2000 YAMAHA YZ426F boot

EC040001
IMPORTANT NOTICE
THIS MACHINE IS DESIGNED STRICTLY
FOR COMPETITION USE, ONLY ON A
CLOSED COURSE. It is illegal for this
machine to be operated on any public street,
road, or highway. Off-road use on public lands
may also be illegal. Please check local regula-
tions before riding.
1. THIS MACHINE IS TO BE OPERATED
BY AN EXPERIENCED RIDER ONLY.
Do not attempt to operate this machine
at maximum power until you are totally
familiar with its characteristics.
2. THIS MACHINE IS DESIGNED TO BE
RIDDEN BY THE OPERATOR ONLY.
Do not carry passengers on this
machine.
3. ALWAYS WEAR PROTECTIVE
APPAREL.
When operating this machine, always
wear an approved helmet with goggles
or a face shield. Also wear heavy boots,
gloves, and protective clothing. Always
wear proper fitting clothing that will not
be caught in any of the moving parts or
controls of the machine.
4. ALWAYS MAINTAIN YOUR MACHINE
IN PROPER WORKING ORDER.
For safety and reliability, the machine
must be properly maintained. Always
perform the pre-operation checks indi-
cated in this manual. Correcting a
mechanical problem before you ride may
prevent an accident.
5. GASOLINE IS HIGHLY FLAMMABLE.
Always turn off the engine while refuel-
ing. Take care to not spill any gasoline
on the engine or exhaust system. Never
refuel in the vicinity of an open flame, or
while smoking.
SAFETY INFORMATION

5 - 13
CHASFRONT BRAKE AND REAR BRAKE
EC5A8300
MASTER CYLINDER DISASSEMBLY
Front
õRear
Extent of removal:1 Front master cylinder disassembly2 Rear master cylinder disassembly
Extent of removal Order Part name Q’ty Remarks
MASTER CYLINDER DISAS-
SEMBLY
1 Master cylinder cap 1
2 Diaphragm 1
3 Locknut 1
4 Master cylinder boot 1
5 Circlip 1Use a long nose circlip pliers.
6 Plain washer 1
7 Push rod 1
8 Master cylinder kit 1
12
2

5 - 21
CHAS

FRONT BRAKE AND REAR BRAKE
4. Install:
[Front]
l
Master cylinder kit
1

l
Push rod
2

l
Plain washer
3

l
Circlip
4

l
Master cylinder boot
5

l
Locknut
6

To master cylinder
7
.
[Rear]
l
Master cylinder kit
1

l
Push rod
2

l
Circlip
3

l
Master cylinder boot
4

l
Locknut
5

To master cylinder
6
.
NOTE:

l
Apply the brake fluid on the master cylinder
kit.
l
Apply the lithium soap base grease on the tip
of the push rod.
l
When installing the circlip, use a long nose
circlip pliers.

Front
õ
Rear
EC5A5300
Front master cylinder
1. Install:
l
Master cylinder
1

l
Master cylinder bracket
2

l
Bolt (master cylinder bracket)
3

NOTE:

l
Install the bracket so that the arrow mark
a
face upward.
l
First tighten the bolts on the upper side of the
master cylinder bracket, and then tighten the
bolts on the lower side.
WARNING

Install the master cylinder so that the gaps
b
and
c
between the bolt (grip cap)
4
and
push rod
5
are equal. If you make a mis-
take in the master cylinder installation
position, the brake lever may contact the
grip cap, resulting in poor brake perfor-
mance.

õ
T R..9 Nm (0.9 m · kg, 6.5 ft · lb)