2000 YAMAHA TTR125 brake

SPEC
2 - 14
MAINTENANCE SPECIFICATIONS
NOTE:
1. First, tighten the ring nut approximately 38 Nm (3.8 m • kg, 27 ft • lb) by using the ring nut
wrench and turn the steering right and left a few times; then loosen the ring nut one turn.
2. Retighten the ring nut 20 Nm (2.0 m • kg, 14 ft • lb).Part to be tightened Thread size Q’tyTightening torque
Nm m•kg ft•lb
Upper bracket and inner tube M8 ´ 1.25 2 25 2.5 18
Lower bracket and inner tube M10 ´ 1.25 2 60 6.0 43
Upper bracket and steering stem M22 ´ 1.0 1 110 11.0 80
Handlebar upper holder and upper bracket M8 ´ 1.25 4 14 1.4 10
Steering stem and ring nut M25 ´ 1.0 1 Refer to NOTE.
Front fork and cap bolt M25 ´ 1.0 2 23 2.3 17
Front fork and damper rod M10 ´ 1.0 2 23 2.3 17
Front fork and cable guide M6 ´ 1.0 1 7 0.7 5.1
Number plate M6 ´ 1.0 1 7 0.7 5.1
Starter knob M11 ´ 1.25 1 1 0.1 0.7
Starter knob stay M6 ´ 1.0 2 10 1.0 7.2
Grip cap upper and lower M5 ´ 0.8 2 4 0.4 2.9
Throttle cable cap M4 ´ 0.7 2 2 0.2 1.4
Brake lever mounting (bolt) M6 ´ 1.0 1 7 0.7 5.1
Brake lever mounting (nut) M6 ´ 1.0 1 7 0.7 5.1
Brake lever holder M5 ´ 0.8 2 4 0.4 2.9
Clutch lever mounting (bolt) M6 ´ 1.0 1 7 0.7 5.1
Clutch lever mounting (nut) M6 ´ 1.0 1 7 0.7 5.1
Clutch lever holder M5 ´ 0.8 2 4 0.4 2.9
Front wheel axle and axle nut M12 ´ 1.25 1 45 4.5 32
Front brake camshaft lever and camshaft M6 ´ 1.0 1 10 1.0 7.2
Rear wheel axle and axle nutM12 ´ 1.25 1 60 6.0 43
Rear brake camshaft lever and camshaft M6 ´ 1.0 1 10 1.0 7.2
Brake pedal mounting M10 ´ 1.25 1 30 3.0 22
Brake pedal position locknut M6 ´ 1.0 1 7 0.7 5.1
Front wheel nipple (spoke) — 36 2 0.2 1.4
Rear wheel nipple (spoke) — 36 3 0.3 2.2
Driven sprocket and wheel hub M8 ´ 1.25 4 26 2.6 19
Sidestand mounting (nut) M10 ´ 1.25 1 43 4.3 31
Engine mounting:
Engine bracket (front) and frame M8 ´ 1.25 2 40 4.0 29
Engine bracket (front) and engine M8 ´ 1.25 2 40 4.0 29
Engine bracket (upper) and frame M8 ´ 1.25 2 40 4.0 29
Engine bracket (upper) and cylinder head M8 ´ 1.25 1 40 4.0 29
Engine and frame (rear) M8 ´ 1.25 2 40 4.0 29
Pivot shaft and nut M12 ´ 1.25 1 53 5.3 38
Relay arm and swingarm M12 ´ 1.25 1 53 5.3 38

2 - 18
SPEC

CABLE ROUTING DIAGRAM
EC240000
CABLE ROUTING DIAGRAM
1
Fuel tank breather hose
2
CDI unit
3
CDI unit band
4
Clamp
5
CDI magneto lead
6
Air vent hose
7
Wire harness
8
Engine stop switch lead
9
Cable guide
0
Brake cable

Fit the CDI unit band over the CDI unit bracket till it stops.
õ
Clamp the ignition coil lead.
‚
Clamp the wire harness coupler.
ë
Clamp the CDI magneto lead, throttle cable and starter cable.
ä
Clamp the CDI magneto lead so that it does not contact the push lever.
ì
Pass the air vent hoses between the engine and swingarm.
í
Clamp the wire harness and engine stop switch lead.
î
Pass the brake cable into the cable guides.

