2008 YAMAHA GRIZZLY 660 Owners Manual

5-4
5
EBU19731Front and rear brakes Brake levers and brake pedal
Check that there is no free play in the front brake
lever. If there is free play, have a Yamaha dealer
check the brake system.
Check for correct free play in the rear brake le-
ver. If the free play is incorrect, adjust it. (See
page 8-42.)
Check for correct brake pedal height. If the pedal
height is incorrect, have a Yamaha dealer adjust
it.
Check the operation of the brake levers and
pedal. They should move smoothly and there
should be a firm feeling when the brakes are ap-
plied. If not, have a Yamaha dealer check the
brake system.
Brake fluid level
Check the brake fluid level. Add fluid if necessary.
(See page 8-39.)Brake fluid leakage
Check to see if any brake fluid is leaking out of the
pipe joints or brake fluid reservoirs. Apply the
brakes firmly for one minute. If a lever moves slow-
ly inward, there may be a leak in the brake system.
If there is any leakage, the brake system should be
checked by a Yamaha dealer.
Brake operation
Test the brakes at slow speed after starting out to
make sure they are working properly. If the brakes
do not provide proper braking performance, check
the brake pads for wear. (See page 8-38.)
WARNING
EWB00580Always check the brakes at the start of every
ride. Do not ride the ATV if you find any prob-
lem with the brakes or you could lose braking
ability, which could lead to an accident. If a
problem cannot be corrected by the adjust-
ment procedures provided in this manual, havea Yamaha dealer check for the cause.
Recommended brake fluid:
DOT 4
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5-5
5
EBU19761Throttle lever Check the operation of the throttle lever. It must
open smoothly and spring back to the idle position
when released. Have a Yamaha dealer correct if
necessary.EBU19791Tires
WARNING
EWB00601Use of improper tires on this ATV, or operation
of this ATV with improper or uneven tire pres-
sure, may cause loss of control, increasing
your risk of accident.
Pay attention to the following.
The tires listed below have been approved
by Yamaha Motor Co., Ltd. for this model.
Other tire combinations are not recommend-
ed.
Front:
Manufacturer/model:
CHENG SHIN/C828-4P (AUS)(NZL)
DUNLOP/KT131 (EUR)
Size:
AT25 x 8-12Type:
Tubeless
Rear:
Manufacturer/model:
CHENG SHIN/C828-4P (AUS)(NZL)
DUNLOP/KT135 (EUR)
Size:
AT25 x 10-12
Type:
Tubeless

