2002 YAMAHA YFM80 tire size

2-13
8Never 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.
8Always use the size and type tires specified in
this manual.
8Always maintain proper tire pressure as
described in this manual.
8Never modify an ATV through improper instal-
lation or use of accessories.
5NE-9-61 ~3 4/26/01 1:24 PM Page 48

5-19
EBU00158
Tires
Always use the recommended tires.
w
Use of improper tires on this ATV, or opera-
tion of this ATV with improper or uneven tire
pressure, may cause loss of control, increas-
ing 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 recommended.
2. The tires should be set to the recom-
mended pressure:
8Recommended tire pressure
Front 20 kPa (0.20 kg/cm
2, 0.20 bar)
Rear 20 kPa (0.20 kg/cm2, 0.20 bar)
Manufacturer Size Type
Front DUNLOP AT18 ×7–7 KT586
Rear DUNLOP AT18 ×8–7 KT587
5NE-9-61 4~5 4/26/01 1:26 PM Page 42

7-15
w
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 pressure 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 uneven 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.
w
Always go at a speed that is proper for the
terrain, visibility and operating conditions,
and your experience. Operating this ATV at
speeds too fast for your skills or the condi-
tions. increases your chances of losing con-
trol of the ATV, which can result in an acci-
dent.
5NE-9-61 7 4/26/01 1:27 PM Page 158

10-4
Model YFM80
Transmission:
Primary reduction system Spur gear
Primary reduction ratio 65/20 (3.250)
Secondary reduction system Shaft drive
Secondary reduction ratio 19/18 ×34/10 (3.588)
Transmission type Constant mesh 3-speed
Operation Left foot operation
Gear ratio:
1st 39/11 (3.545)
2nd 35/17 (2.059)
3rd 31/22 (1.409)
Chassis:
Frame type Steel tube
Caster angle 1°
Trail 3.8 mm
Tire:
Type Tubeless
Size: Front AT18 ×7-7
Size: Rear AT18 ×8-7
5NE-9-61 9~ 4/26/01 1:30 PM Page 311