engine YAMAHA GRIZZLY 660 2006 User Guide

4-35
NOTE:_

When the switch is set to “LOCK”, the differ-
ential gear lock indicator light will flash until
the differential gear is locked.


When the indicator light is flashing, turning
the handlebar back and forth will help the dif-
ferential gear lock to engage.


Riding before the differential gear lock is
properly engaged (e.g., when the indicator
light is flashing) will cause the engine speed
to be limited until engagement is complete.


When the ATV is in 4WD-LOCK, the maxi-
mum traveling speed is limited to 35 km/h.
However, if conditions require full engine
power to be available, push and hold the
override switch to disable the 4WD-LOCK
speed limiter. (See pages 4-23–4-25 for a de-
tailed explanation of this switch.)
_
U2C660.book Page 35 Monday, April 11, 2005 10:29 AM

4-37 1. Throttle lever
1. Levier d’accélération
1. Palanca de aceleración
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Throttle lever
Once the engine is running, movement of the
throttle lever will increase the engine speed.
Regulate the speed of the machine by varying the
throttle position. Because the throttle is spring-
loaded, the machine will decelerate, and the en-
gine will return to an idle any time the hand is re-
moved from the throttle lever.
Before starting the engine, check the throttle to be
sure it is operating smoothly. Make sure it returns
to the idle position as soon as the lever is released.
WARNING
Malfunction of the throttle could make it diffi-
cult to speed up or slow down when you need
to. This could cause an accident. Check the
operation of the throttle lever before you start
the engine. If the throttle does not work
smoothly, check for the cause. Correct the
problem before riding the ATV or consult a
Yamaha dealer.
U2C660.book Page 37 Monday, April 11, 2005 10:29 AM

4-39 1. Locknut 2. Adjusting screw
a. No more than 12 mm
1. Contre-écrou 2. Vis de réglage
a. 12 mm maximum
1. Contratuerca 2. Tornillo de ajuste
a. 12 mm como máximo
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Speed limiter
The speed limiter keeps the throttle from fully
opening, even when the throttle lever is pushed to
the maximum. Turning in the adjusting screw limits
the maximum engine power available and de-
creases the maximum speed of the ATV.
WARNING
_ Improper adjustment of the speed limiter and
throttle could cause throttle cable damage or
improper throttle operation. You could lose
control, have an accident or be injured. Do not
turn the adjusting screw out more than 12 mm
or the throttle cable could be damaged. Always
make sure the throttle lever free play is adjust-
ed to 3–5 mm. See page 8-99. _
U2C660.book Page 39 Monday, April 11, 2005 10:29 AM

4-45 1. Drive select lever
1. Levier de présélection
1. Palanca de selección de marcha
1. Recoil starter
1. Lanceur à réenroulement
1. Arranque por tracción de cable
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Drive select lever
The drive select lever is used to shift your machine
into the low, high, neutral, reverse and park posi-
tions. (Refer to pages 6-11–6-15 for the drive se-
lect lever operation.)
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Recoil starter
Firmly grasp the handle and pull slightly until en-
gagement can be felt. Then pull forcefully, being
careful not to pull the rope all the way out.
WARNING
_ Always shift the drive select lever to “P” park
position before starting the engine, otherwise
the ATV could start to move unexpectedly,
which could cause an accident. _
U2C660.book Page 45 Monday, April 11, 2005 10:29 AM

4-49 1. Arrow mark pointing to “OFF”
1. Flèche dirigée vers “OFF”
1. Marca de la flecha señalando a “OFF”
OFF position
Robinet fermé
Posición OFF1. Arrow mark pointing to “ON”
1. Flèche dirigée vers “ON”
1. Marca de la flecha señalando a “ON”ON position
Robinet ouvert
Posición ON
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Fuel cock
The fuel cock supplies fuel from the fuel tank to the
carburetor.
The fuel cock has three positions.
OFF: With the lever in this position fuel will not
flow. Always turn the lever to this position
when the engine is not running.
ON: With the lever in this position, fuel flows to
the carburetor. Normal riding is done with
the lever in this position.
U2C660.book Page 49 Monday, April 11, 2005 10:29 AM

