warning YAMAHA YFM660R 2004 Repair Manual

8-105
WARNING
Battery electrolyte is poisonous and danger-
ous, causing severe burns, etc. It contains sul-
furic 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, beat-
en egg or vegetable oil. Call a physician
immediately.


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 us-
ing in an enclosed space. Always shield your
eyes when working near batteries. KEEP OUT
OF REACH OF CHILDREN.
U5LP63.book Page 105 Monday, March 10, 2003 2:06 PM

8-109 1. Fuse 2. Spare fuse
1. Fusible 2. Fusible de rechange
1. Fusible 2. Fusible de repuesto
EBU00391
Fuse replacement
1. The fuse case is located under the seat.
2. If the fuse is blown, turn off the main switch
and install a new fuse of the specified amper-
age. Then turn on the switches. If the fuse im-
mediately blows again, consult a Yamaha
dealer.
WARNING
Always use a fuse of the specified rating. Nev-
er use a material in place of the proper fuse. An
improper fuse can cause damage to the electri-
cal system which could lead to a fire. CAUTION:
To prevent accidental short-circuiting, turn off
the main switch when checking or replacing a
fuse. Specified fuse: 20 A
U5LP63.book Page 109 Monday, March 10, 2003 2:06 PM

8-115 1. Headlight bulb holder cover
1. Cache de la fixation d’ampoule de phare
1. Cubierta del portabombillas del faro
1. Headlight bulb holder
1. Fixation d’ampoule de phare
1. Portabombillas del faro
6. Remove the headlight bulb holder cover.
7. Push the headlight bulb holder inward, turn it
counterclockwise and remove the defective
bulb.
WARNING
_ A headlight bulb is hot when it is on and imme-
diately after it is turned off. Wait for the bulb to
cool down before touching or removing it. You
can be burned, or a fire could start if the bulb
touches something flammable. _
U5LP63.book Page 115 Monday, March 10, 2003 2:06 PM

8-123
EBU00413
Troubleshooting
Although Yamaha machines receive a rigid in-
spection 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 pow-
er. The troubleshooting chart describes a quick,
easy procedure for making checks. If your ma-
chine requires any repair, take it to a Yamaha
dealer.
The skilled technicians at a Yamaha dealership
have the tools, experience, and know-how to prop-
erly service your machine. Use only genuine
Yamaha parts on your machine. Imitation parts
may look like Yamaha parts, but they are often in-
ferior. Consequently, they have a shorter service
life and can lead to expensive repair bills.
WARNING
Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe in-
jury or property damage. Make sure there are
no open flames or sparks in the area, including
pilot lights from water heaters or furnaces.
U5LP63.book Page 123 Monday, March 10, 2003 2:06 PM

8-126
Engine overheatingNOTE:If it is difficult to get the recommended coolant, tap water can be temporarily used, provided that it is
changed to the recommended coolant as soon as possible.
WARNING
Wait for the engine and radiator to cool before removing the radiator cap. You could be burned by
hot fluid and steam blown out under pressure. Always put a thick rag over the cap when opening.
Allow any remaining pressure to escape before completely removing the cap. Wait until the
engine has cooled.
Check the coolant level in the
reservoir tank and/or radiator.
Level is OK.Level is low, check the
cooling system for leakage.
No
leakage.Leakage.
Ask a Yamaha dealer to inspect
and repair the cooling system.Add coolant. (See NOTE.)
Restart the engine. If the engine overheats again, ask a
Yamaha dealer to inspect and/or repair the cooling system.
U5LP63.book Page 126 Monday, March 10, 2003 2:06 PM

9-5
8. Automotive type wax may be applied to all
painted and chrome plated surfaces. Avoid
combination cleaner-waxes. Many contain
abrasives which may mar the paint or protec-
tive finish. When finished, start the engine
and let it idle for several minutes.
WARNING
Wet brakes may have reduced stopping ability,
increasing the chance of an accident. Test the
brakes after washing. Apply the brakes several
times at slow speeds to let friction dry out the
linings.
U5LP63.book Page 5 Monday, March 10, 2003 2:06 PM

10-5
Wheel travel:
Front
Rear230 mm
220 mm
Electrical:
Ignition system
Generator system
Battery type/voltage capacityDC-C.D.I.
A.C. magneto
YTX14-BS/12 V, 12 Ah
Headlight type: Krypton bulb
Bulb voltage, wattage
× quantity:
Headlight
Tail/brake light
Indicator/warning lights:
Neutral
Reverse
Coolant temperature12 V, 30 W/30 W
× 2
12 V, 5 W/21 W
× 1
12 V, 1.7 W
× 1
12 V, 1.7 W
× 1
12 V, 1.7 W
× 1
Fuse: 20 AMODEL YFM660R
U5LP63.book Page 5 Monday, March 10, 2003 2:06 PM