2 - 20
SPEC

CABLE ROUTING DIAGRAM
1
Engine stop switch lead
2
Engine stop switch
3
Fuel tank breather hose
4
Clamp
5
Brake cable
6
Clutch cable
7
Throttle cable

Pass the engine stop switch lead in the middle of the clutch holder.
õ
Clamp the engine stop switch lead to the handlebar to 3 clicks.
‚Pass the brake cable in front of the number plate and through the cable
guide.
ëPass the clutch cable in back of the number plate.
äInsert the fuel tank breather hose into the hole in the starter knob stay
more the 30 mm (1.18 in).
ìClamp the throttle cable adjuster cover to the handlebar with the clamp
ends downward.

3 - 1
INSP
ADJ

MAINTENANCE INTERVALS
EC300000
REGULAR INSPECTION AND ADJUSTMENTS
MAINTENANCE INTERVALS
The following schedule is intended as a general guide to maintenance and lubrication. Bear in mind
that such factors as weather, terrain, geographical location, and individual usage will alter the
required maintenance and lubrication intervals. If you are a doubt as to what intervals to follow in
maintaining and lubricating your machine, consult your Yamaha dealer.
Dealer
NoteItem Checks and maintenance jobsInitial Every
10 hours
(1 month)60 hours
(6 months)120 hours
(12 months)
*
Fuel lineCheck fuel hoses for cracks or damage.
Replace if necessary.
Spark plugCheck condition.
Clean, regap or replace if necessary.
*
ValvesCheck valve clearance.
Adjust if necessary.
Air filter Clean or replace element if necessary.
*
CarburetorCheck engine idling speed and starter operation.
Adjust if necessary.
Exhaust systemsCheck for leakage.
Retighten if necessary.
Replace gasket if necessary.
Engine oilCheck oil level and vehicle for oil leakage.
Correct if necessary.
Change. (Warm engine before draining.)
ClutchCheck operation.
Adjust or replace cable.
*
Front brakeCheck operation.
Adjust brake lever free play and replace brake
shoes if necessary.Every ride
*
Rear brakeCheck operation.
Adjust brake pedal free play and replace brake
shoes if necessary.Every ride
*
WheelsCheck balance, runout, spoke tightness and for
damage.
Tighten spokes and rebalance, replace if
necessary.
*
TiresCheck tread depth and for damage.
Replace if necessary.
Check air pressure.
Correct if necessary.
*
Wheel bearingsCheck bearing for looseness or damage.
Replace if necessary.
*
SwingarmCheck swingarm pivoting point for play.
Correct if necessary.
Lubricate with lithium soap base grease.
Drive chainCheck chain slack.
Adjust if necessary. Make sure that the rear wheel
is properly aligned.
Clean and lubricate.Every ride
*
Steering bearingsCheck bearing play and steering for roughness.
Correct accordingly.
Lubricate with lithium soap base grease every 120
hours.
SidestandCheck operation.
Lubricate and repair if necessary.
3
3

