2004 YAMAHA YFM50S battery

8-61
EBU11950
Replenishing the battery fluid
A poorly maintained battery will corrode and dis-
charge quickly. The battery fluid should be
checked at least once a month.
1. The level should be between the maximum
and minimum level marks. Use only dis-
tilled water if refilling is necessary.
2. Disconnect the negative (–) lead.
3. Disconnect the positive (+) lead, and then
remove the battery.
cC
Normal tap water contains minerals which
are harmful to a battery. Therefore, refill only
with distilled water.
q
wer
1. Maximum level mark 2. Minimum level mark
3. Negative lead 4. Positive lead
1. Repére de niveau maximum 2. Repére de niveau manimum
3. Fil négatif 4. Fil positif
1. Marca de máximo 2. Marca de mínimo
3. Cable Negativo 4. Cable Positivo
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8-63
4. When the machine is not to be used for a
month or longer, remove the battery and
store it in a cool, dark place. Completely
recharge the battery before using.
5. If the battery is to be stored for a longer
period than the above, check the specific
gravity at least once a month and recharge
the battery when it is too low.
6. Always make sure the connections are cor-
rect when putting the battery back in the
machine. Make sure the breather hose is
properly connected and is not damaged or
obstructed.
5YF-9-60 8 4/24/03 6:35 PM Page 8-63

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
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9-9
4. Block up the frame to raise all wheels off
the ground.
5. Tie a plastic bag over the exhaust pipe out-
let to prevent moisture from entering.
6. If storing in a humid or salt-air atmosphere,
coat all exposed metal surfaces with a light
film of oil. Do not apply oil to any rubber
parts or the seat cover.
7. Remove the battery and charge it. Store it
in a dry place and recharge it once a
month. Do not store the battery in an
excessively warm or cold place (less than
0°C or more than 30°C).
NOTE:
Make any necessary repairs before storing the
machine.
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10-5
Model YFM50
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
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