lock YAMAHA FZ6 N 2004 User Guide

PERIODIC MAINTENANCE AND MINOR REPAIR
6-16
6 “broken in”. Therefore, it is ad-
visable before doing any high-
speed riding to ride conserva-
tively for approximately 100 km
(60 mi) after installing a new tire.


The tires must be warmed up
before a high-speed run.


Always adjust the tire air pres-
sure according to the operatingconditions.
EAU21960
Cast wheels To maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified wheels.

The wheel rims should be checked
for cracks, bends or warpage be-
fore each ride. If any damage is
found, have a Yamaha dealer re-
place the wheel. Do not attempt
even the smallest repair to the
wheel. A deformed or cracked
wheel must be replaced.


The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.


Ride at moderate speeds after
changing a tire since the tire sur-
face must first be “broken in” for it
to develop its optimal characteris-
tics.
EAU22020
Adjusting the clutch lever free
play The clutch lever free play should mea-
sure 10.0–15.0 mm (0.39–0.59 in) as
shown. Periodically check the clutch le-
ver free play and, if necessary, adjust it
as follows.
1. Loosen the locknut at the clutch le-
ver.
2. To increase the clutch lever free
play, turn the adjusting bolt in di-
rection (a). To decrease the clutch
lever free play, turn the adjusting
bolt in direction (b).
3. Tighten the locknut.1. Clutch lever free play adjusting bolt
2. Clutch lever free play
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-19
6


Be careful that water does not en-
ter the brake fluid reservoir when
refilling. Water will significantly
lower the boiling point of the fluid
and may result in vapor lock.


Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.


As the brake pads wear, it is nor-
mal for the brake fluid level to grad-
ually go down. However, if the
brake fluid level goes down sud-
denly, have a Yamaha dealer
check the cause.
EAU22730
Changing the brake fluid Have a Yamaha dealer change the
brake fluid at the intervals specified in
the NOTE after the periodic mainte-
nance and lubrication chart. In addition,
have the oil seals of the master cylin-
ders and calipers as well as the brake
hoses replaced at the intervals listed
below or whenever they are damaged
or leaking.

Oil seals: Replace every two
years.