The tires should be set to the recommended
pressure:
Recommended tire pressure:
Front:
35.0 kPa (5.0 psi) (0.350 kgf/cm²)
Rear:
30.0 kPa (4.3 psi) (0.300 kgf/cm²)
Check and adjust tire pressures when the
tires are cold.
Tire pressures must be equal on both
sides.
Tire pressure below the minimum speci-
fied could cause the tire to dislodge from
the rim under severe riding conditions.
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5-6
5 Minimum tire pressure:
Front:
32.0 kPa (4.6 psi) (0.320 kgf/cm²)
Rear:
27.0 kPa (3.9 psi) (0.270 kgf/cm²)
Use no more than the following pressures
when seating the tire beads.
Maximum tire seating pressure:
Front:
250 kPa (36 psi) (2.5 kgf/cm²)
Rear:
250 kPa (36 psi) (2.5 kgf/cm²)
Higher pressures and fast inflation may
cause a tire to burst. Inflate the tires very
slowly and carefully.EBU19820Measuring the tire pressure Use the low-pressure tire gauge.NOTE:The low-pressure tire gauge is included as stan-
dard equipment. Make two measurements of the
tire pressure and use the second reading. Dust or
dirt in the gauge could cause the first reading to beincorrect.Set the tire pressure when the tires are cold. Set
the tire pressures to the following specifications:
1. Low-pressure tire gauge
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5
EBU19830Tire wear limit Replace the tire when the tire groove decreases to
3 mm (0.12 in).
EBU19840Chassis fasteners Make sure that all nuts, bolts and screws are prop-
erly tightened.EBU19850Instruments, lights and switches Check that all instruments, lights and switches are
working properly. Correct if necessary. Recommended pressure:
Fro nt
35.0 kPa (5.0 psi) (0.350 kgf/cm²)
Rear
30.0 kPa (4.3 psi) (0.300 kgf/cm²)
Minimum:
Fro nt
32.0 kPa (4.6 psi) (0.320 kgf/cm²)
Rear
27.0 kPa (3.9 psi) (0.270 kgf/cm²)
Maximum:
Fro nt
38.0 kPa (5.5 psi) (0.380 kgf/cm²)
Rear
33.0 kPa (4.8 psi) (0.330 kgf/cm²)1. Tire wear limit
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6-1
6
EBU19880
OPERATION
EBU19900Read the Owner’s Manual carefully before riding
the ATV.
WARNING
EWB00630Read the Owner’s Manual carefully to become
familiar with all controls in order to help pre-
vent any loss of control, which could cause an
accident or injury. If there is a control or func-
tion you do not understand, ask your Yamahadealer.EBU20052Starting a cold engine
WARNING
EWB00640Always make sure all control cables work
smoothly before you begin riding in cold
weather. If the control cables are frozen or do
not work smoothly, you could be unable to
control the ATV, which could lead to an acci-dent or collision.
CAUTION:ECB00150See the “Engine break-in” section on page 6-5prior to operating the engine for the first time.
1. Turn the fuel cock to “ON”.
2. Turn the main switch to “ON” and the engine
stop switch to “”.
3. Shift the drive select lever into the neutral or
park position. The corresponding indicator
light should come on. If the indicator light does
not come on, have a Yamaha dealer check
the electrical circuit.NOTE:The engine can be started under the following con-
ditions:
The drive select lever is in the neutral or park po-
sition.
The rear brake lever is applied with the drive se-
lect lever in any position. However, it is recom-
mended to shift into the neutral or park positionbefore starting the engine.
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6-2
64. Use the starter (choke) in reference to the fig-
ure:
Position (1):
Cold engine start with ambient temperature
below 5 °C (40 °F).
Position (2):
Cold engine start with ambient temperature
between 0 °C (30 °F) and 30 °C (90 °F).
Position (3):
Cold engine start with ambient temperature
above 25 °C (80 °F).
Ambient temp./starter (choke) position5. Apply the rear brake lever.
6. Completely close the throttle lever and start
the engine by pushing the start switch.
NOTE:
If the engine fails to start, release the start
switch, then push it again. Pause a few seconds
before the next attempt. Each cranking should
be as short as possible to preserve battery ener-
gy. Do not crank the engine more than 10 sec-
onds on each attempt.
If the battery is discharged, pull the recoil starterto start the engine.
7. If the engine is started with the starter (choke)
in position (1), the starter (choke) should be
returned to position (2) to warm up the engine.
If the engine is started with the starter (choke)
in position (2), keep the starter (choke) in this
position to warm up the engine.CAUTION:ECB00160For maximum engine life, always warm the en-
gine up before starting off. Never acceleratehard when the engine is cold!
1. Fully open
2. Half open
3. Closed
4. Starter (choke)U23D60E0.book Page 2 Thursday, March 15, 2007 7:59 PM

6-3
6 8. Continue warming up the engine until it idles
smoothly, then return the starter (choke) to
position (3) before riding.
NOTE:The engine is warm when it responds normally tothe throttle with the starter (choke) turned off.EBU20291Starting a warm engine Follow the same procedure as for starting a cold
engine, with the exception that the starter (choke)
is not required when the engine is warm. Instead,
start the engine with the throttle slightly open.EBU20440Operating the drive select lever and
driving in reverse CAUTION:ECB00170Before shifting, stop the ATV, otherwise thetransmission may be damaged.
Shifting: Neutral to High-range and High-range
to Low-range
1. Bring the ATV to a complete stop.2. Apply the brake pedal, and then shift by mov-
ing the drive select lever along the shift guide.
NOTE:Make sure that the drive select lever is completelyshifted into position.
3. Release the brake pedal, and then open the
throttle lever gradually.1. Drive select lever
2. L (Low-range)
3. H (High-range)
4. N (Neutral)
5. R (Reverse)
6. P (Park)
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6-4
6Shifting: Neutral to Reverse and Reverse to
Park
NOTE:The drive select lever cannot be shifted into or fromreverse or park without applying the brake pedal.
1. Bring the ATV to a complete stop.
2. Apply the brake pedal.
3. Shift from neutral to reverse or from reverse to
park and vice versa by moving the drive select
lever along the shift guide.
NOTE:
When in reverse, the reverse indicator light
should come on. If the indicator light does not
come on, have a Yamaha dealer check the elec-
trical circuit.
Due to the synchronizing mechanism in the en-
gine, the indicator light may not come on until theATV starts moving.1. Drive select lever
2. L (Low-range)
3. H (High-range)
4. N (Neutral)
5. R (Reverse)
6. P (Park)
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