2000 YAMAHA DT125R brake

EAU00009
TABLE OF CONTENTS
1
2
3
4
5
6
7
8
9 GIVE SAFETY THE RIGHT OF WAY..................1-1
DESCRIPTION....................................................2-1
Left view............................................................2-1
Right view.........................................................2-2
Controls/Instruments.........................................2-3
INSTRUMENT AND CONTROL FUNCTIONS....3-1
Main switch.......................................................3-1
Indicator lights...................................................3-1
Oil level indicator circuit check..........................3-2
Speedometer....................................................3-3
Tachometer.......................................................3-3
Engine temperature gauge...............................3-4
Handlebar switches..........................................3-4
Clutch lever.......................................................3-5
Shift pedal.........................................................3-5
Front brake lever...............................................3-6
Rear brake pedal..............................................3-6
Fuel tank cap....................................................3-6
Fuel (except for Switzerland and Austria).........3-7
Fuel (for Switzerland and Austria)....................3-7
Catalyzer (for Switzerland and Austria)............3-8
Two-stroke engine oil........................................3-9
Fuel cock..........................................................3-9
Starter (choke) Ò
1Ó.........................................3-10Kick starter......................................................3-11
Steering lock...................................................3-11
Seat................................................................3-12
Helmet holder.................................................3-12
Rear shock absorber adjustment....................3-13
Rear carrier.....................................................3-14
Note on handling of the Yamaha Energy
Induction System (Y.E.I.S.).............................3-14
Y.P.V.S.
(Yamaha Power Valve System)......................3-15
Sidestand........................................................3-15
Sidestand switch operation check..................3-16
PRE-OPERATION CHECKS...............................4-1
Pre-operation check list....................................4-1
OPERATION AND IMPORTANT RIDING
POINTS................................................................5-1
Starting the engine............................................5-1
Starting a warm engine.....................................5-3
Shifting..............................................................5-4
Recommended shift points
(for Switzerland only)........................................5-4
Tips for reducing fuel consumption...................5-5
Engine break-in.................................................5-5
Parking..............................................................5-6
123
45
3MB-9-E7 12/27/00 2:52 PM Page 5

PERIODIC MAINTENANCE AND MINOR
REPAIR................................................................6-1
Tool kit..............................................................6-1
Periodic maintenance and lubrication chart......6-3
Cowling removal and installation......................6-6
Cowling A..........................................................6-6
Cowling B..........................................................6-7
Cowling C.........................................................6-8
Panel removal and installation..........................6-8
Panel D.............................................................6-9
Panel E.............................................................6-9
Spark plug.......................................................6-10
Transmission oil..............................................6-11
Cooling system...............................................6-12
Changing the coolant......................................6-13
Air filter............................................................6-15
Carburetor adjustment....................................6-16
Idle speed adjustment.....................................6-17
Throttle cable free play adjustment.................6-17
Tires................................................................6-18
Wheels............................................................6-20
Clutch lever free play adjustment...................6-21
Front brake lever free play adjustment...........6-21
Rear brake pedal height adjustment...............6-22
Brake light switch adjustment.........................6-23
Checking the front and rear brake pads.........6-23Inspecting the brake fluid level.......................6-24
Brake fluid replacement..................................6-25
Drive chain slack check..................................6-25
Drive chain slack adjustment..........................6-26
Drive chain lubrication....................................6-26
Cable inspection and lubrication.....................6-27
Throttle cable and grip lubrication...................6-27
Autolube pump adjustment.............................6-28
Brake and shift pedal lubrication.....................6-28
Brake and clutch lever lubrication...................6-28
Sidestand lubrication......................................6-29
Front fork inspection.......................................6-29
Steering inspection.........................................6-30
Wheel bearings...............................................6-30
Battery............................................................6-31
Fuse replacement...........................................6-33
Headlight bulb replacement............................6-33
Turn signal light bulb replacement..................6-35
Tail/brake light bulb replacement....................6-35
Supporting the motorcycle..............................6-36
Front wheel removal.......................................6-36
Front wheel installation...................................6-37
Rear wheel removal........................................6-38
Rear wheel installation....................................6-39
Troubleshooting..............................................6-39
Troubleshooting chart.....................................6-40
TABLE OF CONTENTS
1
2
3
4
5
6
7
8
9
6
3MB-9-E7 12/27/00 2:52 PM Page 6

DESCRIPTION
12
3
4
5
6
7
8
9
2-2
111213
14 15
Right view11.Tool kit (page 6-1)
12.Fuse (page 6-33)
13.Engine oil tank (page 3-9)
14.Rear brake pedal (page 3-6, 6-22)
15.Rear shock absorber spring
preload adjusting nut (page 3-13)
3MB-9-E7 12/27/00 2:52 PM Page 11

12
3
4
5
6
7
8
9
DESCRIPTION
2-3
16.Clutch lever (page 3-5, 6-21)
17.Left handlebar switches (page 3-4)
18.Speedometer (page 3-3)
19.Coolant temperature gauge (page 3-4)
20.Tachometer (page 3-3)21.Right handlebar switches (page 3-5)
22.Front brake lever (page 3-6, 6-27)
23.Throttle grip (page 6-17, 6-27)
24.Fuel tank cap (page 3-6)
25.Main switch (page 3-1)
16171819202122
23 24 25
Controls/Instruments
3MB-9-E7 12/27/00 2:52 PM Page 12

