2012 YAMAHA CYGNUS L light

INSTRUMENT AND CONTROL FUNCTIONS
3-12
3
EAU15305
Sidestand The sidestand is located on the left side
of the frame. Raise the sidestand or
lower it with your foot while holding the
vehicle upright.TIPThe built-in sidestand switch is part of
the ignition circuit cut-off system, which
cuts the ignition in certain situations.
(See the following section for an expla-
nation of the ignition circuit cut-off sys-
tem.)
WARNING
EWA10241
The vehicle must not be ridden with
the sidestand down, or if the side-
stand cannot be properly moved up
(or does not stay up), otherwise the
sidestand could contact the ground
and distract the operator, resulting
in a possible loss of control.
Yamaha’s ignition circuit cut-off
system has been designed to assist
the operator in fulfilling the respon-
sibility of raising the sidestand be-
fore starting off. Therefore, check
this system regularly and have a
Yamaha dealer repair it if it does not
function properly.
EAU15373
Ignition circuit cut-off system The ignition circuit cut-off system (com-
prising the sidestand switch and brake
light switches) has the following func-
tions.●
It prevents starting when the side-
stand is up, but neither brake is ap-
plied.
●
It prevents starting when either
brake is applied, but the sidestand
is still down.
●
It cuts the running engine when the
sidestand is moved down.
Periodically check the operation of the
ignition circuit cut-off system according
to the following procedure.
TIPThis check is most reliable if performed
with a warmed-up engine.
1. Sidestand
1
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FOR YOUR SAFETY – PRE-OPERATION CHECKS
4-2
4
Throttle grip Make sure that operation is smooth.
Check throttle grip free play.
If necessary, have Yamaha dealer adjust throttle grip free play and lubricate cable
and grip housing.6-15, 6-21
Control cables Make sure that operation is smooth.
Lubricate if necessary.6-21
Wheels and tires Check for damage.
Check tire condition and tread depth.
Check air pressure.
Correct if necessary.6-16, 6-17
Brake levers Make sure that operation is smooth.
Lubricate lever pivoting points if necessary.6-22
Centerstand, sidestand Make sure that operation is smooth.
Lubricate pivots if necessary.6-22
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 not working correctly, have Yamaha dealer check vehicle.3-12 ITEM CHECKS PAGE
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OPERATION AND IMPORTANT RIDING POINTS
5-1
5
EAU15951
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10271
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which could cause an accident
or injury.
EAUT1865
Starting the engine NOTICE
ECA10250
See page 5-3 for engine break-in in-
structions prior to operating the ve-
hicle for the first time.In order for the ignition circuit cut-off
system to enable starting, the side-
stand must be up.
See page 3-12 for more information.
1. Turn the key to “ON”.
The engine trouble warning light
should come on for a few seconds,
then go off. NOTICE: If the warn-
ing light does not go off, have a
Yamaha dealer check its electri-
cal circuit.
[ECAT1120]
2. Close the throttle completely.
3. Start the engine by pushing the
start switch while applying the front
or rear brake.
If the engine does not start, re-
lease the start switch, wait a few
seconds, and then try again. Each
starting attempt should be as short
as possible to preserve the bat-
tery. Do not crank the engine more
than 5 seconds on any one at-tempt. If the engine does not start
with the starter motor, try using the
kickstarter.
NOTICE
ECA11042
For maximum engine life, never ac-
celerate hard when the engine is
cold!
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OPERATION AND IMPORTANT RIDING POINTS
5-3
5
EAU16820
Tips for reducing fuel con-
sumption Fuel consumption depends largely on
your riding style. Consider the following
tips to reduce fuel consumption:●
Avoid high engine speeds during
acceleration.
●
Avoid high engine speeds with no
load on the engine.
●
Turn 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).
EAU16830
Engine break-in There 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.
During this period, prolonged full-throt-
tle operation or any condition that might
result in engine overheating must be
avoided.
EAU45582
0–150 km (0–90 mi)
Avoid prolonged operation above 1/3
throttle.
150–500 km (90–300 mi)
Avoid prolonged operation above 1/2
throttle.
U1RSE0E0.book Page 3 Tuesday, October 18, 2011 8:56 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-6
6
EAU45610
TIP●
Air filter
This model’s air filter is equipped with a disposable oil-coated paper element, which must not be cleaned with com-
pressed air to avoid damaging it.
The air filter element needs to be replaced more frequently when riding in unusually wet or dusty areas.
●
V-belt case air filter
The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
●
Hydraulic brake service
Regularly check and, if necessary, correct the brake fluid level.
Every two years replace the internal components of the brake master cylinder and caliper, and change the brake fluid.
Replace the brake hose every four years and if cracked or damaged.
21*Front and rear brake
switches Check operation.√√√√√√
22Moving parts and
cables Lubricate.√√√√√
23*Throttle grip Check operation.
Check throttle grip free play, and
adjust if necessary.
Lubricate cable and grip housing.√√√√√
24*Lights, signals and
switches Check operation.
Adjust headlight beam.√√√√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK 1000 km
(600 mi)6000 km
(3500 mi)12000 km
(7000 mi)18000 km
(10500 mi)24000 km
(14000 mi)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-8
6 2. Disconnect the headlight lead cou-
pler, and the auxiliary light lead
coupler.
To install the cowling
1. Connect the headlight lead cou-
pler, and the auxiliary light lead
coupler.
2. Place the cowling in the original
position, and then install the
screws.
EAU19281
Panel A
To remove the panelRemove the screw, and then pull the
panel off as shown.To install the panel
Place the panel in the original position,
and then install the screw.
EAU45450
Panel B
To remove the panel1. Pull up the floorboard mat.2. Remove the screws, and then pull
the panel off as shown.
To install the panel
1. Place the panel in the original posi-
tion, and then install the screws.
2. Place the floorboard mat in the
original position.
1. Headlight lead coupler
2. Auxiliary light lead coupler
1
2
1. Screw
1
1. Floorboard mat
1. Screw
1
1
U1RSE0E0.book Page 8 Tuesday, October 18, 2011 8:56 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-9
6
EAU45591
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 mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug
1. Place the vehicle on the center-
stand.
2. Remove panel A. (See page 6-7.)
3. Remove the spark plug cap.
4. Remove the spark plug as shown,
using the spark plug wrench,
which is located in the rear storage
compartment. (See page 3-9.)
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).
TIPIf the spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, 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
necessary.
3. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
1. Spark plug wrench
1. Spark plug wrench
1
1
Specified spark plug:
NGK/CR6HSA
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-10
6 To install the spark plug
1. Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the
spark plug threads.
2. Install the spark plug with the
spark plug wrench, and then tight-
en it to the specified torque.
TIPIf 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 speci-
fied torque as soon as possible.3. Install the spark plug cap.
4. Install the panel.
EAU53150
Engine oil The engine oil level should be checked
before each ride. In addition, the oil
must be changed at the intervals spec-
ified in the periodic maintenance and
lubrication chart.
To check the engine oil level
1. Place the vehicle on the center-
stand. 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.
3. Wait a few minutes until the oil set-
tles, remove the engine oil filler
cap, wipe the engine oil dipstick
clean, insert it back into the oil filler
hole (without screwing it in), and
then remove it again to check the
oil level.TIPThe engine oil should be between the
minimum and maximum level marks.
1. Spark plug gapSpark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Tightening torque:
Spark plug:
13 Nm (1.3 m·kgf, 9.4 ft·lbf)
U1RSE0E0.book Page 10 Tuesday, October 18, 2011 8:56 AM