2004 YAMAHA GRIZZLY 125 engine

4-7
NOTE:
If the starter switch is pushed with the main
switch “ON” and the engine stop switch “OFF”,
the starter motor will be activated but the engine
will not start. To start the engine, be sure to
position the engine stop switch at “RUN”.
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Light switch “LIGHTS”
Set the switch to the “LO” position to turn on the
low beam and the taillight.
Set the switch to the “HI” position to turn on the
high beam and the taillight.
Set the switch to the “OFF” position to turn off all
of the lights.
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4-9
cC
Do not use the headlights with the engine
turned off for an extended period of time,
otherwise the battery may discharge to the
point that the starter motor will not operate
properly. If this should happen, remove the
battery and recharge it.
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Horn switch “*”
Press the switch to sound the horn.
1
1. Horn switch
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4-11
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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 engine will return to an idle any time the
hand is removed 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.
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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.
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1. Throttle lever1. Levier d’accélérateur1. Palanca del aceleración
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4-13
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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
decreases the maximum speed of the ATV.
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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 dam-
aged. Always make sure the throttle lever
free play is adjusted to 3.0–5.0 mm. See page
8-45.
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1. Adjusting screw 2. Locknut
a. No more than 12 mm
1. Vis de réglage 2. Contre-écrou
a. Pas plus que 12 mm
1. Tornillo de ajuste 2. Contratuerca
a. No más de 12 mm
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4-17
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Parking brake
Use the parking brake when you have to start
the engine or park the machine, especially on a
slope. Apply the rear brake lever and push down
the lock plate to apply the parking brake.
Squeeze the rear brake lever to release the
parking brake.
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8Always set the parking brake before start-
ing the engine. The ATV could start mov-
ing unexpectedly if the parking brake is
not applied. This could cause loss of con-
trol or a collision.
8Always be sure you have released the
parking brake before you begin to ride.
The brake could overheat if you ride the
ATV without releasing the parking brake.
You could lose braking performance
which could cause an accident. You could
also wear out the brakes prematurely.
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1. Lock plate1. Frein d’écrou1. Placa de bloqueo
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4-21
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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.
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, return the fuel cock lever to the
“ON” position.RES
OFF
ON
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4-23
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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 ato turn on the starter
(choke).
Move in direction bto turn off the starter
(choke).
Refer to “Starting a cold engine” for proper oper-
ation. (See page 6-3.)
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abA
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1. Fully open 2. Half open
3. Closed A. Starter (choke)
1. Plein course 2. Mi-course
3. Fermé A. Starter (choke)
1. Abre completamente 2. Semiabierto
3. Cerrado A. Starter (choke)
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5-1
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PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
Brakes• Check operation, condition and free play. 5-5 – 5-7,
• Adjust if necessary. 8-47 – 8-59
Fuel • Check fuel level.
• Fill with fuel if necessary.5-7 – 5-11
Engine oil and• Check oil level. 5-11 – 5-15,
final transmission oil• Fill with oil if necessary. 8-13 – 8-25
Drive chain• Check chain slack and condition.
5-15, 8-61 – 8-69
• Adjust if necessary.
Throttle• Check for proper throttle cable operation. 5-15
Wheels and tires• Check tire pressure, wear and damage. 5-19 – 5-25, 8-75
Fittings and fasteners• Check all fittings and fasteners. 5-15
Battery• Check fluid level.
5-17, 8-77 – 8-83
• Fill with distilled water if necessary.
Lights and switches• Check for proper operation. 5-17, 8-87 – 8-93
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