3-6
INSTRUMENT AND CONTROL FUNCTIONS
1
23
4
5
6
7
8
9
1
1.Front brake lever
EAU00158
Front brake leverThe front brake lever is located on
the right handlebar. Pull it toward the
handlebar to apply the front brake.
1
1.Rear brake pedal
EAU00162
Rear brake pedalThe rear brake pedal is on the right
side of the motorcycle. Press down
on the brake pedal to apply the rear
brake.
31
2
EAU00177
Fuel tank capTo open
Insert the key and turn it 1/4 turn
counterclockwise. Turn the cap 1/3
turn counterclockwise and remove it
from the tank.
To close
Put the cap in the filler neck and turn
it 1/3 turn clockwise. Lock the cap by
turning the key 1/4 turn clockwise,
and remove the key.1.Fuel tank cap
2.Unlock
3.Open
3MB-9-E7 12/27/00 2:52 PM Page 18

4-1
EAU01114
PRE-OPERATION CHECKS
1
2
34
5
6
7
8
9 Owners are personally responsible for their vehicleÕs condition. Your motorcycleÕs 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 thor-
ough visual inspection, you check the following points before each ride.
EAU00340
PRE-OPERATION CHECK LIST
ITEMCHECKSPAGE
Front brake9Check operation, free play, fluid level and vehicle for fluid leakage.
9Fill with DOT 4 (or DOT 3) brake fluid if necessary.
3-6, 6-21 ~ 6-25
Rear brake9Check operation, free play, fluid level and vehicle for fluid leakage.
9Fill with DOT 4 (or DOT 3) brake fluid if necessary.
Clutch9Check operation, condition and free play.
3-5, 6-21
9Adjust if necessary.
9Check for smooth operation.
Throttle grip and housing9Lubricate.6-17, 6-27
9Adjust throttle cable free play if necessary.
Engine oil9Check oil level.
3-9
9Fill with oil if necessary.
Transmission oil9Check oil level.
6-11 ~ 6-12
9Fill with oil if necessary.
Coolant9Check coolant level.
6-12
9Fill with coolant if necessary.
Drive chain9Check chain slack and condition.
6-26 ~ 6-27
9Adjust if necessary.
Wheels and tires9Check tire pressure, wear, damage and spoke tightness.
6-18 ~ 6-20
9Tighten spokes if necessary.
Control and meter cable9Check for smooth operation.
6-27
9Lubricate if necessary.
3MB-9-E7 12/27/00 2:52 PM Page 29

4-2
PRE-OPERATION CHECKS
1
2
34
5
6
7
8
9
ITEMCHECKSPAGE
Brake and shift pedal shafts9Check for smooth operation.
6-28 9Lubricate if necessary.
Brake and clutch lever pivots9Check for smooth operation.
9Lubricate if necessary.
Sidestand pivot9Check for smooth operation.
6-29
9Lubricate if necessary.
Chassis fasteners9Make sure that all nuts, bolts and screws are properly tightened.
Ñ
9Tighten if necessary.
Fuel tank9Check fuel level.
3-6 ~ 3-8
9Fill with fuel if necessary.
Lights, signals and
9Check for proper operation.6-33 ~ 6-35
switches
Battery9Check fluid level.
6-31 ~ 6-32
9Fill with distilled water if necessary.
NOTE:
Pre-operation checks should be made each time the motorcycle is used. Such an inspection can be accomplished in a
very short time; and the added safety it assures is more than worth the time involved.wIf any item in the Pre-Operation Check is not working properly, have it inspected and repaired before operating
the motorcycle.
3MB-9-E7 12/27/00 2:52 PM Page 30

6-3
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
EAU03686
Periodic maintenance and lubrication chart
NOTE:
8The annual checks must be performed every year, except if a kilometer-based maintenance is performed instead.
8From 30,000 km, repeat the maintenance intervals starting from 6,000 km.
8Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and
technical skills.NO.ITEMCHECK OR MAINTENANCE JOBODOMETER READING (´ 1,000 km)
ANNUAL
CHECK
16121824
1
*Fuel line¥Check fuel hoses for cracks or damage.ÖÖÖÖÖ
2Spark plug¥Replace.ÖÖÖÖÖ
3Air filter element¥Clean.ÖÖ
¥Replace.ÖÖ
4*Battery¥Check electrolyte level and specific gravity.
¥Make sure that the breather hose is properly routed.ÖÖÖÖÖ
5Clutch¥Check operation.
¥Adjust.ÖÖÖÖÖ
6*Front brake¥Check operation, fluid level and vehicle for fluid leakage.
(See NOTE on page 6-5.)ÖÖÖÖÖÖ
¥Replace brake pads.Whenever worn to the limit
7*Rear brake¥Check operation, fluid level and vehicle for fluid leakage.
(See NOTE on page 6-5.)ÖÖÖÖÖÖ
¥Replace brake pads.Whenever worn to the limit
8*Brake hoses¥Check for cracks or damage.ÖÖÖÖÖ
¥Replace. (See NOTE on page 6-5.)Every 4 years
3MB-9-E7 12/27/00 2:52 PM Page 39