2001 YAMAHA YFM400F tire size

2-13
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l
Always be sure there are no obstacles or
people behind you when you operate in re-
verse. When it is safe to proceed in reverse,
go slowly.
l
Always use the size and type tires specified
in this manual.
l
Always maintain proper tire pressure as de-
scribed in this manual.
l
Never modify an ATV through improper in-
stallation or use of accessories.
l
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 carry-
ing cargo or pulling a trailer. Allow greater
distance for braking.

5-25
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EBU00158
Tires
Always use the recommended tires.
WARNING
Use of improper tires on this ATV, or opera-
tion of this ATV with improper or uneven tire
pressure, 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)2. The tires should be set to the recommend-
ed pressure:
Manufacturer Size Type
Front DUNLOP AT25 ´ 8 - 12 KT123
Rear DUNLOP AT25 ´ 10 - 12 KT127
Manufacturer Size Type
Front CHENG-SHIN AT25 ´ 8 - 12 C828
Rear CHENG-SHIN AT25 ´ 10 - 12 C828

7-15
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WARNING

Always use the size and type tires specified in
the Owner’s Manual for this vehicle on pages
5-25 ~ 5-27. Always maintain proper tire pres-
sure as described in the Owner’s Manual on
page 5-29. 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.

Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B061_YFM400FWA-61:YFM600SPEC-
ER
10-4
Spark plug:
Type/manufacturer DR8EA-9 / NGK
Spark plug gap 0.6 ~ 0.7 mm
Clutch type Wet, centrifugal automatic
Transmission:
Primary reduction system V-belt
Secondary reduction system Spur gear
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)
Sub transmission ratio low 45/16 (2.813)
high 38/23 (1.652)
Chassis:
Frame type Steel tube frame
Caster angle 4˚
Trail 21 mm
Tire:
Type Tubeless
Size (front) AT25
´
8 - 12
(rear) AT25
´
10 - 12 Model YFM400FA / YFM400FWAN