4-51 1. Arrow mark pointing to “RES”
1. Flèche dirigée vers “RES”
1. Marca de la flecha señalando a “RES”
RES position
Réserve
Posición RES1. Starter (choke) “”
1. Starter (enrichisseur) “”
1. Starter (choke) “”
RES: This indicates reserve. If you run out of fuel
while riding, turn the lever to this position.
THEN FILL THE FUEL TANK AT THE
FIRST OPPORTUNITY. After refuelling, re-
turn the fuel cock lever to the “ON” position.
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Starter (choke) “”
Starting a cold engine requires a richer air-fuel
mixture. A separate starter circuit supplies this
mixture.
Move in direction
a to turn on the starter (choke).
Move in direction
b to turn off the starter (choke).
Refer to “Starting a cold engine” for proper opera-
tion. (See pages 6-3–6-7.)
U2C660.book Page 51 Monday, April 11, 2005 10:29 AM

4-61 1. Auxiliary DC jack cap
1. Capuchon de la prise pour accessoires
1. Tapa de la toma de CC auxiliar
1. Auxiliary DC jack
1. Prise pour accessoires
1. Toma de CC auxiliar
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Auxiliary DC jack
The auxiliary DC jack is located at the front right
side of the ATV. The auxiliary DC jack can be used
for suitable work lights, radios, etc. The auxiliary
DC jack should only be used when the engine is
running.
1. Set the light switch to “OFF”.
2. Start the engine. (See pages 6-3–6-9.)
3. Open the auxiliary DC jack cap, and then in-
sert the accessory power plug into the jack.
4. When the auxiliary DC jack is not being used,
cover it with the cap. Maximum rated capacity for the auxiliary DC
jack:
DC 12 V, 120 W (10 A)
U2C660.book Page 61 Monday, April 11, 2005 10:29 AM

4-63
CAUTION:_

Do not use accessories requiring more
than the above maximum capacity. This
may overload the circuit and cause the
fuse to blow.


If accessories are used without the engine
running or with the headlights turned on,
the battery will lose its charge and engine
starting may become difficult.


Do not use an automotive cigarette lighter
or other accessories with a plug that gets
hot because the jack can be damaged.
_
U2C660.book Page 63 Monday, April 11, 2005 10:29 AM

5-1
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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,
8-101–8-115
FuelCheck fuel level.
Fill with fuel if necessary.5-11–5-13
Engine oilCheck oil level.
Fill with oil if necessary.5-15,
8-39–8-51
Coolant reservoirCheck coolant level in reservoir.
Fill with coolant if necessary.5-19–5-21,
8-63–8-73
Final gear oil/
Differential gear oilCheck for leakage.5-17–5-19,
8-53–8-61
ThrottleCheck for proper throttle cable operation and free play. 5-21, 8-99
Wheels and tiresCheck tire pressure, wear and damage.5-25–5-31,
8-123–8-125
Fittings and fastenersCheck all fittings and fasteners. 5-21
Lights and switchesCheck for proper operation. 5-23, 8-137–8-143
Axle bootsCheck for damage. 8-75
U2C660.book Page 1 Monday, April 11, 2005 10:29 AM

5-11
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Fuel
Make sure there is sufficient gasoline in the tank.NOTE:_ (for Europe only)
If knocking or pinging occurs, use a different brand
of gasoline or higher octane grade. _CAUTION:_ Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to internal
engine parts, such as the valves and piston
rings, as well as to the exhaust system. _
Recommended fuel:
Unleaded gasoline only
For Europe: Regular unleaded gasoline
only with a research octane number of 91
or higher
Fuel tank capacity:
Total: 20 L
Reserve: 3.5 L
U2C660.book Page 11 Monday, April 11, 2005 10:29 AM