Brake hoses: Replace every four
years.
EAU22760
Drive chain slack The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU22770
To check the drive chain slack
1. Place the motorcycle on a level
surface and hold it in an upright po-
sition.NOTE:When checking and adjusting the drive
chain slack, the motorcycle should be
positioned straight up and there shouldbe no weight on it.
2. Shift the transmission into the neu-
tral position.
3. Move the rear wheel by pushing
the motorcycle to locate the tight-
est portion of the drive chain, and
then measure the drive chain slack
as shown.Drive chain slack:
45.0–55.0 mm (1.77–2.17 in)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-20
6 4. If the drive chain slack is incorrect,
adjust it as follows.
EAU34360
To adjust the drive chain slack
1. Loosen the axle nut, then loosen
the locknut at each end of the
swingarm.
2. To tighten the drive chain, turn the
adjusting nut at each end of the
swingarm in direction (a). To loos-
en the drive chain, turn the adjust-
ing nut at each end of the
swingarm in direction (b), and then
push the rear wheel forward.
NOTE:Using the alignment marks on each
side of the swingarm, make sure that
both adjusting nuts are in the same po-sition for proper wheel alignment.CAUTION:
ECA10570
Improper drive chain slack will over-
load the engine as well as other vital
parts of the motorcycle and can lead
to chain slippage or breakage. To
prevent this from occurring, keep
the drive chain slack within thespecified limits.3. Tighten the locknuts, and then
tighten the axle nut to the specified
torque.
1. Drive chain slack
1. Axle nut
2. Drive chain slack adjusting nut
3. Locknut
4. Alignment marks
Tightening torque:
Locknut:
16 Nm (1.6 m·kgf, 11 ft·lbf)
Axle nut:
120 Nm (12.0 m·kgf, 87 ft·lbf)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-27
6
EAU32841
Replacing the fuses The main fuse box is located under the
fuel tank.
The fuse box is located behind panel A.
(See page 6-5.)
If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off
the electrical circuit in question.
2. Remove the blown fuse, and then
install a new fuse of the specified
amperage.
CAUTION:
ECA10640
Do not use a fuse of a higher amper-
age rating than recommended to
avoid causing extensive damage to
the electrical system and possibly afire.
3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
1. Main fuse
2. Spare fuse
1. Fuse box
1. Headlight fuse
2. Signaling system fuse
3. Ignition fuse
4. Radiator fan fuse
5. Backup fuse (for odometer, clock and
immobilizer system)
6. Electronic fuel injection fuse
7. Spare fuse
8. Parking lighting fuse
Specified fuses:
Main fuse:
30.0 A
Headlight fuse:
20.0 A
Signaling system fuse:
10.0 A
Ignition fuse:
10.0 A
Radiator fan fuse:
20.0 A
Electronic fuel injection fuse:
10.0 A
Backup fuse:
10.0 A
Parking lighting fuse:
10.0 A
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-29
65. Install the headlight bulb cover,
and then connect the coupler.
6. Install the headlight unit by install-
ing the bolts.
7. Have a Yamaha dealer adjust the
headlight beam if necessary.
EAU32821
Replacing the tail/brake light
bulb 1. Remove the seat. (See page
3-14.)
WARNING
EWA12301
Do not touch the muffler bracket un-til the exhaust system has cooled.
2. Remove the socket (together with
the bulb) by turning it counter-
clockwise.
3. Remove the defective bulb by
pushing it in and turning it counter-
clockwise.4. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
5. Install the socket (together with the
bulb) by turning it clockwise.
6. Install the seat.
1. Do not touch the glass part of the bulb.
1. Tail/brake light bulb socket
2. Muffler bracket
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-30
6
EAU24201
Replacing a turn signal light
bulb 1. Remove the turn signal light lens
by removing the screw.
2. Remove the defective bulb by
pushing it in and turning it counter-
clockwise.
3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the
screw.CAUTION:
ECA11190
Do not overtighten the screw, other-wise the lens may break.
EAU24310
Replacing the license plate
light bulb 1. Remove the license plate light unit
by removing the screws.
2. Remove the socket (together with
the bulb) by pulling it out.3. Remove the defective bulb by pull-
ing it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with the
bulb) by pushing it in.
6. Install the license plate light unit by
installing the screws.
1. Screw
1. Screw
2. License plate light unit
1. License plate light bulb
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-31
6
EAU34400
Replacing an auxiliary light
bulb If the auxiliary light bulb burns out, re-
place it as follows.
1. Remove the headlight unit by re-
moving the bolts on each side.
2. Remove the auxiliary light socket
(together with the coupler) by turn-
ing the socket counterclockwise.
3. Remove the defective bulb by pull-
ing it out.
4. Insert a new bulb into the socket.
5. Install the auxiliary light socket (to-
gether with the coupler) by push-
ing it in and turning it clockwise.
EAU24350
Supporting the motorcycle Since this model is not equipped with a
centerstand, follow these precautions
when removing the front and rear
wheel or performing other maintenance
requiring the motorcycle to stand up-
right. Check that the motorcycle is in a
stable and level position before starting
any maintenance. A strong wooden
box can be placed under the engine for
added stability.
To service the front wheel
1. Stabilize the rear of the motorcycle
by using a motorcycle stand or, if
an additional motorcycle stand is
not available, by placing a jack un-
der the frame in front of the rear
wheel.
2. Raise the front wheel off the
ground by using a motorcycle
stand.
To service the rear wheel
Raise the rear wheel off the ground by
using a motorcycle stand or, if a motor-
cycle stand is not available, by placinga jack either under each side of the
frame in front of the rear wheel or under
each side of the swingarm.
1. Auxiliary light bulb
2. Auxiliary light bulb socketU1B3E0E0.book Page 31 Monday, February 9, 2004 2:27 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-33
67. Push down hard on the handlebar
several times to check for proper
fork operation.
EAU25080
Rear wheel
EAU34411
To remove the rear wheel
WARNING
EWA10820


It is advisable to have a Yamaha
dealer service the wheel.


Securely support the motor-
cycle so that there is no dangerof it falling over.
1. Loosen the axle nut.
2. Lift the rear wheel off the ground
according to the procedure on
page 6-31.
3. Remove the axle nut.
4. Loosen the locknut and drive chain
adjusting nut on each side of the
swingarm.5. Push the wheel forward, and then
remove the drive chain from the
rear sprocket.
1. Axle nut
2. Drive chain slack adjusting nut
3. Locknut
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-34
6
NOTE:

If the drive chain is difficult to re-
move, remove the wheel axle first,
and then lift the wheel upward
enough to remove the drive chain
from the rear sprocket.


The drive chain cannot be disas-sembled.
6. While supporting the brake caliper
and slightly lifting the wheel, pull
the wheel axle out.
NOTE:A rubber mallet may be useful to tap thewheel axle out.
7. Remove the wheel.CAUTION:
ECA11070
Do not apply the brake after the
wheel has been removed together
with the brake disc, otherwise thebrake pads will be forced shut.
EAU34430
To install the rear wheel
1. Install the wheel and the brake cal-
iper bracket by inserting the wheel
axle from the right-hand side.NOTE:

Make sure that the retainer on the
swingarm is inserted into the slot in
the brake caliper bracket.


Make sure that there is enough
space between the brake pads be-fore installing the wheel.2. Install the drive chain onto the rear
sprocket.
3. Install the axle nut, and then lower
the rear wheel so that it is on the
ground.
4. Adjust the drive chain slack. (See
page 6-19.)
5. Tighten the axle nut to the speci-
fied torque.
1. Wheel axle
2. Drive chain slack adjusting nut
3. Locknut
4. Brake caliper bracket
5. Brake caliper
1. Retainer
2. Slot
Tightening torque:
Axle nut:
120 Nm (12.0 m·kgf, 87 ft·lbf)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-37
6Engine overheating
WARNING
EWA10400


Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.


After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissingsound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
NOTE:If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolantas soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See NOTE.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
U1B3E0E0.book Page 37 Monday, February 9, 2004 2:27 PM