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8-77
EBU00382Replenishing 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 upper and
lower level marks. Use only distilled water if
refilling is necessary.
2. Disconnect the negative (–) lead.
3. Disconnect the positive (+) lead and remove
the battery.cCNormal tap water contains minerals which
are harmful to a battery. Therefore, refill only
with distilled water.
w q
e
r
1. Maximum level mark
2. Minimum level mark
3. Negative (–) lead
4. Positive (+) lead1. Repère de niveau maximum
2. Repère de niveau minimum
3. Fil négatif (–)
4. Fil positif (+)1. Marca de máximo
2. Marca de mínimo
3. Cable negativo (–)
4. Cable positivo (+)
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8-79
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 reusing.
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.
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8-95
EBU00440Troubleshooting chart1. FuelCheck if there is
fuel in the fuel
tank.2. CompressionUse electric starter
to see if there is
compression.3. IgnitionRemove plug and
check electrodes.
Wet
Wipe clean with dry
cloth.
Dry
Attach plug cap and
ground to chassis.
Use electric
starter.
Spark weak.Spark good.
Ignition system normal.
No spark.
Ask a Yamaha dealer to inspect.
Adjust plug gap or
replace plug.
There is compresson.
Compression normal.Ask a Yamaha dealer to inspect.
No compression.
There is fuel.
Turn the fuel
cock to “OFF”.Remove the
fuel hose from
the fuel cock.
Some fuel.
Turn the fuel
cock to “RES”.
Restart engine.
No fuel.
Supply fuel.
4. BatteryUse electric
starter.
Engine turns
over quickly.
Battery good.
Engine turns
over slowly.
Check fluid, recharge,
check connections.
Check fuel flow.
Water or dirt
mixed in fuel.Turn the fuel
cock to “ON”.
No fuel.
Fuel cock clogged.
Clean the fuel filter
and the fuel tank.
Clean fuel cock.
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9-9
3. Clean the drive chain thoroughly and lubri-
cate it. (See page 8-59.)
4. Lubricate all control cables.
5. Block up the frame to raise all wheels off the
ground.
6. Tie a plastic bag over the exhaust pipe out-
let to prevent moisture from entering.
7. 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.
8. 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 YFA1
Shock absorber:
Front Coil spring/Oil damper
Rear Coil spring/Oil damper
Wheel travel:
Front 70 mmRear 80 mm
Electrical:
Ignition system C.D.I.
Charging system A.C. MagnetoBattery type/voltage, capacity 12N12C-4A-2/12V, 12AhHeadlight type: Bulb
Bulb volgate, wattage ×quantity:
Headlight 12V, 25 W/25 W ×1
Tail/brake light 12V, 5 W/21 W ×1
Indicator light:
Neutral 12V, 3.4 W ×1
Reverse 12V, 3.4 W ×1
Fuse: 5A
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