2000 YAMAHA SR125 ECU

INSTRUMENT AND CONTROL FUNCTIONS
3-8
3
EAU01092
SeatTo remove the seat, remove the bolts.To install the seat, insert the projection
on the front of the seat into the holder
and push down on the seat, then tight-
en the bolts.
NOTE:@ Make sure that the seat is securely fit-
ted. @
EAU00261
Helmet holderTo open the helmet holder, insert the
key in the lock and turn it as shown.
To lock the helmet holder, turn the key
to its original position.
EW000030
WARNING
@ Never ride with a helmet in the hel-
met holder. The helmet may hit ob-
jects, causing loss of control and
possibly an accident. @
1. Bolt (´ 2)
1. Seat holder
2. Projection
1. Lock
2. Open
E_3mw.book Page 8 Monday, February 5, 2001 9:54 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
6
EW000083
WARNING
@ Proper loading of your motorcycle
is important for several characteris-
tics of your motorcycle, such as
handling, braking, performance and
safety. Do not carry loosely packed
items that can shift. Securely pack
your heaviest items close to the
center of the motorcycle, and dis-
tribute the weight evenly from side
to side. Properly adjust the suspen-
sion for your load, and check the
condition and pressure of your tires.
NEVER OVERLOAD YOUR MOTOR-
CYCLE. Make sure the total weight
of the cargo, rider, passenger, and
accessories (fairing, saddlebags,
etc. if approved for this model) does
not exceed the maximum load of the
motorcycle. Operation of an over-
loaded motorcycle could cause tire
damage, an accident, or even injury. @
Tire inspection
Always check the tires before operating
the motorcycle. If center tread depth
reaches the limit as shown, if the tire
has a nail or glass fragments in it, or if
the side wall is cracked, contact a
Yamaha dealer immediately and have
the tire replaced.CE-10ECE-26E
NOTE:@ These limits may be different by regula-
tion from country to country. If so, con-
form to the limits specified by the
regulations of your own country. @
1. Side wall
a. Tread depthFRONT
Manufacturer Size Type
Inoue 3.00-17 45P 8F
REAR
Manufacturer Size Type
Inoue 3.50-16 52P 8RA
Minimum tire tread depth
(front and rear)1.6 mm
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
6
EW000114
WARNING
@ If the center and/or sidestand does
not move smoothly, consult a
Yamaha dealer. @
EAU02939
Front fork inspectionVisual check
EW000115
WARNING
@ Securely support the motorcycle so
there is no danger of it falling over. @Check for scratches or damage on the
inner tube and excessive oil leakage
from the front fork.
Operation check
1. Place the motorcycle on a level
place.
2. Hold the motorcycle in an upright
position and apply the front brake.
3. Push down hard on the handle-
bars several times and check if the
fork rebounds smoothly.
EC000098
CAUTION:@ If any damage or unsmooth move-
ment is found with the front fork,
consult a Yamaha dealer. @
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-26
6
EAU00794
Steering inspectionPeriodically inspect the condition of the
steering. Worn out or loose steering
bearings may be dangerous. Place a
stand under the engine to raise the
front wheel off the ground. Hold the
lower end of the front forks and try to
move them forward and backward. If
any free play can be felt, ask a Yamaha
dealer to inspect and adjust the steer-
ing. Inspection is easier if the front
wheel is removed.
EW000115
WARNING
@ Securely support the motorcycle so
there is no danger of it falling over. @
EAU01144
Wheel bearingsIf there is play in the front or rear wheel
hub or if the wheel does not turn
smoothly, have a Yamaha dealer in-
spect the wheel bearings.
EAU01647
BatteryRemove panel A. (See page 6-5 for re-
moval and installation procedures.)
Check the level of the battery electro-
lyte and make sure that the terminals
are tight. Fill with distilled water if the
electrolyte level is low.1. Maximum level mark
2. Minimum level mark
E_3mw.book Page 26 Monday, February 5, 2001 9:54 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-29
6
EAU03003
Headlight bulb replacementThis motorcycle is equipped with a
quartz bulb headlight.
If the headlight bulb burns out, replace
the bulb as follows:
1. Remove the headlight unit screws.
2. Remove the connector, the head-
light unit and then the bulb holder
cover.3. Turn the bulb holder counterclock-
wise to remove it and remove the
defective bulb.
EWA00023
WARNING
@ Keep flammable products and your
hands away from the bulb while it is
on, as it is hot. Do not touch the bulb
until it cools down. @4. Put a new bulb into position and
secure it in place with the bulb
holder.
ECA00040
CAUTION:@ Avoid touching the glass part of the
bulb. Keep it free from oil; other-
wise, the transparency of the glass,
life of the bulb, and luminous flux
will be adversely affected. If oil gets
on the bulb, thoroughly clean it with
a cloth moistened with alcohol or
lacquer thinner. @5. Install the bulb holder cover, con-
nector and headlight unit.
Ask a Yamaha dealer to adjust the
headlight beam if that adjustment
is necessary.
1. Screw (´ 2)
2. Bulb holder cover
1. Bulb holder
1. Don’t touch
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-30
6
EAU00855*
Turn signal and tail/brake light
bulb replacement1. Remove the screws and the lens.
2. Push the bulb inward and turn it
counterclockwise.3. Place a new bulb in the socket.
Push the bulb inward and turn it
clockwise until it engages into the
socket.
4. Install the lens and the screws.
EC000108
CAUTION:@ Do not over-tighten the screws as
the lens may break. @
EAU00866
Front wheel removal
EW000122
WARNING
@ l
It is advisable to have a Yamaha
dealer service the wheel.
l
Securely support the motor-
cycle so there is no danger of it
falling over.
@1. Place the motorcycle on the cen-
terstand.
2. Remove the speedometer cable
from the front wheel side.
1. Screw (´ 2)
1. Screw
1. Speedometer cable
E_3mw.book Page 30 Monday, February 5, 2001 9:54 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-32
6
EAU01116*
Rear wheel removal
EW000122
WARNING
@ l
It is advisable to have a Yamaha
dealer service the wheel.
l
Securely support the motor-
cycle so there is no danger of it
falling over.
@1. Place the motorcycle on the cen-
terstand.
2. Remove the cotter pin and nut.
Then remove the brake torque rod
bolt from the brake shoe plate.
3. Remove the brake adjusting nut
and brake rod from the brake cam
lever.4. Loosen the chain adjusting plates
on each side.
5. Remove the axle nut.
6. Pull out the rear axle.
7. Push the wheel forward and re-
move the drive chain.
8. Remove the wheel assembly.
1. Adjusting nut
2. Brake rod
3. Brake torque rod
4. Cotter pin
1. Axle nut
2. Chain adjusting plate
E_3mw.book Page 32 Monday, February 5, 2001 9:54 AM