Page 7 of 94

Transmission oil................................................6-8
Coolant...........................................................6-10
Cleaning the air filter element.........................6-13
Adjusting the carburetor.................................6-15
Adjusting the engine idling speed...................6-16
Adjusting the throttle cable free play..............6-17
Tires................................................................6-17
Wheels............................................................6-20
Adjusting the clutch lever free play.................6-20
Adjusting the brake lever free play.................6-21
Adjusting the brake pedal position..................6-22
Adjusting the rear brake light switch...............6-22
Checking the front and rear brake pads.........6-23
Checking the brake fluid level.........................6-24
Changing the brake fluid.................................6-25
Drive chain slack............................................6-25
Lubricating the drive chain..............................6-26
Checking and lubricating the cables...............6-27
Checking and lubricating the throttle grip
and cable......................................................6-28
Adjusting the Autolube pump..........................6-28
Checking and lubricating the brake and shift
pedals...........................................................6-29
Checking and lubricating the brake and
clutch levers..................................................6-29
Checking and lubricating the sidestand..........6-29Lubricating the rear suspension.....................6-30
Checking the front fork...................................6-30
Checking the steering.....................................6-31
Checking the wheel bearings.........................6-32
Battery............................................................6-32
Replacing the fuse..........................................6-33
Replacing a headlight bulb.............................6-34
Replacing the tail/brake light bulb...................6-35
Replacing a turn signal light bulb....................6-36
Supporting the motorcycle..............................6-37
Front wheel.....................................................6-37
Rear wheel.....................................................6-39
Troubleshooting..............................................6-41
Troubleshooting charts...................................6-42
MOTORCYCLE CARE AND STORAGE.............7-1
Care..................................................................7-1
Storage.............................................................7-4
SPECIFICATIONS...............................................8-1
Conversion table...............................................8-5
CONSUMER INFORMATION.............................9-1
Identification numbers......................................9-1
Key identification number.................................9-1
Vehicle identification number............................9-1
Model label.......................................................9-2
TABLE OF CONTENTS
789
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Page 40 of 94
6-4
PERIODIC MAINTENANCE AND MINOR REPAIR
6
20
*Autolube pump¥Check operation.
¥Bleed if necessary.ÖÖÖÖ
21Transmission oil¥Check.ÖÖÖÖÖÖ
¥Change.ÖÖ
22*Cooling system¥Check coolant level and vehicle for coolant leakage.ÖÖÖÖÖ
¥Change.Every 3 years
23*Front and rear brake
switches¥Check operation.ÖÖÖÖÖÖ
24Moving parts and cables¥Lubricate.ÖÖÖÖÖ
25*Lights, signals and
switches¥Check operation.
¥Adjust headlight beam.ÖÖÖÖÖÖ NO.ITEMCHECK OR MAINTENANCE JOBODOMETER READING (´1,000 km)
ANNUAL
CHECK
16121824
EAU03541
NOTE:
8The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
8Hydraulic brake service
9Regularly check and, if necessary, correct the brake fluid level.
9Every two years replace the internal components of the brake master cylinder and caliper, and change the brake
fluid.
9Replace the brake hoses every four years and if cracked or damaged.
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Page 50 of 94
6-14
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9 4.Lift the front of the fuel tank to
position the fuel tank away from
the air filter case. (Do not discon-
nect the fuel hoses!)
EW000071
w8Make sure that the fuel tank is
well supported.
8Do not tilt or pull the fuel tank
too much, otherwise the fuel
hoses may come loose, which
could cause fuel leakage.
1
3
3
2
1.Relay (´2)
2.Air filter case cover
3.Screw (´7)5.Remove the relays by pulling
them off their holders, and the air
filter case cover by removing the
screws.
1
1.Sponge material6.Pull the sponge material out,
clean it with solvent, and then
squeeze the remaining solvent
out.
7.Apply oil of the recommended
type to the entire surface of the
sponge material, and then
squeeze the excess oil out.NOTE:
The sponge material should be wet
but not dripping.
Recommended oil:
2-stroke engine oil
5AE-9-E4 (ENG) 8/30/00 5:04 PM Page 49
Page 85 of 94

SPECIFICATIONS
1
2
3
4
5
6
78
9
Specifications
ModelTDR125
Dimensions
Overall length2,120 mm
(F, GB, IRL, B, P, GR, E)
2,185 mm (S, SF, D, CH, A)
Overall width840 mm
Overall height1,295 mm
Seat height850 mm
Wheel base1,405 mm
Ground clearance270 mm
Minimum turning radius2,200 mm
Basic weight (with oil and full
fuel tank)135 kg
136 kg (CH, A)
Engine
Engine typeLiquid cooled 2-stroke,
gasoline
Cylinder arrangementForward inclined single
cylinder
Displacement125 cm
3
Bore ´Stroke56.0 ´50.7 mm
Compression ratio6.6:1
Starting systemElectric starter
Lubrication systemSeparate lubrication
(Yamaha Autolube)Engine oil (2-cycle)
TypeYamalube 2 or equivalent
2-stroke engine oil
Capacity
Total amount1.2 L
Transmission oil
TypeSAE 10W30 SE motor oil
Capacity
Periodic oil change0.75 L
Total amount0.8 L
Cooling system capacity
(total amount)1.05 L
Air filterWet type element
Fuel
TypeRegular unleaded gasoline
Fuel tank capacity11 L
Reserve amount2.2 L
Carburetor
ManufacturerMIKUNI
Model ´quantityTM28SS ´1
EAU01038
SPECIFICATIONS
8-1
5AE-9-E4 (ENG) 8/30/00 5:04 PM Page 84