2006 YAMAHA YFM50R ignition

2-27
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8Always turn off the engine when refueling.
8Do not refuel right after the engine has
been running and is still very hot.
8Do not spill gasoline on the engine or
exhaust pipe/muffler when refueling.
Never refuel while smoking, or while in the
vicinity of sparks, open flames, or other
sources of ignition such as the pilot lights
of water heaters and clothes dryers.
Gasoline can catch fire. You could be
burned.
8When transporting the machine in another
vehicle, be sure it is kept upright and that
the fuel cock is in the “OFF” position.
Otherwise, fuel may leak out of the carbu-
retor or fuel tank.
5YF-9-62 ~3 3/4/05 9:55 PM Page 62

4-3
EBU00043
Indicator lights
EBU00603
Neutral indicator light “N”
This indicator light comes on when the transmis-
sion is in neutral.
EBU00053
Handlebar switches
EBU11580
Engine stop switch “ENG. STOP”
Make sure that the engine stop switch is in the
“RUN” position before starting the engine. The
engine stop switch controls ignition and can be
used at all times to stop the engine, especially in
an emergency. The engine will not start or run
when the engine stop switch is turned to “OFF”.
q
1. Neutral indicator light “N”
1. Témoin de point mort “N”
1. Luz de control de punto muerto “N”
qw
1. Engine stop switch “ENG. STOP”
2. Start switch “START”
1. Coupe-circuit du moteur “ENG. STOP”
2. Contacteur du démarreur “START”
1. Interruptor de paro del motor “ENG. STOP”
2. Interruptor de arranque “START”
5YF-9-62 4~5 3/4/05 9:58 PM Page 2

6-5
NOTE:
This model is equipped with an ignition circuit
cut-off system.
The engine can be started under the following
conditions.
a. When the transmission is in neutral. At this
time the neutral indicator light should come
on. If the light does not come on, ask a
Yamaha dealer to inspect it.
b. When the transmission is in the drive posi-
tion and the rear brake lever is applied.
However, it is recommended to shift into
neutral before starting the engine.
5. Use the choke lever in reference to the fig-
ure:
Position 1: Cold engine start–
ambient temperature below 30° C.
Position 2: Warming up position.
Position 3: Cold engine start–
ambient temperature above 25° C
and warm engine start position.
CHOKE
ONOFF
0°10°20°30°
°C
a
3 1
1
23
1. Fully open “ON”2. Half open (warming up position)
3. Closed “OFF”a. Choke lever
1. Pleine course “ON”2. Mi-course (position de chauffe)3. Fermé “OFF”a. Levier de choke
1. Abierto completamente “ON”
2. Semiabierto (posición de calentamiento)
3. Cerrado “OFF”a. Palanca del starter AMBIENT TEMP. / CHOKE LEVER POSITION
POSITION DE LEVIER DE STARTER / TEMP. AMBIANTEPOSICION DEL MANDO DEL STARTER / TEMP. AMBIENTE
5YF-9-62 6 2/23/05 6:54 PM Page 4

8-59
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Battery electrolyte is poisonous and danger-
ous, causing severe burns, etc. It contains
sulfuric acid. Avoid contact with skin, eyes
or clothing.
Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten
egg or vegetable oil. Call a physician imme-
diately.
EYES: Flush with water for 15 minutes and
get prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flame, cigarettes or other sources of
ignition away. Ventilate when charging or
using in an enclosed space. Always shield
your eyes when working near batteries.
KEEP OUT OF REACH OF CHILDREN.
5YF-9-62 8 2/23/05 6:56 PM Page 8-59

8-67
EBU00413
Troubleshooting
Although Yamaha machines receive a rigid
inspection before shipment from the factory,
trouble may occur during operation.
Any problem in the fuel, compression, or ignition
systems can cause poor starting and loss of
power. The troubleshooting chart describes a
quick, easy procedure for making checks. If
your machine requires any repair, take it to a
Yamaha dealer.
The skilled technicians at a Yamaha dealership
have the tools, experience, and know-how to
properly service your machine. Use only gen-
uine Yamaha parts on your machine. Imitation
parts may look like Yamaha parts, but they are
often inferior. Consequently, they have a short-
er service life and can lead to expensive repair
bills.
5YF-9-62 8 2/23/05 6:56 PM Page 8-67

EBU00440
Troubleshooting chart
1. Fuel
Check if there is
fuel in the fuel
tank
2. Compression
Use electric starter
to see if there is
compression
3. Ignition
Remove spark plug
and check electrodes
WetWipe clean with dry
cloth
DryAttach spark plug cap
and ground to chassisUse electric
starterSpark weak
Spark goodIgnition system normal
No spark
Ask a Yamaha dealer to inspect
Adjust spark plug gap
or replace spark plug
There is compressonCompression normal
Ask a Yamaha dealer to inspectNo compression
There is fuelTurn the fuel
cock to “OFF”
Remove the
fuel hose from
the fuel cock.
Some fuelTurn the fuel
cock to “RES”Restart engine
No fuelSupply fuel
4. Battery
Use electric
starter
Engine turns
over quicklyBattery good
Engine turns
over slowlyCheck fluid, recharge,
check connections
Check fuel flow
Water or dirt
mixed in fuel
Turn the fuel
cock to “ON”No fuelFuel cock clogged
Clean the fuel filter
and the fuel tank
Clean fuel cock
8-71
5YF-9-62 8 2/23/05 6:56 PM Page 8-71

10-5
Model YFM50R
Brake:
Front brake type Drum brake
Operation Right hand operation
Rear brake type Drum brake
Operation Left hand operation
Suspension:
Front Leading arm
Rear Swingarm
Shock absorber:
Front Coil spring/Oil damper
Rear Coil spring/Oil damper
Wheel travel:
Front wheel travel 57 mm
Rear wheel travel 56 mm
Electrical:
Ignition system C.D.I.
Charging system A.C. magneto
Battery type/voltage, capacity 12N7D-3B/12V, 7Ah
Indicator light voltage, wattage ×quantity:
Neutral 12V, 1.7W ×1
Fuse: 5A
5YF-9-62 9~ 3/4/05 10:00 PM Page 312