2000 YAMAHA SR125 tires

TABLE OF CONTENTS
Throttle cable free play adjustment .................. 6-12
Cam chain adjustment ..................................... 6-12
Valve clearance adjustment ............................. 6-13
Tires ................................................................. 6-13
Wheels ............................................................. 6-15
Clutch lever free play adjustment..................... 6-16
Front brake lever free play adjustment ............ 6-16
Rear brake pedal height and free play
adjustment .................................................... 6-17
Brake light switch adjustment .......................... 6-18
Checking the front brake pads and
rear brake shoes .......................................... 6-19
Inspecting the brake fluid level......................... 6-20
Brake fluid replacement ................................... 6-20
Drive chain slack check ................................... 6-21
Drive chain slack adjustment ........................... 6-22
Drive chain lubrication...................................... 6-23
Cable inspection and lubrication ...................... 6-23
Throttle cable and grip lubrication .................... 6-23
Brake and shift pedal lubrication ...................... 6-24
Brake and clutch lever lubrication .................... 6-24
Center and sidestand lubrication ..................... 6-24
Front fork inspection ........................................ 6-25
Steering inspection .......................................... 6-26
Wheel bearings ................................................ 6-26
Battery.............................................................. 6-26
Fuse replacement ............................................ 6-28
Headlight bulb replacement ............................. 6-29Turn signal and tail/brake light bulb
replacement.................................................. 6-30
Front wheel removal ........................................ 6-30
Front wheel installation .................................... 6-31
Rear wheel removal ......................................... 6-32
Rear wheel installation ..................................... 6-33
Troubleshooting ............................................... 6-33
Troubleshooting chart ...................................... 6-34
MOTORCYCLE CARE AND STORAGE ............. 7-1
Care ................................................................... 7-1
Storage .............................................................. 7-4
SPECIFICATIONS ............................................... 8-1
Specifications ..................................................... 8-1
How to use the conversion table ........................ 8-5
CONSUMER INFORMATION.............................. 9-1
Identification number records............................. 9-1
Key identification number................................... 9-1
Vehicle identification number ............................. 9-1
Model label......................................................... 9-2
789
E_3mw.book Page 2 Monday, February 5, 2001 9:54 AM

