2005 YAMAHA BIG BEAR PRO 400 tire size

2-13

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.


Never modify an ATV through improper instal-
lation or use of accessories.


Never exceed the stated load capacity for an
ATV. Cargo should be properly distributed and
securely attached. Reduce speed and follow
instructions in this manual for carrying cargo or
pulling a trailer. Allow greater distance for brak-
ing.
U1C160.book Page 13 Wednesday, May 12, 2004 4:55 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 Oceania
For Europe
Manufacturer Size Type
Front CHENG SHIN AT25
× 8-12 C828
Rear CHENG SHIN AT25
× 10-12 C828
Manufacturer Size Type
Front DUNLOP AT25
× 8-12 KT404
Rear DUNLOP AT25
× 10-12 KT405B
U1C160.book Page 19 Wednesday, May 12, 2004 4:55 PM

7-15
WARNING
_ Always use the size and type tires specified in
the Owner’s Manual for this vehicle on page
5-19. Always maintain proper tire pressure as
described in the Owner’s Manual on pages
5-21–5-23. 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. _
U1C160.book Page 15 Wednesday, May 12, 2004 4:55 PM

10-5
Gear Ratio:
Chassis:
Frame type Steel tube frame
Caster angle 2.5°
Trail 15.0 mm
Tire:
Ty p e T u b e l e s s
Size (front) AT25
× 8-12
(rear) AT25
× 10-12
Brake:
Front brake type Dual disc brake
operation Right hand operation
Rear brake type Drum brake
operation Left hand and right foot operation Model YFM400FP/YFM400FW
38/13
× 20/24
× 22/20 (2.680) 38/13
× 20/24
× 27/15 (4.384)
34/18
× 20/24
× 22/20 (1.731)
30/22
× 20/24
× 22/20 (1.249)
26/25
× 20/24
× 22/20 (0.953)
24/29
× 20/24
× 22/20 (0.759)
36/13
× 27/16 (4.673)34/18
× 20/24
× 27/15 (2.832)
30/22
× 20/24
× 27/15 (2.044)
26/25
× 20/24
× 27/15 (1.560)
24/29
× 20/24
× 27/15 (1.242) High range Low range
1st
2nd
3rd
4th
5th
Reverse
U1C160.book Page 5 Wednesday, May 12, 2004 4:55 PM