warning YAMAHA YFM660R 2001 Repair Manual

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EBU00570
Cable inspection and lubrication
WARNING
Inspect cables frequently and replace if dam-
aged. Corrosion can result when the outer
covering of control cables becomes damaged.
Cables can also become frayed or kinked. Op-
eration of controls could be restricted, which
could cause an accident or injury.
Lubricate the inner cables and the cable ends.
If the cables do not operate smoothly, ask a
Yamaha dealer to replace them.
EBU00737
Brake and shift pedal/brake and clutch lever
lubrication
Lubricate the pivoting parts of each lever and
pedal.Recommended lubricant:
Engine oil
Recommended lubricant:
Lithium-soap-based grease
(all-purpose grease)

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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 wa-
ter or milk. Follow with milk of magnesia,
beaten egg or vegetable oil. Call a physi-
cian 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 ig-
nition away. Ventilate when charging or using
in an enclosed space. Always shield your eyes
when working near batteries. KEEP OUT OF
REACH OF CHILDREN.

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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 speci-
fied amperage. Then turn on the switches.
If the fuse immediately blows again, con-
sult 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 elec-
trical 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

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1. Bulb holder
1. Fixation d’ampoule
1. Portabombillas
1. Bulb 2. Bulb holder
1. Ampoule 2. Fixation d’ampoule
1. Bonbilla 2. Portabombillas
7. Push the bulb holder inward, turn it coun-
terclockwise and remove the defective
bulb.
WARNING
The headlight bulb is hot when it is on and im-
mediately after it is turned off. Wait for the
bulb to cool down before touching or remov-
ing it. You can be burned, or a fire could start if
the bulb touches something flammable.
8. Put a new bulb into position and secure it
in place with the bulb holder.
9. Install the bulb holder cover.
CAUTION:
Make sure the bulb holder cover is securely fit-
ted over the bulb holder and seated against
the reflector.
10. Align the projections with the holders, in-
stall the headlight unit into the case, and
install the screw.
11. Install the headlight cover in the original
position, and then install the screw.

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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 igni-
tion 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 genu-
ine 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.
WARNING
Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe inju-
ry or property damage. Make sure there are no
open flames or sparks in the area, including pi-
lot lights from water heaters or furnaces.

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Engine overheating
NOTE:
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.

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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 protective finish. When finished,
start the engine and let it idle for several
minutes.
WARNING
Wet brakes may have reduced stopping abili-
ty, 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.

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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:
Main fuse 20 AMODEL YFM660R