2006 YAMAHA YFZ450 brake

7-71
SLIDING AND SKIDDING
Care should be used when riding on loose or
slippery surfaces since the ATV may slide. If
unexpected and uncorrected, sliding could lead
to an accident.
To reduce the tendency for the front wheels to
slide in loose or slippery conditions, positioning
your weight over the front wheels will sometimes
help.
If the rear wheels of your ATV start to slide side-
ways, control can usually be regained (if there is
room to do so) by steering in the direction of the
slide. Applying the brakes or accelerating is not
recommended until you have corrected the
slide.
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7-77
8If your ATV starts to slide sideways:
Steer in the direction of the slide if you have
the room.
Applying the brakes or accelerating is not rec-
ommended until you have corrected the slide.
(See pages 7-71–7-73.)
8If your ATV can’t make it up a hill you are try-
ing to climb:
Turn the ATV around if you still have forward
speed. If not, stop, dismount on the uphill side
of the ATV and physically turn the ATV
around. If the ATV starts to slip backwards
DO NOT USE THE REAR BRAKE - the ATV
may tip over on top of you. Dismount the ATV
on the uphill side. (See pages 7-47–7-55.)
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7-79
8If your ATV is traversing a sloping surface:
Be sure to ride with your weight positioned
towards the uphill side of the ATV to maintain
proper balance. If the ATV starts to tip, steer
down the hill (if there are no obstacles in your
way) to regain balance. If you discover that
the ATV is going to tip over, dismount on the
uphill side. (See pages 7-61–7-63.)
8If your ATV encounters shallow water:
Ride slowly and carefully through slow mov-
ing water, watching for obstacles. Be sure to
let water drain from the ATV and CHECK
YOUR BRAKES FOR PROPER OPERATION
when you come out of the water. Do not con-
tinue to ride your ATV until you have regained
adequate braking ability. (See pages 7-65–
7-67.)
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8-8
INITIAL EVERY
month 1 3 6 6 12
ITEM ROUTINEWhichever
km 320 1200 2400 2400 4800 comes first
(mi) (200) (750) (1500) (1500) (3000)
hours 20 75 150 150 300
Air filter element9Clean. Every 20–40 hours
9Replace if necessary. (more often in wet or dusty areas)
Clutch*9Check operation.
2222
9Adjust if necessary.
9Check free play/operation/fluid leakage/
Front brake*See NOTE Page 8-10.22222
9Correct if necessary.
9Check operation/fluid leakage/
Rear brake*See NOTE Page 8-10.22222
9Correct if necessary.
Wheels*9Check balance/damage/runout.
2222
9Replace if necessary.
Wheel bearings*9Check bearing assemblies for looseness/damage.
2222
9Replace if damaged.
Rear arm pivot*9Lubricate with lithium-soap-based grease.222
Upper and lower arm
pivot and steering 9Lubricate with lithium-soap-based grease.222
shaft*
Drive chain9Check and adjust slack/alignment/clean/lube.22222
Fittings and fasteners*9Check all chassis fittings and fasteners.
22222
9Correct if necessary.
Front and rear9Check operation.
22
suspension*9Correct if necessary.
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8-10
NOTE:
8Recommended brake fluid: DOT 4
8Brake fluid replacement:
9When disassembling the master cylinder or caliper cylinder, replace the brake fluid. Normally
check the brake fluid level and add the fluid as required.
9On the inner parts of the master cylinder and caliper cylinder, replace the oil seals every two
years.
9Replace the brake hoses every four years, or if cracked or damaged.
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8-81
EBU13981
Front brake pad inspection
Each brake pad is provided with a wear indicator
groove. The indicator grooves allow checking of
brake pad wear without disassembling the
brake. Apply the brake and inspect the wear
indicator grooves. If a brake pad is worn to the
point that the wear indicator groove is almost in
contact with the disc plate, ask a Yamaha dealer
to replace the brake pads as a set.
NOTE:
The wheels need to be removed to inspect the
brake pads. (See page 8-125 for wheel removal
and installation procedures.)
1
1. Wear indicator groove1. Rainure d’indicateur d’usure1. Ranura indicador de desgaste
FrontAvantDelantero
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8-83
EBU13990
Rear brake pad inspection
Each brake pad is provided with a wear indicator
groove. The indicator grooves allow checking of
brake pad wear without disassembling the
brake. Apply the brake and inspect the wear
indicator grooves. If a brake pad is worn to the
point that the wear indicator groove is almost in
contact with the disc plate, ask a Yamaha dealer
to replace the brake pads as a set.1
1. Wear indicator groove1. Rainure d’indicateur d’usure1. Ranura indicador de desgaste
RearArrièreTrasero
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8-85
EBU16070
Brake fluid level inspection
Insufficient brake fluid may let air enter the
brake system, possibly causing the brakes to
become ineffective.
Before riding, check that the brake fluid is above
the minimum level mark and replenish if neces-
sary. A low brake fluid level may indicate worn
brake pads and/or brake system leakage. If the
brake fluid level is low, be sure to check the
brake pads for wear and the brake system for
leakage.
1. Minimum level mark 1. Repère de niveau minimum 1. Marca de mínimo
FrontAvantDelantero
1
1. Minimum level mark 1. Repère de niveau minimum 1. Marca de mínimo
RearArrièreTrasero
5TG-9-62 8 5/13/05 1:48 PM Page 8-85