2005 YAMAHA YFZ450 tire size

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 use the size and type of tires specified
in this manual.


Always maintain proper tire pressure as de-
scribed in this manual.
U5TG61.book Page 13 Friday, April 2, 2004 11:28 AM

5-21
EBU01580
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-01E
Manufacturer Size Type
Front DUNLOP AT21
× 7R-10KT331A
Radial
Rear DUNLOP AT20
× 10R-9KT355
Radial
U5TG61.book Page 21 Friday, April 2, 2004 11:28 AM

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 pres-
sure 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 un-
even tire pressure, may cause loss of control,
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. _
U5TG61.book Page 15 Friday, April 2, 2004 11:28 AM

10-4
Gear ratio:
1st
2nd
3rd
4th
5th29/12 (2.416)
27/14 (1.928)
25/16 (1.562)
23/18 (1.277)
21/20 (1.050)
Chassis:
Frame type
Caster angle
TrailSteel tube
5.0
°
21.0 mm
Tire:
Type
Size: Front
Size: RearTubeless
AT21 ×
7R-10
AT20 ×
10R-9
Brake:
Front brake type
Operation
Rear brake type
OperationDual disc brake
Right hand operation
Single disc brake
Right foot operation
Suspension:
Front
RearDouble wishbone
Swingarm (link suspension)
Shock absorber:
Front
RearCoil spring/gas-oil damper
Coil spring/gas-oil damper MODEL YFZ450
U5TG61.book Page 4 Friday, April 2, 2004 11:28 AM