2005 YAMAHA BRUIN 250 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 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 of tires specified
in this manual.


Always maintain proper tire pressure as de-
scribed in this manual.
U1P060.book Page 13 Monday, August 2, 2004 12:19 PM

5-19
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.(For Europe)
(For Oceania)
Manufacturer Size Type
Front MAXXIS AT22
× 7-10 M905
Rear MAXXIS AT22
× 10-10 M906Manufacturer Size Type
Front CARLISLE AT22
× 7-10 TRAIL WOLF
Rear CARLISLE AT22
× 10-10 TRAIL WOLF
U1P060.book Page 19 Monday, August 2, 2004 12:19 PM

7-15
WARNING
_ Always use the size and type tires specified in
the Owner’s Manual for this vehicle on pages
5-19–5-21. Always maintain proper tire pres-
sure as described in the Owner’s Manual on
page 5-23. 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. _
U1P060.book Page 15 Monday, August 2, 2004 12:19 PM

10-4
Transmission:
Primary reduction system Spur gear
Primary reduction ratio 73/22 (3.318)
Secondary reduction system Shaft drive
Secondary reduction ratio 19/18
× 46/11 (4.414)
Transmission type Constant mesh 5-speed. forward, 1-speed. reverse
Operation Left foot operation
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 frame
Caster angle 4.0°
Trail 20.0 mm
Tire:
Type Tubeless
Size: Front AT22
× 7-10
Size: Rear AT22 × 10-10 Model YFM250B
U1P060.book Page 4 Monday, August 2, 2004 12:19 PM