tire pressure YAMAHA YFM400F 2001 Owners Manual

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Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B061_YFM400FWA-61:YFM600TOC-
Lights ................................................ 5-23
Switches ........................................... 5-23
Tires .................................................. 5-25
How to measure tire pressure ........ 5-29
Tire wear limit .................................. 5-31
OPERATION ........................................... 6-1
Starting a cold engine ....................... 6-3
Starting a warm engine ..................... 6-9
Warming up ........................................ 6-9
Drive select lever operation and
reverse driving ............................... 6-11
Engine break-in ................................ 6-17
Parking .............................................. 6-19
Parking on a slope ........................... 6-21
Accessories and loading ................. 6-23
RIDING YOUR ATV ................................ 7-1
Getting to know your ATV ................. 7-3
Ride with care and good
judgement ........................................ 7-5
Be careful where you ride ............... 7-27
Turning your ATV ............................ 7-39
Climbing uphill ................................. 7-45
Riding downhill ................................ 7-55
Crossing a slope ............................... 7-59Crossing through shallow
water ............................................... 7-63
Riding over rough terrain ................ 7-69
Sliding and skidding ........................ 7-71
What to do if ..................................... 7-75
What to do... ..................................... 7-75
PERIODIC MAINTENANCE AND
ADJUSTMENT ....................................... 8-1
Owner’s manual and tool kit ............. 8-3
Periodic maintenance/
lubrication ........................................ 8-7
Panel removal and installation ....... 8-15
Engine oil .......................................... 8-31
Final gear oil ..................................... 8-41
Differential gear oil .......................... 8-47
Cooling system ................................ 8-53
Changing the coolant ...................... 8-57
Front axle boots ............................... 8-63
Spark plug ........................................ 8-65
Air filter cleaning.............................. 8-71
67
8

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WARNING5FE-21568-11
Improper ATV use can result in SEVERE
INJURY or DEATH.ALWAYS USE
AN APPROVED
HELMET AND
PROTECTIVE
GEARNEVER USE
ON PUBLIC
ROADSNEVER CARRY
PASSENGERSNEVER USE
WITH DRUGS
OR ALCOHOLNEVER operate :• without proper training or instruction.
• at speeds too fast for your skills or
the conditions.
• on public roads-a collision can occur
with another vehicle.
• with a passenger-passengers affect balance
and steering and increase risk
of losing control.ALWAYS :• use proper riding techniques to avoid vehicle overturns on hills and rough terrain
and in turns.
• avoid paved surfaces-pavement may
seriously affect handling and control. LOCATE AND READ OWNER'S MANUAL.
FOLLOW ALL INSTRUCTIONS AND WARNINGS.
3
WARNING5FE-21696-01
IMPROPER TIRE PRESSURE OR OVERLOADING CAN
CAUSE LOSS OF CONTROL.
LOSS OF CONTROL CAN RESULT IN SEVERE
INJURY OR DEATH.OPERATING TIRE PRESSURE :
Set with tires cold
• Recommended : FRONT : 25 kPa, { 0.25 kgf/cm
2}, 3.6 psi
REAR : 25 kPa, { 0.25 kgf/cm2}, 3.6 psi
• Minimum : FRONT : 22 kPa, { 0.22 kgf/cm2}, 3.2 psi
REAR : 22 kPa, { 0.22 kgf/cm2}, 3.2 psi
• Never set tire pressure below minimum.
It could cause the tire to dislodge from the rim.LOADING / TRAILER TOWING• Cargo or a trailer can affect stability and handling.
Read owner's manual before loading or towing.
• When loading with cargo or towing a trailer :
Reduce speed and allow more room to stop.
Avoid hills and rough terrain.
• Maximum Vehicle Load : 210 kg, (463 lbs).
Includes weight of operator, cargo and accessories
(and if applicable, trailer tongue weight).

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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.
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Always use the size and type tires specified
in this manual.
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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.

