wheel YAMAHA YFM660R 2002 Manuale de Empleo (in Spanish)

7-41 1. Lean towards inside of turn.
2. Support your weight on the outer footboard.
1. Se pencher vers l’intérieur du virage.
2. Faire reposer son poids sur le repose-pied extérieur.
1. Inclínese hacia el interior del giro.
2. Apoye su peso en la estribera del lado exterior
As you approach a curve, slow down and begin to
turn the handlebars in the desired direction. As
you do so, put your weight on the footboard to the
outside of the turn (opposite your desired direc-
tion) and lean your upper body into the turn. Use
the throttle to maintain an even speed through the
turn. This maneuver will let the wheel on the inside
of the turn slip slightly, allowing the ATV to make
the turn properly.
This procedure should be practiced at slow speed
many times in a large off-road area with no obsta-
cles. If an incorrect technique is used, your ATV
may continue to go straight. If the ATV doesn’t
turn, come to a stop and then practice the proce-
dure again. If the riding surface is slippery or loose,
it may help to position more of your weight over the
front wheels by moving forward on the seat. Once
you have learned this technique you should be
able to perform it at higher speeds or in tighter
curves.
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7-51
If your ATV has stalled or stopped and you believe
you can continue up the hill, restart carefully to
make sure you do not lift the front wheels which
could cause you to lose control. If you are unable
to continue up the hill, dismount the ATV on the
uphill side. Physically turn the ATV around and
then descend the hill.
If you start to roll backwards, DO NOT use the rear
brake to stop or try to put the ATV in gear. The
ATV could easily tip over backwards. Instead, dis-
mount the ATV immediately on the uphill side.
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7-59
CROSSING A SLOPE
Traversing a sloping surface on your ATV requires
you to properly position your weight to maintain
proper balance. Be sure that you have learned the
basic riding skills on flat ground before attempting
to cross a sloping surface. Avoid slopes with slip-
pery surfaces or rough terrain that may upset your
balance.
As you travel across a slope, lean your body in the
uphill direction. It may be necessary to correct the
steering when riding on loose surfaces by pointing
the front wheels slightly uphill. When riding on
slopes be sure not to make sharp turns either up or
down hill.
U5LP61.book Page 59 Monday, August 27, 2001 3:49 PM

7-69
SLIDING AND SKIDDING
Care should be used when riding on loose or slip-
pery surfaces since the ATV may slide. If unex-
pected and uncorrected, sliding could lead to an
accident.
To reduce the tendency for the front wheels to
slide in loose or slippery conditions, positioning
your weight over the front wheels will sometimes
help.
If the rear wheels of your ATV start to slide side-
ways, control can usually be regained (if there is
room to do so) by steering in the direction of the
slide. Applying the brakes or accelerating is not
recommended until you have corrected the slide.
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7-73
WHAT TO DO IF ...
This section is designed to be a reference guide
only. Be sure to read each section on riding tech-
niques completely.
WHAT TO DO ...

If your ATV doesn’t turn when you want it to:
Bring the ATV to a stop and practice the turning
maneuvers again. Be sure you are putting your
weight on the footboard to the outside of the
turn. Position your weight over the front wheels
for better control. (See pages 7-39 ~ 7-43.)


If your ATV begins to tip while turning:
Lean more into the turn to regain balance. If nec-
essary, gradually let off the throttle and/or steer to
the outside of the turn. (See pages 7-39 ~ 7-43.)


If your ATV starts to slide sideways:
Steer in the direction of the slide if you have the
room.
Applying the brakes or accelerating is not rec-
ommended until you have corrected the slide.
(See pages 7-69 ~ 7-71.)
U5LP61.book Page 73 Monday, August 27, 2001 3:49 PM

8-8 * It is recommended that these items be serviced by a Yamaha dealer.
** Lithium-soap-based grease
NOTE:

