2003 YAMAHA YFM660R tires

5-27 1. Low-pressure tire gauge
1. Manomètre basse pression pour pneus
1. Manómetro de baja presión
EBU00159
How to measure tire pressure
Use the low-pressure tire gauge.NOTE:The low-pressure tire gauge is included as stan-
dard equipment. Make two measurements of the
tire pressure and use the second reading. Dust or
dirt in the gauge could cause the first reading to be
incorrect.Set pressure with tires cold.
Set tire pressures to the following specifications:
Recommended
pressureMinimum Maximum
Front27.5 kPa
(0.275 kgf/cm
2,
0.275 bar)24.5 kPa
(0.245 kgf/cm
2,
0.245 bar)30.5 kPa
(0.305 kgf/cm
2,
0.305 bar)
Rear27.5 kPa
(0.275 kgf/cm
2,
0.275 bar)24.5 kPa
(0.245 kgf/cm
2,
0.245 bar)30.5 kPa
(0.305 kgf/cm
2,
0.305 bar)
U5LP62.book Page 27 Wednesday, May 8, 2002 11:24 AM

6-21
EBU00208
To decelerate:
When slowing down or stopping, release the throt-
tle and apply the brakes smoothly and evenly. As
you slow down, shift to a lower gear. Be sure that
the engine has sufficiently slowed before engaging
a lower gear. Improper use of the brakes or shift-
ing can cause the tires to lose traction, reducing
control and increasing the possibility of an acci-
dent.
WARNING
Make sure the engine has sufficiently slowed
before shifting to a lower gear. Engaging a low-
er gear when the engine speed is too high
could make the wheels stop rotating. This
could cause loss of control, an accident and
injury. It could also cause engine or drive train
damage.
U5LP62.book Page 21 Wednesday, May 8, 2002 11:24 AM

7-15
WARNING
_ Always use the size and type tires specified in
the Owner’s Manual for this vehicle on pages
5-23–5-25. Always maintain proper tire pres-
sure as described in the Owner’s Manual on
page 5-27. 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. _
U5LP62.book Page 15 Wednesday, May 8, 2002 11:24 AM

7-37
CAUTION:_ Do not shift gears without releasing the throt-
tle. Damage to the engine or drive train may oc-
cur. _When slowing down or stopping, release the throt-
tle and apply the brakes smoothly and evenly. As
you slow down, shift to a lower gear. Be sure that
the engine has sufficiently slowed before engaging
a lower gear. Improper use of the brakes or shift-
ing can cause the tires to lose traction, reducing
control and increasing the possibility of an acci-
dent.
WARNING
_ Make sure the engine has sufficiently slowed
before shifting to a lower gear. Engaging a low-
er gear when the engine speed is too high
could cause the wheels to stop rotating. _
U5LP62.book Page 37 Wednesday, May 8, 2002 11:24 AM

7-63
CROSSING THROUGH SHALLOW WATER
The ATV can be used to cross slow moving, shal-
low water of up to a maximum of 35 cm in depth.
Before entering the water, choose your path care-
fully. Enter where there is no sharp drop off, and
avoid rocks or other obstacles which may be slip-
pery or upset the ATV. Drive slowly and carefully.
WARNING
_ Never operate this ATV in fast flowing water or
in water deeper than that specified in your
Owner’s 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 lin-
ings. If the ATV is operated through deep or
fast flowing water, the tires may float, causing
loss of traction and loss of control, which
could lead to an accident. _
U5LP62.book Page 63 Wednesday, May 8, 2002 11:24 AM

8-81 a. Drive chain slack
a. Flèche de la chaîne de transmission
a. Tensión de la cadena de transmissión
EBU01144
Drive chain slack checkNOTE:_ Move the ATV back and forth and find the tightest
position of the drive chain. Check and/or adjust the
chain slack while it is in this tightest position. _To check the drive chain slack, all tires must be
touching the ground and there should be no weight
on it. Check the drive chain slack at the position
shown in the illustration Normal slack is approxi-
mately 27–37 mm. If the slack exceeds 37 mm,
adjust it to specification.
U5LP62.book Page 81 Wednesday, May 8, 2002 11:24 AM