2004 YAMAHA GRIZZLY 125 engine

6-17
NOTE:
If the drive select lever is shifted into reverse
while the engine is running, the engine will stop
unless the parking brake or rear brake lever is
applied.
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Improper operation in reverse could make
you hit an obstacle or person behind you,
resulting in serious injury. When you shift
into reverse, make sure there are no obsta-
cles or people behind you. When it is safe to
proceed, go slowly.
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6-19
EBU02091
Engine break-in
There is never a more important period in the
life of your machine than the period between
zero and 20 hours.
For this reason, we ask that you carefully read
the following material. Because the engine is
brand new, you must not put an excessive load
on it for the first several hours of running. During
the first 20 hours, the various parts in the engine
wear and polish themselves to the correct oper-
ating clearances.
During this period, prolonged full throttle opera-
tion or any condition which might result in exces-
sive engine heating must be avoided. However,
momentary (2–3 seconds maximum) full throttle
operation under load does not harm the engine.
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6-21
Each full throttle acceleration sequence should
be followed with a substantial rest period for the
engine by cruising at lower r/min so the engine
can rid itself of the temporary build up of heat.
If any abnormality is noticed during this period,
consult a Yamaha dealer.
0–10 hours:
8Avoid continuous operation above half throt-
tle. Allow a cooling off period of five to ten
minutes after every hour of operation. Vary
the speed of the machine from time to time.
Do not operate it at one set throttle position.
10–20 hours:
8Avoid prolonged operation above 3/4 throt-
tle. Rev the machine freely through the
gears but do not use full throttle at any time.
After break-in:
8Avoid prolonged full throttle operation. Vary
speeds occasionally.
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6-23
EBU00211
Parking
When parking, stop the engine and shift into
neutral. Turn the fuel cock to “OFF” and apply
the parking brake.
1
1. Locked position1. Verrouillé1. Posición de bloqueada
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6-25
EBU00216
Parking on a slope
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Avoid parking on hills or other inclines.
Parking 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 easily.
1. Bring the machine to a stop by applying the
brakes.
2. Stop the engine.
3. With the rear brake applied, apply the park-
ing brake.
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<16
7-7
Riding your ATV requires skills acquired
through practice over a period of time.
Take the time to learn the basic techniques well
before attempting more difficult maneuvers.
Not recommended for children under 16
years of age.
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A child under 16 should never operate an
ATV with engine size greater than 90cc. Use
by children of ATVs that are not recommend-
ed for their age can lead to severe injury or
death of the child.
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7-37
Select a large, flat area off-road to become
familiar with your ATV. Make sure that this area
is free of obstacles and other riders. You should
practice control of the throttle, brakes, shifting
procedures, and turning techniques in this area
before trying more difficult terrain. Always avoid
riding on paved surfaces: the ATV is designed
for off-road use only, and handling maneuvers
are more difficult to perform on pavement.
Set the parking brake and follow the instruction
on page 6-3 to start the engine. Once it has
warmed up you are ready to begin riding your
ATV. Remember that the engine and exhaust
pipe will be hot when riding and afterwards; do
not allow skin or clothing to come in contact with
these components.
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7-39
With the engine idling, return the starter knob to
the closed position and shift the drive select
lever into the forward position. Then release the
parking brake. 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 con-
trol. Avoid higher speeds until you are thorough-
ly familiar with the operation of your ATV.
When slowing down or stopping, release the
throttle and apply the brakes smoothly and
evenly. Improper use of the brakes can cause
the tires to lose traction, reducing control and
increasing the possibility of an accident.
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