Recommended brake fluid: DOT4


Brake fluid replacement:
1. When disassembling the master cylinder or caliper, replace the brake fluid. Normally check the brake
fluid level and add fluid as required.
2. On the inner parts of the master cylinder and caliper, replace the oil seals every two years.
3. Replace the brake hoses every four years, or if cracked or damaged.
Clutch*•Check operation.
•Adjust if necessary.Wheels*•Check balance/damage/runout.
•Replace if necessary.Wheel bearings*•Check bearing assembly for looseness/damage.
•Replace if damaged.Steering system*•Check operation.
•Repair if damaged.
•Check toe-in.
•Adjust if necessary.Upper and lower arm
pivot and steering
shaft*•Lubricate every 6 months.**Rear arm pivot*•Lubricate every 6 months.**Fittings and fasteners*•Check all chassis fittings and fasteners.
•Correct if necessary.
ITEM ROUTINEINITIAL EVERY
1
month3
months6
months6
months1
year
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8-73
5. Screw in the adjusting bolt on the brake cali-
per by hand until it feels tight, then screw it
out 1/8 turn. Tighten the adjusting bolt locknut
to the specified torque.CAUTION:_ When tightening the locknut, hold the adjust-
ing bolt with a wrench so that the adjusting
bolt does not turn together with the locknut. _
WARNING
_ Operating with improperly adjusted brakes
could cause the brakes to malfunction, result-
ing in reduced braking performance. This
could increase the chance of a collision or ac-
cident. After adjusting the parking brake, block
the rear of the machine off the ground and spin
the rear wheels. Check to make sure there is
no brake drag. If brake drag is noticed, perform
the adjustment again. _
Tightening torque:
Locknut:
16 Nm (1.6 m·kgf)
U5LP61.book Page 73 Monday, August 27, 2001 3:49 PM

8-81 1. Upper wheel hub nut 2. Lower wheel hub nut
1.Écrou supérieur de moyeu de roue
2.Écrou inférieur de moyeu de roue
1. Tuerca superior del cubo de la rueda
2. Tuerca inferior del cubo de la rueda
1. Locknut (× 2) 2. Adjusting bolt (× 2)
3. Alignment marks (× 2)
1. Contre-écrou (× 2) 2. Boulon de réglage (× 2)
3. Repères d’alignement (× 2)
1. Contratuerca (× 2) 2. Perno de ajuste (× 2)
3. Marcas de alineación (× 2)
EBU01026
Drive chain slack adjustment
1. Loosen the rear wheel hub upper and lower
nuts.
2. Loosen the adjusting bolt locknuts on each
side of the swingarm. To tighten the drive
chain, turn the adjusting bolts in direction
a.
To loosen the drive chain, turn the adjusting
bolts in direction
b and push the wheels for-
ward. Turn each adjusting bolt exactly the
same amount to maintain correct axle align-
ment.
There are alignment marks on each side of
the swingarm and on the hub. Use them to
check for proper wheel axle alignment.
3. After adjusting, tighten the adjusting bolt lock-
nuts and the wheel hub nuts to the specified
torques.
Tightening torques:
Locknut:
16 Nm (1.6 m·kgf)
Upper wheel hub nut:
90 Nm (9.0 m·kgf)
Lower wheel hub nut:
90 Nm (9.0 m·kgf)
U5LP61.book Page 81 Monday, August 27, 2001 3:49 PM

8-95 1. Nut (× 4)
1.Écrou (× 4)
1. Tuerca (× 4)
Front
Avant
Delantera1. Nut (× 4)
1.Écrou (× 4)
1. Tuerca (× 4)Rear
Arrière
Trasera
EBU00373
Wheel removal
1. Elevate the wheel by placing a suitable stand
under the frame.
2. Remove the nuts from the wheel.
3. Remove the wheel assembly.
U5LP61.book Page 95 Monday, August 27, 2001 3:49 PM

8-97 1. Arrow mark
1. Flèche
1. Flecha
Front
Avant
Delantera1.“SIDE FACING OUTWARDS”
1. Inscription “SIDE FACING OUTWARDS”
1.“SIDE FACING OUTWARDS”Rear
Arrière
Trasera
EBU00782
Wheel installation
When installing a wheel, reverse the removal pro-
cedure.NOTE:

When installing a front wheel, the arrow mark
on the tire must point toward the rotating
direction of the wheel.


When installing a rear wheel, the wording on
the tire “SIDE FACING OUTWARDS” must be
facing outwards.
Tighten the wheel nuts to the specified torque.
Wheel nut torque:
Front: 45 Nm (4.5 m·kgf)
Rear: 45 Nm (4.5 m·kgf)
U5LP61.book Page 97 Monday, August 27, 2001 3:49 PM