4-1
4
EAU01114
4-PRE-OPERATION CHECKS
Owners are personally responsible for their vehicle’s condition. Your motorcycle’s vital functions can start to deteriorate
quickly and unexpectedly, even if it remains unused (for instance, if it is exposed to the elements). Any damage, fluid leak or
loss of tire pressure could have serious consequences. Therefore, it is very important that, in addition to a thorough visual in-
spection, you check the following points before each ride.
EAU00340
PRE-OPERATION CHECK LIST
ITEM CHECKS PAGE
Front brake• Check operation, free play, fluid level and fluid leakage.
• Fill with DOT 4 (or DOT 3) brake fluid if necessary.
6-16 ~ 6-20
Rear brake• Check operation, condition and free play.
• Adjust if necessary.
Clutch• Check operation, condition and free play.
• Adjust if necessary.6-16
Throttle grip and housing• Check for smooth operation.
• Lubricate if necessary.6-23
Engine oil• Check oil level.
• Fill with oil if necessary.6-8 ~ 6-9
Drive chain• Check chain slack and condition.
• Adjust if necessary.6-21 ~ 6-23
Wheels and tires• Check tire pressure, wear, damage and spoke tightness.
• Tighten spokes if necessary.6-13 ~ 6-15, 6-30 ~ 6-33
Control and meter cables• Check for smooth operation.
• Lubricate if necessary.6-23
Brake and shift pedal
shafts• Check for smooth operation.
• Lubricate if necessary.6-24
Brake and clutch lever
pivots• Check for smooth operation.
• Lubricate if necessary.6-24
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
6
10
*Wheels• Check runout, spoke tightness and for damage.
• Tighten spokes if necessary.ÖÖÖÖ
11*Tires• Check tread depth and for damage.
• Replace if necessary.
• Check air pressure.
• Correct if necessary.ÖÖÖÖ
12*Wheel bearings• Check bearing for looseness or damage.ÖÖÖÖ
13*Swingarm• Check operation and for excessive play.ÖÖÖÖ
14 Drive chain• Check chain slack.
• Make sure that the rear wheel is properly aligned.
• Clean and lubricate.Every 1,000 km and after washing
the motorcycle or riding in the rain.
15*Steering bearings• Check bearing play and steering for roughness.ÖÖÖÖÖ
• Lubricate with lithium-soap-based grease. Every 24,000 km
16*Chassis fasteners• Make sure that all nuts, bolts and screws are properly tightened.ÖÖÖÖ Ö
17 Sidestand, centerstand• Check operation.
• Lubricate.ÖÖÖÖ Ö
18*Sidestand switch• Check operation.ÖÖÖÖÖ Ö
19*Front fork• Check operation and for oil leakage.ÖÖÖÖ
20*Shock absorber
assemblies• Check operation and shock absorbers for oil leakage.ÖÖÖÖ
21*Carburetor• Check starter (choke) operation.
• Adjust engine idling speed.ÖÖÖÖÖ Ö
22 Engine oil• Change.ÖÖÖÖÖ Ö
23 Engine oil filter element•Clean.ÖÖÖ
24*Front and rear brake
switches• Check operation.ÖÖÖÖÖ Ö
25 Moving parts and cables• Lubricate.ÖÖÖÖ Ö NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (´1,000 km)
ANNUAL
CHECK
1 6 12 18 24
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
6
EAU00637
Valve clearance adjustmentThe correct valve clearance changes
with use, resulting in improper fuel/air
supply or engine noise. To prevent this,
the valve clearance must be adjusted
regularly. This adjustment however,
should be left to a professional
Yamaha service technician.
EAU00647
TiresTo ensure maximum performance,
long service, and safe operation, note
the following:
Tire air pressure
Always check and adjust the tire pres-
sure before operating the motorcycle.
EW000082
WARNING
@ Tire inflation pressure should be
checked and adjusted when the
temperature of the tire equals the
ambient air temperature. Tire infla-
tion pressure must be adjusted ac-
cording to total weight of cargo,
rider, passenger, and accessories
(fairing, saddlebags, etc. if approved
for this model), and vehicle speed. @
CE-32EMaximum load* 160 kg
Cold tire pressure Front Rear
Up to 90 kg*175 kPa
(1.75 kg/cm
2,
1.75 bar)200 kPa
(2.00 kg/cm
2,
2.00 bar)
90 kg load ~
Maximum load*175 kPa
(1.75 kg/cm
2,
1.75 bar)225 kPa
(2.25 kg/cm
2,
2.25 bar)
* Load is the total weight of cargo, rider, passenger
and accessories.
E_3mw.book Page 13 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
E_3mw.book Page 14 Monday, February 5, 2001 9:54 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-15
6
EAU00681
WARNING
@ l
Operating the motorcycle with
excessively worn tires decrease
riding stability and can lead to
loss of control. Have excessive-
ly worn tires replaced by a
Yamaha dealer immediately.
Brakes, tires, and related wheel
parts replacement should be
left to a Yamaha Service Techni-
cian.
l
Patching a punctured tube is
not recommended. If it is abso-
lutely necessary to do so, use
great care and replace the tube
as soon as possible with a good
quality replacement.
@
EAU00685
WheelsTo ensure maximum performance,
long service, and safe operation, note
the following:l
Always inspect the wheels before
a ride. Check for cracks, bends or
warpage of the wheel. Be sure the
spokes are tight and undamaged.
If any abnormal condition exists in
a wheel, consult a Yamaha dealer.
Do not attempt even small repairs
to the wheel. If a wheel is de-
formed or cracked, it must be re-
placed.
l
Tires and wheels should be bal-
anced whenever either one is
changed or replaced. Failure to
have a wheel balanced can result
in poor performance, adverse han-
dling characteristics, and short-
ened tire life.
l
Ride at moderate speeds after
changing a tire since the tire sur-
face must first be broken in for it to
develop its optimal characteristics.
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MOTORCYCLE CARE AND STORAGE
7-3
7 After riding in the rain, near the sea or
on salt-sprayed roadsSince sea salt or salt sprayed on the
roads in the winter are extremely corro-
sive in combination with water, carry
out the following steps after each ride
in the rain, near the sea or on salt-
sprayed roads. (Salt sprayed in the
winter may remain on the roads well
into spring.)
1. Clean your motorcycle with cold
water and soap after the engine
has cooled down.
ECA00012
CAUTION:@ Do not use warm water since it in-
creases the corrosive action of the
salt. @2. Be sure to apply a corrosion pro-
tection spray on all (even chrome-
and nickel-plated) metal surfaces
to prevent corrosion.After cleaning
1. Dry the motorcycle with a chamois
or an absorbing cloth.
2. Immediately dry the drive chain
and lubricate it to prevent it from
rusting.
3. Use a chrome polish to shine
chrome, aluminum and stainless-
steel parts, including the exhaust
system. (Even the thermally in-
duced discoloring of stainless-
steel exhaust systems can be re-
moved through polishing.)
4. To prevent corrosion, it is recom-
mended to apply a corrosion pro-
tection spray on all (even chrome-
and nickel-plated) metal surfaces.
5. Use spray oil as a universal clean-
er to remove any remaining dirt.
6. Touch up minor paint damage
caused by stones, etc.
7. Wax all painted surfaces.
8. Let the motorcycle dry completely
before storing it or covering it.
EWA00001
WARNING
@ Make sure that there is no oil or wax
on the brakes and tires. If neces-
sary, clean the brake discs and lin-
ings with a regular brake disc
cleaner or acetone, and wash the
tires with warm water and mild soap.
Then, carefully test the motorcycle
for its braking performance and cor-
nering behavior. @
E_3mw.book Page 3 Monday, February 5, 2001 9:54 AM

MOTORCYCLE CARE AND STORAGE
7-5
7 a. Remove the spark plug cap and
spark plug.
b. Pour a teaspoonful of engine oil
into the spark plug bore.
c. Install the spark plug cap onto the
spark plug and place the spark
plug on the cylinder head so that
the electrodes are grounded. (This
will limit sparking during the next
step.)
d. Turn the engine over several times
with the starter. (This will coat the
cylinder wall with oil.)
e. Remove the spark plug cap from
the spark plug, install the spark
plug and then the spark plug cap.
EWA00003
WARNING
@ When turning the engine over, be
sure to ground the spark plug elec-
trodes to prevent damage or injury
from sparking. @
6. Lubricate all control cables and
the pivoting points of all levers and
pedals as well as of the sidestand/
centerstand.
7. Check and, if necessary, correct
the tire air pressure, then raise the
motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
8. Cover up the muffler outlet with a
plastic bag to prevent moisture
from entering.9. Remove the battery and fully
charge it. Store it in a cool, dry
place and recharge it once a
month. Do not store the battery in
an excessively cold or warm place
(less than 0 °C or more than
30 °C). For more information, see
“Battery storage” in the chapter
“PERIODIC MAINTENANCE AND
MINOR REPAIRS”.
NOTE:@ Make any necessary repairs before
storing the motorcycle. @
E_3mw.book Page 5 Monday, February 5, 2001 9:54 AM