Page 54 of 88

PERIODIC MAINTENANCE AND MINOR REPAIR
6-22
6
EAU00713
Adjusting the rear brake light
switch The rear brake light switch, which is ac-
tivated by the brake pedal, is properly
adjusted when the brake light comes
on just before braking takes effect. If
necessary, adjust the brake light switch
as follows.
Turn the adjusting nut while holding the
rear brake light switch in place. To
make the brake light come on earlier,
turn the adjusting nut in direction
a. To
make the brake light come on later,
turn the adjusting nut in direction
b.
EAU00720
Checking the front brake pads
and rear brake shoes The front brake pads and the rear
brake shoes must be checked for wear
at the intervals specified in the periodic
maintenance and lubrication chart.
EAU00725
Front brake pads
Each front brake pad is provided with a
wear indicator groove, which allows
you to check the brake pad wear with-
out having to disassemble the brake.
To check the brake pad wear, check
the wear indicator groove. If a brake
pad has worn to the point that the wear
indicator groove has almost disap-
peared, have a Yamaha dealer replace
the brake pads as a set.
1. Rear brake light switch
2. Rear brake light switch adjusting nut
1. Front brake pad wear indicator grooveFront
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Page 58 of 88

PERIODIC MAINTENANCE AND MINOR REPAIR
6-26
6
EC000096
CAUTION:_ 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 the
specified limits. _3. Tighten both locknuts, and then
tighten the axle nut to the specified
torque.
4. Adjust the brake pedal free play.
(See page 6-21 for brake pedal
free play adjustment procedures.)
EW000103
WARNING
_ After adjusting the brake pedal free
play, check the operation of the
brake light. _
EAU03006
Lubricating the drive chain The drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly wear
out, especially when riding in dusty or
wet areas. Service the drive chain as
follows.
EC000097
CAUTION:_ The drive chain must be lubricated
after washing the motorcycle or
riding in the rain. _1. Clean the drive chain with kero-
sene and a small soft brush.
ECA00053
CAUTION:_ To prevent damaging the O-rings,
do not clean the drive chain with
steam cleaners, high-pressure
washers or inappropriate solvents. _
2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive
chain with a special O-ring chain
lubricant.
ECA00052
CAUTION:_ Do not use engine oil or any other
lubricants for the drive chain, as
they may contain substances that
could damage the O-rings. _
Tightening torque:
Axle nut:
104 Nm (10.4 m·kg)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-32
6
EAU01749
Replacing the fuses The fuse boxes are located behind
panel B. (See page 6-6 for panel re-
moval and installation procedures.)
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.
EC000103
CAUTION:_ Do not use a fuse of a higher amper-
age rating than recommended to
avoid causing extensive damage to
the electrical system and possibly a
fire. _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. Fuse box (´ 2)
1. Main fuse
2. Spare main fuse
3. Headlight fuse
4. Ignition fuse
5. Signaling system fuse
6. Carburetor heater fuse
7. Spare fuse (´ 2)
Specified fuses:
Main fuse: 30 A
Ignition fuse: 10 A
Signaling system fuse: 10 A
Headlight fuse: 15 A
Carburetor heater fuse: 10 A
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Page 65 of 88
PERIODIC MAINTENANCE AND MINOR REPAIR
6-33
6
EAU03188
Replacing the headlight bulb This motorcycle is equipped with a
quartz bulb headlight. If the headlight
bulb burns out, replace it as follows.
1. Remove the headlight unit by re-
moving the screws.2. Disconnect the headlight coupler,
and then remove the headlight unit
and bulb cover.1. Screw (´ 2)
1. Headlight coupler
1. Headlight bulb cover
E_5kr.book Page 33 Tuesday, September 12, 2000 4:46 PM
Page 66 of 88
PERIODIC MAINTENANCE AND MINOR REPAIR
6-34
63. Unhook the headlight bulb holder,
and then remove the defective
bulb.
EW000119
WARNING
_ Headlight bulbs get very hot. There-
fore, keep flammable products away
from a lit headlight bulb, and do not
touch the bulb until it has cooled
down. _4. Place a new bulb into position, and
then secure it with the bulb holder.
EC000105
CAUTION:_ Do not touch the glass part of the
headlight bulb to keep it free from
oil, otherwise the transparency of
the glass, the luminosity of the bulb,
and the bulb life will be adversely af-
fected. Thoroughly clean off any dirt
and fingerprints on the headlight
bulb using a cloth moistened with
alcohol or thinner. _5. Install the bulb cover, and then
connect the coupler.6. Install the headlight unit by install-
ing the screws.
7. Have a Yamaha dealer adjust the
headlight beam if necessary.
1. Headlight bulb holder
1. Do not touch this area.
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Page 67 of 88
PERIODIC MAINTENANCE AND MINOR REPAIR
6-35
6
EAU01623
Replacing the tail/brake light
bulb 1. Remove the tail/brake light lens by
removing the screws.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
screws.
EC000108
CAUTION:_ Do not overtighten the screws, oth-
erwise the lens may break. _
1. Screw (´ 2)
1. Tail/brake light bulb
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Page 68 of 88

PERIODIC MAINTENANCE AND MINOR REPAIR
6-36
6
EAU03218
Replacing a turn signal light
bulb 1. Remove the turn signal lens by re-
moving the screws.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
screws.
EC000108
CAUTION:_ Do not overtighten the screws, oth-
erwise the lens may break. _
EAU01579
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 mainte-
nance requiring the motorcycle to
stand upright. Check that the motor-
cycle is in a stable and level position
before starting any maintenance. A
strong wooden box can be placed un-
der 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.
1. Screw (´ 2)
1. Turn signal light bulb
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Page 72 of 88

PERIODIC MAINTENANCE AND MINOR REPAIR
6-40
6
EAU03190
To install the rear wheel
1. Insert the wheel axle from the left-
hand side, and then install the
drive chain onto the rear sprocket.
2. Install the axle nut, and then lower
the rear wheel so that it is on the
ground.
3. Install the brake rod onto the brake
camshaft lever, and then install
the brake pedal free play adjusting
nut onto the brake rod.
4. Connect the brake torque rod to
the brake shoe plate by installing
the bolt and the nut, and then tight-
en the bolt to the specified torque.
5. Adjust the drive chain slack. (See
page 6-25 for drive chain slack ad-
justment procedures.)6. Tighten the axle nut to the speci-
fied torque.
7. Adjust the brake pedal position
and free play. (See page 6-20 for
brake pedal position and free play
adjustment procedures.)
EW000103
WARNING
_ After adjusting the brake pedal free
play, check the operation of the
brake light. _
EAU01008
Troubleshooting Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills. Tightening torque:
Brake torque rod bolt:
23 Nm (2.3 m·kg)
Tightening torque:
Axle nut:
104 Nm (10.4 m·kg)
E_5kr.book Page 40 Tuesday, September 12, 2000 4:46 PM