Yamaha Fz6n Manual

3-44
A
B
ADJUSTING THE REAR BRAKE /
CHECKING THE BRAKE FLUID LEVELCHK
ADJ
NOTE:
WARNING
3. Adjust:

rear brake light switch
Refer to “ADJUSTING THE REAR BRAKE
LIGHT SWITCH”.
EAS00115
CHECKING THE BRAKE FLUID LEVEL
1. Stand the motorcycle on a level surface.

Place the motorcycle on a suitable stand.

Make sure the motorcycle is upright.
2. Check:

brake fluid level
Below the minimum level mark 
a 
 Add the
recommended brake fluid to the proper level.
Recommended brake fluid
DOT 4
AFront brake
BRear...

3-45
A
B
CHECKING THE BRAKE FLUID LEVEL /
CHECKING THE FRONT AND REAR BRAKE PADSCHK
ADJ
CAUTION:
NOTE: Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean
up any spilt brake fluid immediately.
In order to ensure a correct reading of the brake
fluid level, make sure the top of the brake fluid
reservoir is horizontal.
EAS00118
CHECKING THE FRONT AND REAR BRAKE
PADS
The following procedure applies to all of the
brake pads.
1. Operate the brake.
2. Check:

front brake pad

rear...

3-46
ADJUSTING THE REAR BRAKE LIGHT SWITCH /
CHECKING THE FRONT AND REAR BRAKE HOSESCHK
ADJ
A
B
NOTE:
a
b
EAS00128
ADJUSTING THE REAR BRAKE LIGHT
SWITCH
The rear brake light switch is operated by move-
ment of the brake pedal. The rear brake light
switch is properly adjusted when the brake light
comes on just before the braking effect starts.
1. Check:

rear brake light operation timing
Incorrect 
 Adjust.
2. Adjust:

rear brake light operation timing
a. Hold the main body 
1 of the rear brake light...

3-47
A
B
BLEEDING THE HYDRAULIC BRAKE SYSTEM
CHK
ADJ
WARNING
NOTE:
NOTE:
EAS00135
BLEEDING THE HYDRAULIC BRAKE
SYSTEM
Bleed the hydraulic brake system whenev-
er:

the system is disassembled.

a brake hose is loosened, disconnected or
replaced.

the brake fluid level is very low.

brake operation is faulty.

Be careful not to spill any brake fluid or allow
the brake fluid reservoir to overflow.

When bleeding the hydraulic brake system,
make sure there is always enough brake fluid
before applying the...

3-48
BLEEDING THE HYDRAULIC BRAKE SYSTEM /
ADJUSTING THE SHIFT PEDALCHK
ADJ
WARNING
a
b
h. Tighten the bleed screw and then release the
brake lever or brake pedal.
i. Repeat steps (e) to (h) until all of the air
bubbles have disappeared from the brake
fluid in the plastic hose.
j. Tighten the bleed screw to specification.
Bleed screw
6 Nm (0.6 m
kg, 4.3 ft
lb)
k. Fill the brake fluid reservoir to the proper lev-
el with the recommended brake fluid.
Refer to “CHECKING THE BRAKE FLUID
LEVEL”.
After...

3-49
ADJUSTING THE DRIVE CHAIN SLACK
CHK
ADJ
NOTE:
CAUTION:
WARNING
NOTE:
a
b
NOTE:
EAS00140
ADJUSTING THE DRIVE CHAIN SLACK
The drive chain slack must be checked at the
tightest point on the chain.
A drive chain that is too tight will overload
the engine and other vital parts, and one that
is too loose can skip and damage the swin-
garm or cause an accident. Therefore, keep
the drive chain slack within the specified
limits.
1. Stand the motorcycle on a level surface.
Securely support the motorcycle so...

3-50
ADJUSTING THE DRIVE CHAIN SLACK /
LUBRICATING THE DRIVE CHAINCHK
ADJ
f. Tighten both locknuts to specification.
Locknut
16 Nm (1.6 m
kg, 12 ft
lb)
g. Tighten the wheel axle nut to specification.
Wheel axle nut
120 Nm (12 m
kg, 87 ft
lb)
EAS00143
LUBRICATING THE DRIVE CHAIN
The drive chain consists of many interacting
parts. If the drive chain is not maintained proper-
ly, it will wear out quickly. Therefore, the drive
chain should be serviced, especially when the
motorcycle is used in dusty areas....

3-51
CHECKING AND ADJUSTING THE STEERING HEAD
CHK
ADJ
WARNING
NOTE:
NOTE:
EAS00146
CHECKING AND ADJUSTING THE
STEERING HEAD
1. Stand the motorcycle on a level surface.
Securely support the motorcycle so that
there is no danger of it falling over.
Place the motorcycle on a suitable stand so that
the front wheel is elevated.
2. Check:

steering head
Grasp the bottom of the front fork legs and
gently rock the front fork.
Binding / looseness 
 Adjust the steering
head.
3. Remove:

upper bracket
Refer to...

3-52
CHECKING AND ADJUSTING THE STEERING HEAD
CHK
ADJ
WARNING
NOTE:
NOTE: c. Loosen the lower ring nut 
6 completely, then
tighten it to specification.
Do not overtighten the lower ring nut.
Lower ring nut
(final tightening torque)
18 Nm (1.8 m
kg, 13 ft
lb)
d. Check the steering head for looseness or
binding by turning the front fork all the way in
both directions. If any binding is felt, remove
the lower bracket and check the upper and
lower bearings.
Refer to “STEERING HEAD” in chapter 4.
e. Install...

3-53
CHECKING AND ADJUSTING THE STEERING HEAD /
CHECKING THE FRONT FORKCHK
ADJ
WARNING
Steering head tension
200 
 500 g
e. Repeat the above procedure on the opposite
handlebar.
f. If the steering head tension is out of specifi-
cation (both handlebars should be within
specification), remove the upper bracket and
loosen or tighten the upper ring nut.
g. Reinstall the upper bracket and measure the
steering head tension again as described
above.
h. Repeat the above procedure until the steer-
ing head...