2006 YAMAHA CYGNUS 125 ignition

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.

MAINTENANCE
9 Adjust throttle grip7-7
10 Check ignition plug7-7
11 Check front/rear brake7-8
12 Check front fork7-9
13 Check steering system7-9
14 Replace fuse7-9
15 Accumulator7-10

Periodical maintenance/lubrication table
MAINTENANCE


Periodical maintenanceSee detailed description and time requirement for the general periodical maintenance of motorcycle and exhaust gas
control system in the "Consumer Manual".
The information supplied in this chapter is some kind of easy maintenance which can be finished by consumer him/
herself. If you are not familiar with the repair and maintenance procedure, ask the agency to finish it.
Items
Air drain*
Ignition plugCheck the clearance, adjust if necessary.
1,500km or 2 months
DescriptionRunning-in
500km
Check the working condition, clean or replace if necessary.
Air filterClean every 1,000km, replace if necessary.
Carburetor*Check idle speed/start operation, adjust if necessary.
Check the fuel tube (or vacuum tube) for crackles or damages, replace if necessary.
Fuel line*
Engine oil
Replace (warming engine before exhausting)
Engine oil filter*
Crankcase filter*
Clean every 1,000km, replace if necessary. Clean, replace if necessary.
Gear oil*Check leakage, replace every 3,000km.Front brake*(dish brake)
Check action/brake fluid leakage, see "Note". Replace if necessary.
Front brake(drum brake)
Check action, replace if necessary.
1,500km or 2 months
At the firstEvery
Check action, replace if necessary.
Lubricate a little. **
Check wearing and damage. Repair if necessary.
Check the fastening/damages of the bearing assembly, replace when there are damages.
Rear brake
Wheel
Wheel bearing* Front shaft
7-1

CAUTION:

Before the motorcycle leaving factory,
we have already set the carburetor to
the standard position. Change the set-
ting at random will affect the engine
performance and increase the dis-charge of exhaust gas.■ ■■ ■
■Adjust throttle gripNOTE: Adjust idle speed before adjusting thefree gap of throttle grip.
1.Loose the fixing nut.
2.Turn the adjustor till the clearance
meets specification.
3.Fasten the fixing nut and recheck
the clearance whether meets the stan-
dard clearance. idle speed
adjusting
screw
MAINTENANCE
■ ■■ ■
■Adjust idle speedNOTE: Warm the engine before adjusting theidle speed.
1.Remove the small lid which locates
under the seat.
2.Turn the idle speed adjusting screw.
Turn clockwiseTurn counter-
clockwise
Idle speed
specificationSpeed up
Speed down
1700rpm 50rpm
Clearance: 0.7mm - 0.8mm
Model: C7ER
Clearance specified: 3 - 5mm
Adjusting direction of throttle grip clearance1. Remove the ignition plug to check
the clearance and model.■ ■■ ■
■Check ignition plug
7-7
vehicle idling adjustment
position3-5mm

SPECIFICATIONDimension and weightOverall length
Overall width
Overall height
Maximum load
Wheel baseMinimum ground clearanceBasic weight
1,860mm
670mm
1,045mm
153 ± 7kg
1,250mm ± 30mm
95mm ± 20mm
105kg ± 7kg4-stroke SOHC
Single cylinder, Forward inclined
125cc
51.5mm
× 60mm
9.5:1
electrical/kick-start
Forced lubrication
1.2L
■ ■■ ■
■Specification
Item Specification
Item Specification
Engine
ModelCylinder arrangementAir displacement
Bore x Stroke
Compression ratio
Starting system
LubricationE/G lubrication oil capacity
Electrical devices
Ignition spark modelAccumulator capacityAccumulator modelTransmission devicePrimary reductionReduction ratio(idem)Second reductionReduction ratio(idem)ClutchHelical gear
40/15
Spur gear
38/13
Dry, centrifugal
C7ER
12V, 6AH
GTX7A-BS/YTX7A-BS
Variable speed ratio
Model
Shift type
Variable speed ratioV-belt infinite variable speed
Infinite variable speed
0.852 - 2.572 FuelTank capacity
5.4L
9-1