1-1
Seat ........................................................... 3-7
Sidestand................................................3-10
Sidestand switch operation check .........3-10Spark plug, checking................................ 6-7
Specifications............................................ 8-1
Speedometer unit..................................... 3-3
Start switch............................................... 3-4
Starting a cold engine ............................... 5-1
Starting off ................................................. 5-2
Storage...................................................... 7-3
Storage compartment............................... 3-8
TTail/brake light bulb, replacing ................6-27
Throttle cable free play, adjusting..........6-14
Throttle grip and cable, checking and lubricat-
ing ..........................................................6-21
Tires........................................................6-15
Tool kit ....................................................... 6-1
Troubleshooting......................................6-29
Troubleshooting chart.............................6-30
Turn signal indicator light.......................... 3-2
Turn signal light bulb (front), replacing ...6-28
Turn signal switch ..................................... 3-4VValve clearance, adjusting ......................6-14
Vehicle identification number .................... 9-1WWheel bearings, checking ......................6-23
Wheels....................................................6-17
5ML-F8199-E0idx.pmd2003/12/12, 16:06 1