5-1
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PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
Brakes
• Check operation, free play, fluid level and fluid leakage.
• Fill with DOT 4 brake fluid if necessary.5-7 ~ 5-9,
8-91 ~ 8-95
Fuel
• Check fuel level.
• Fill with fuel if necessary.5-11 ~ 5-13
Engine oil
• Check oil level.
• Fill with oil if necessary.5-15 ~ 5-17,
8-31 ~ 8-41
Coolant reservoir
• Check coolant level.
• Fill with coolant if necessary.8-53 ~ 8-63
Final gear oil/
Differential gear oil
• Check for leakage. 5-19, 8-41 ~ 8-51
Throttle
• Check for proper throttle cable operation. 5-21, 8-87
Wheels and tires
• Check tire pressure, wear and damage.5-25 ~ 5-31,
8-107 ~ 8-109
Fittings and Fasteners
• Check all fittings and fasteners. 5-21
Lights
• Check for proper operation. 5-23, 8-121 ~ 8-127
Front axle boots
• Check for damage. 8-63

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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

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Recommended tire pressure
Front 25 kPa (0.25 kg/cm
2, 0.25 bar)
Rear 25 kPa (0.25 kg/cm2, 0.25 bar)
l
Check and adjust tire pressures when the
tires are cold.
l
Tire pressures must be equal on both
sides.
3. Tire pressure below the minimum speci-
fied could cause the tire to dislodge from
the rim under severe riding conditions.
The following are minimums:
Front 22 kPa (0.22 kg/cm
2, 0.22 bar)
Rear 22 kPa (0.22 kg/cm2, 0.22 bar)
4. Use no more than the following pressures
when seating the tire beads.
Front 250 kPa (2.5 kg/cm2, 2.5 bar)
Rear 250 kPa (2.5 kg/cm2, 2.5 bar)
Higher pressures may cause the tire to
burst. Inflate the tires very slowly and
carefully. Fast inflation could cause the tire
to burst.

5-29
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How to measure tire pressure
Use the low-pressure tire gauge.NOTE:The low-pressure tire gauge is included as
standard equipment. Make two measurements
of the tire pressure and use the second read-
ing. Dust or dirt in the gauge could cause thefirst reading to be incorrect.
Set pressure with tires cold.
Set tire pressures to the following specifica-
tions:ACE-02EACE-02E
Recommended
pressureMinimum Maximum
Front25 kPa
(0.25 kg/cm
2,
0.25 bar)22 kPa
(0.22 kg/cm
2,
0.22 bar)28 kPa
(0.28 kg/cm
2,
0.28 bar)
Rear25 kPa
(0.25 kg/cm
2,
0.25 bar)22 kPa
(0.22 kg/cm
2,
0.22 bar)28 kPa
(0.28 kg/cm
2,
0.28 bar)
1. Low-pressure tire gauge
1. Manomètre basse pression pour pneus
1. Manómetro de baja presión

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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.

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1. Owner’s manual
2. Owner’s tool kit
3. Low-pressure tire gauge
1. Manuel du propriétaire
2. Manuel du trousse à outils
3. Manomètre basse pression pour pneus
1. Manual del propietario
2. Manual del juego de herramientas
3. Manómetro de baja presión
EBU00536
Owner’s manual and tool kit
You are recommended to put this owner’s
manual in the vinyl bag and always carry it un-
der the seat as shown. Put the owner’s tool kit
and low-pressure tire gauge in the storage
box.
The service information included in this manu-
al is intended to provide you, the owner, with
the necessary information for completing your
own preventive maintenance and minor re-
pairs. The tools provided in the Owner’s tool kit
are sufficient for this purpose, except that a
torque wrench is also necessary to properly
tighten nuts and bolts.
NOTE:

If you do not have a torque wrench available
during a service operation requiring one, take
your machine to a Yamaha dealer to check the
torque settings and adjust them as necessary.