2004 YAMAHA GRIZZLY 660 wheel

4-31 1. Differential gear lock switch “LOCK”/“4WD”
2. Lever
1. Contacteur de blocage du différentiel “LOCK”/“4WD”
2. Levier
1. Selector de bloqueo del diferencial “LOCK”/“4WD”
2. Palanca
Differential gear lock switch “LOCK”/“4WD”
To lock the differential gear in 4WD, make sure the
on-command four-wheel-drive switch is set to
“4WD”, stop the ATV, move the lever to position
b, and then set the switch to “LOCK”. When the
differential gear is locked, the differential gear lock
indicator (“DIFF.LOCK”) light will come on along
with the indicator “” in the speedometer unit
display.
To release the differential gear lock, stop the ATV
and set the switch to “4WD”.
WARNING
_ Always ride at a slow speed when the ATV is in
4WD-LOCK, and allow extra time and distance
for maneuvers.
All wheels turn at the same speed when the dif-
ferential is locked, so it takes more effort to
turn the ATV. The amount of effort is more the
faster you go. You may lose control and have
an accident if you cannot make a sharp
enough turn for the speed you are traveling. _
DIFF.
LOCK
EE.book Page 31 Tuesday, April 1, 2003 12:23 PM

4-55
EBU01312
Front and rear shock absorber adjustment
The spring preload can be adjusted to suit the rid-
er’s weight and riding conditions.NOTE:_ When adjusting the rear shock absorbers, the rear
wheels need to be removed. (See pages 8-113–
8-115 for removal and installation procedures.) _Adjust the spring preload as follows.
To increase the spring preload, turn the adjusting
ring in direction
a.
To decrease the spring preload, turn the adjusting
ring in direction
b.NOTE:_ A special wrench can be obtained at a Yamaha
dealer to make this adjustment. _
Standard position: B
A - Minimum (soft)
E - Maximum (hard)
1. Spring preload adjusting ring
2. Position indicator
1. Anneau de réglage de la précontrainte de ressort
2. Indicateur de position
1. Anillo de ajuste de la precarga del resorte
2. Indicador de posiciónEE.book Page 55 Tuesday, April 1, 2003 12:23 PM

5-1
EBU00113
PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
BrakesCheck operation, free play, fluid level and fluid leakage.
Fill with DOT 4 brake fluid if necessary.5-7–5-9,
8-91–8-105
FuelCheck fuel level.
Fill with fuel if necessary.5-11–5-13
Engine oilCheck oil level.
Fill with oil if necessary.5-15,
8-33–8-45
Coolant reservoirCheck coolant level.
Fill with coolant if necessary.8-57–8-67
Final gear oil/
Differential gear oilCheck for leakage.5-17–5-19,
8-47–8-55
ThrottleCheck for proper throttle cable operation. 5-21, 8-89
Wheels and tiresCheck tire pressure, wear and damage.5-25–5-31,
8-113–8-115
Fittings and fastenersCheck all fittings and fasteners. 5-21
Lights and switchesCheck for proper operation. 5-23, 8-127–8-131
Axle bootsCheck for damage. 8-69
EE.book Page 1 Tuesday, April 1, 2003 12:23 PM

6-21
EBU00676
Parking on a slope
WARNING
Avoid parking on hills or other inclines. Park-
ing on a hill or other incline could cause the
ATV to roll out of control, increasing the
chance of an accident. If you must park on an
incline, place the machine transversely across
the incline, apply the parking brake, and block
the front and rear wheels with rocks or other
objects. Do not park the ATV at all on hills that
are so steep you could not walk up them easi-
ly.1. Bring the machine to a stop by applying the
brakes.
2. Stop the engine.
3. With the rear brake applied, shift the drive se-
lect lever to the park position.
EE.book Page 21 Tuesday, April 1, 2003 12:23 PM

7-21
During operation
Always keep your feet on the footboards during
operation. Otherwise your feet may contact the
rear wheels.
WARNING
_ Always keep both hands on the handlebars
and both feet on the footboards of your ATV
during operation. Removing even one hand or
foot can reduce your ability to control the ATV
or could cause you to lose your balance and
fall off of the ATV. If you remove a foot from a
footboard, your foot or leg may come into con-
tact with the rear wheels, which could injure
you or cause an accident. _Avoid wheelies and jumping. You may lose control
of the ATV or overturn.
WARNING
_ Never attempt stunts, such as wheelies or
jumps. Don’t try to show off. _
EE.book Page 21 Tuesday, April 1, 2003 12:23 PM

7-37
With the engine idling, shift the drive select lever to
the low position “L” or the high position “H”. Apply
the throttle slowly and smoothly. The centrifugal
clutch will engage and you will start to accelerate.
If the throttle is applied too abruptly, the front
wheels may lift off the ground resulting in a loss of
directional control. Avoid higher speeds until you
are thoroughly familiar with the operation of your
ATV.
When slowing down or stopping, release the throt-
tle and apply the brakes smoothly and evenly. Im-
proper use of the brakes can cause the tires to
lose traction, reducing control and increasing the
possibility of an accident.CAUTION:_ Do not shift from drive position low “L” to high
“H” or vice versa without coming to a com-
plete stop. Damage to the engine or drive train
may occur. _
EE.book Page 37 Tuesday, April 1, 2003 12:23 PM

7-39
TURNING YOUR ATV
To achieve maximum traction while riding off-road
in 2WD or 4WD, the two rear wheels are mounted
solidly on one axle and turn together at the same
speed. Furthermore, when riding in 4WD-LOCK
(“DIFF.LOCK”), the front wheels also turn together
at the same speed. Therefore, unless the wheel on
the inside of the turn is allowed to slip or lose some
traction, the ATV will resist turning. A special turn-
ing technique must be used to allow the ATV to
make turns quickly and easily. It is essential that
this skill be learned first at low speed.
WARNING
_ Always follow proper procedures for turning
as described in this Owner’s Manual. Practice
turning at low speeds before attempting to turn
at faster speeds. Do not turn at speeds too fast
for your skills or the conditions. Operate at a
slow speed and allow extra time and distance
for maneuvers when in 4WD-LOCK
(“DIFF.LOCK”). _
EE.book Page 39 Tuesday, April 1, 2003 12:23 PM

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. S’appuyer sur le repose-pied extérieur.
1. Inclínese hacia el interior del giro.
2. Descanse su peso en el descansapie 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.
EE.book Page 41 Tuesday, April 1, 2003 12:23 PM