weight YAMAHA GRIZZLY 450 2012 User Guide

7-18
7

Shift your weight to the uphill side of the
ATV.
Never attempt to turn the ATV around on any
hill until you have mastered the turning tech-
nique as described in the Owner’s Manual on
level ground. Be very careful when turning
on any hill.Traversing a sloping surface on your ATV requires
you to properly position your weight to maintain
proper balance. Be sure that you have learned the
basic riding skills on flat ground before attempting
to cross a sloping surface. Avoid slopes with slip-
pery surfaces or rough terrain that may upset your
balance.
As you travel across a slope, lean your body in the
uphill direction. It may be necessary to correct the
steering when riding on loose surfaces by pointing
the front wheels slightly uphill. When riding on
slopes, be sure not to make sharp turns either up
or down hill.
If your ATV does begin to tip over, gradually steer
in the downhill direction if there are no obstacles in
your path. As you regain proper balance, gradually
steer again in the direction you wish to travel. CROSSING THROUGH SHALLOW WATER
WARNING
EWB01641Operating this vehicle through deep or fast-
flowing water can lead to loss of control or an
overturn. To reduce your risk of drowning or
other injuries, use care when crossing through
water. Never operate this ATV water deeper
than the depth specified in your Owner
’s Man-
ual, as tires may float, increasing the risk of an
overturn.
U1CT61E0.book Page 18 Wednesday, April 20, 2011 6:36 PM

7-22
7

Learn to safely control skidding or sliding by
practicing at low speeds and on level,
smooth terrain.
On extremely slippery surfaces, such as ice,
go slowly and be very cautious in order to re-
duce the chance of skidding or sliding out of
control.Care should be used when riding on loose or slip-
pery surfaces since the ATV may slide. If unex-
pected and uncorrected, sliding could lead to an
accident.
To reduce the tendency for the front wheels to slide
in loose or slippery conditions, positioning your
weight over the front wheels will sometimes help.If the rear wheels of your ATV start to slide side-
ways, control can usually be regained (if there is
room to do so) by steering in the direction of the
slide. Applying the brakes or accelerating is not
recommended until you have corrected the slide.
With practice, over a period of time, skill at con-
trolled sliding can be developed. The terrain
should be chosen carefully before attempting such
maneuvers, since both stability and control are re-
duced. Bear in mind that sliding maneuvers should
always be avoided on extremely slippery surfaces
such as ice, since all control may be lost.U1CT61E0.book Page 22 Wednesday, April 20, 2011 6:36 PM

7-23
7
WHAT TO DO IF...
This section is designed to be a reference guide
only. Be sure to read each section on riding tech-
niques completely.
WHAT TO DO...

If your ATV doesn
’t turn when you want it to:
Bring the ATV to a stop and practice the turning
maneuvers again. Be sure you are putting your
weight on the footboard to the outside of the
turn. Position your weight over the front wheels
for better control. (See page 7-12.)
If your ATV begins to tip while turning:
Lean more into the turn to regain balance. If nec-
essary, gradually let off the throttle and/or steer
to the outside of the turn. (See page 7-12.)
If your ATV starts to slide sideways:
Steer in the direction of the slide if you have the
room. Applying the brakes or accelerating is not
recommended until you have corrected the
slide. (See page 7-21.)
If your ATV can’ t make it up a hill you are trying
to climb:
Turn the ATV around if you still have forward
speed. If not, stop, dismount on the uphill side of
the ATV and physically turn the ATV around. If
the ATV starts to slip backwards, DO NOT USE THE REAR BRAKE IF THE ATV IS IN “
2WD” –
the ATV may tip over on top of you. Dismount
the ATV on the uphill side. (See page 7-13.)

If your ATV is traversing a sloping surface:
Be sure to ride with your weight positioned to-
wards the uphill side of the ATV to maintain
proper balance. If the ATV starts to tip, steer
down the hill (if there are no obstacles in your
way) to regain balance. If you discover that the
ATV is going to tip over, dismount on the uphill
side. (See page 7-17.)
If your ATV encounters shallow water:
Ride slowly and carefully through slow moving
water, watching for obstacles. Be sure to let wa-
ter drain from the ATV and CHECK YOUR
BRAKES FOR PROPER OPERATION when
you come out of the water. Do not continue to
ride your ATV until you have regained adequate
braking ability. (See page 7-18.)
U1CT61E0.book Page 23 Wednesday, April 20, 2011 6:36 PM

10-1
10
EBU25961
SPECIFICATIONS
Dimensions:Overall length:1993 mm (78.5 in)
Overall width: 1093 mm (43.0 in)
Overall height:
1120 mm (44.1 in)
Seat height: 840 mm (33.1 in)
Wheelbase: 1233 mm (48.5 in)
Ground clearance:
245 mm (9.6 in)
Minimum turning radius: 3000 mm (118 in)Weight:With oil and fuel:
YFM450FAPB 287.0 kg (633 lb)
YFM45FGPB (panel wheel model) 281.0 kg (619 lb)
YFM45FGPB (cast wheel model) 284.0 kg (626 lb)
YFM45FGPHB 281.0 kg (619 lb)Noise and vibration level:Noise level (77/311/EEC):YFM45FGPB 78.3 dB(A)
YFM45FGPHB 78.3 dB(A)
Vibration on seat (EN1032, ISO5008): YFM45FGPB 0.6 m/s ²
YFM45FGPHB 0.6 m/s ² Vibration on handlebar (EN1032, ISO5008):
YFM45FGPB Will not exceed 2.5 m/s ²
YFM45FGPHB Will not exceed 2.5 m/s ²
Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement: Forward-inclined single cylinder
Displacement:
421 cm ³
Bore × stroke:
84.5 × 75.0 mm (3.33 × 2.95 in)
Compression ratio: 10.00 : 1
Starting system:
Electric starter
Lubrication system: Wet sumpEngine oil:Recommended brand:
YAMALUBE
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10-3
10
Clutch:Clutch type:Wet, centrifugal automaticTransmission:Primary reduction system:V-belt
Secondary reduction system: Shaft drive
Secondary reduction ratio:
39/24 × 24/18 × 33/9 (7.944)
Transmission type: V-belt automatic
Operation: Left hand operation
Reverse gear:
29/17 (1.706)
Low range: 45/16 (2.813)
High range: 38/23 (1.652)Chassis:Frame type:Steel tube frame
Caster angle: 2.5 °
Trail:
8.5 mm (0.33 in)Front tire:Type:Tubeless Size:
AT25 x 8-12
Manufacturer/model: YFM450FAPB CHENG SHIN/C-828
YFM45FGPB MAXXIS/MU13
YFM45FGPHB MAXXIS/MU13
Rear tire:Type:Tubeless
Size:
AT25 x 10-12
Manufacturer/model: YFM450FAPB CHENG SHIN/C-828
YFM45FGPB MAXXIS/MU14
YFM45FGPHB MAXXIS/MU14Loading:Maximum loading limit:210.0 kg (463 lb)
(Total weight of rider, cargo, accessories, and tongue)Tire air pressure (measured on cold tires):Recommended:Front: 25.0 kPa (0.250 kgf/cm ², 3.6 psi)
Rear: 25.0 kPa (0.250 kgf/cm ², 3.6 psi)
Minimum:
Front: 22.0 kPa (0.220 kgf/cm ², 3.2 psi)
Rear:
22.0 kPa (0.220 kgf/cm ², 3.2 psi)
U1CT61E0.book Page 3 Wednesday, April 20, 2011 6:36 PM