Page 58 of 378
2-13
Always be careful when skidding or sliding.
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 reduce the chance of skidding or sliding out
of control.
Never operate an ATV in fast flowing water or
in water deeper than that recommended in this
manual. Remember that wet brakes may have
reduced stopping ability. Test your brakes after
leaving water. If necessary, apply them several
times to let friction dry out the linings.
Always be sure there are no obstacles or peo-
ple behind you when you operate in reverse.
When it is safe to proceed in reverse, go slowly.
Always use the size and type tires specified in
this manual.
Always maintain proper tire pressure as de-
scribed in this manual.
U4XE64.book Page 13 Thursday, May 30, 2002 1:49 PM
Page 130 of 378
5-21
EBU00158
Tires
Always use the recommended tires.
WARNING
Use 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.
1. The tires listed below have been approved
by Yamaha Motor Co., Ltd. for this model.
Other tire combinations are not recom-
mended.ACE-01EACE-01E
Manufacturer Size Type
FrontDUNLOP AT22
× 7-10 KT701
CHENG SHIN AT22
× 7-10 M905
RearDUNLOP AT22
× 10-10 KT705
CHENG SHIN AT22
× 10-10 M906
U4XE64.book Page 21 Thursday, May 30, 2002 1:49 PM
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7-15
WARNING
Always use the size and type tires specified in
the Owner’s Manual for this vehicle on
pages 5-21–5-23. Always maintain proper tire
pressure as described in the Owner’s Manual
on page 5-25. Use of improper tires on this
ATV, or operation of this ATV with improper or
uneven tire pressure, may cause loss of con-
trol, increasing your risk of an accident. Do not operate at speeds too fast for your
skills or the conditions.
WARNING
Always go at a speed that is proper for the ter-
rain, visibility and operating conditions, and
your experience. Operating this ATV at speeds
too fast for your skills or the conditions in-
creases your chances of losing control of the
ATV, which can result in an accident.
U4XE64.book Page 15 Thursday, May 30, 2002 1:49 PM
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10-4
Gear Ratio:
1st 34/12 (2.833)
2nd 34/19 (1.789)
3rd 29/22 (1.318)
4th 26/25 (1.040)
5th 23/28 (0.821)
Reverse 73/22
× 34/12
× 19/18 (9.924)
Chassis:
Frame type Steel tube
Caster angle 4°
Trail 20 mm
Tire:
Type Tubeless
Size: Front AT22
× 7-10
Size: Rear AT22 × 10-10
Brake:
Front brake type Dual disk
operation Right hand operation
Rear brake type Drum brake
operation Left hand and right foot operationModel YFM250X
E-10-E.fm Page 4 Monday, June 3, 2002 11:06 AM