3 - 3
INSP
ADJ

PRE-OPERATION INSPECTION AND MAINTENANCE
PRE-OPERATION INSPECTION AND MAINTENANCE
Before riding for break-in operation or practice, make sure the machine is in good operating condi-
tion.
Before using this machine, check the following points.
GENERAL INSPECTION AND MAINTENANCE
Item Routine Page
FuelCheck that a fresh gasoline is filled in the fuel tank. Check the
fuel line for leakage.P.1-12
Engine oilCheck that the oil level is correct. Check the crankcase for leak-
age.P.3-7 ~ 10
Gear shifter and clutchCheck that gears can be shifted correctly in order and that the
clutch operates smoothly.P.3-4
Throttle grip/housingCheck that the throttle grip operation and free play are correctly
adjusted. Lubricate the throttle grip and housing, if necessary.P.3-4 ~ 5
BrakesCheck the play of front and rear brake and effect of front and
rear brake.P.3-15 ~ 16
Drive chainCheck chain slack and alignment. Check that the chain is lubri-
cated properly.P.3-17 ~ 18
WheelsCheck for excessive wear and tire pressure. Check for loose
spokes and have no excessive play.P.3-20 ~ 21
SteeringCheck that the handlebar can be turned smoothly and have no
excessive play.P.3-21 ~ 23
Front forks and rear shock
absorber assemblyCheck that they operate smoothly and there is no oil leakage. P.3-19 ~ 20
Cables (wires)Check that the clutch and throttle cables move smoothly. Check
that they are not caught when the handlebars are turned or
when the front forks travel up and down.—
Muffler Check that the muffler is tightly mounted and has no cracks. P.4-2
Sprocket Check that the driven sprocket tightening nut is not loose. P.3-16
Lubrication Check for smooth operation. Lubricate if necessary. P.3-24
Bolts and nuts Check the chassis and engine for loose bolts and nuts. —
Lead connectorsCheck that the CDI magneto, CDI unit, and ignition coil are con-
nected tightly.P.1-5

3 - 15
INSP
ADJ
CHASSIS
FRONT BRAKE ADJUSTMENT
1. Check:
lBrake lever free play a
Out of specification ® Adjust.
2. Adjust:
lBrake lever free play
NOTE:
For minute adjustment, loosen the locknut 2
on the lever side and adjust with the adjuster
3.
CAUTION:
Make sure that there is no brake drag after
adjusting the brake lever free play.
Brake lever free play a:
10 ~ 15 mm (0.39 ~ 0.59 in)
Brake lever free play adjustment steps:
lLoosen the locknuts 1.
lTurn the locknuts until free play a is
within the specified limits by changing their
tightening position.
lTighten the locknuts.
REAR BRAKE ADJUSTMENT
1. Check:
lBrake pedal free play a
Out of specification ® Adjust.
2. Adjust:
lBrake pedal free play
CAUTION:
Make sure that there is no brake drag after
adjusting the brake pedal play.
Brake pedal free play a:
20 ~ 30 mm (0.79 ~ 1.18 in)
Brake pedal free play adjustment step:
lTurn the adjuster 1 until free play a is
within the specified limits.
CHASSIS/FRONT BRAKE ADJUSTMENT/
REAR BRAKE ADJUSTMENT

3 - 16
INSP
ADJBRAKE PEDAL HEIGHT ADJUSTMENT/BRAKE SHOE
INSPECTION/SPROCKETS INSPECTION
BRAKE PEDAL HEIGHT ADJUSTMENT
1. Check:
lBrake pedal height a
Out of specification ® Adjust.
Brake pedal height a:
1 mm (0.04 in)
2. Adjust:
lBrake pedal height
Pedal height adjustment steps:
lLoosen the locknut 1.
lTurn the adjusting bolt 2 until the pedal
height a is within specified height.
lTighten the locknut.
BRAKE SHOE INSPECTION
1. Inspect:
lBrake shoe lining wear limit
Front
õRear
Brake shoe lining wear limit checking
steps:
lFully pull in the brake lever (push down
the pedal) and hold it in position.
lThen check the brake shoe wear indicator
1 is within the wear limit a.
Outside the limit ® Replace the brake
shoe.
Refer to “FRONT WHEEL AND FRONT
BRAKE” or “REAR WHEEL AND REAR
BRAKE” section in the CHAPTER 5.

õ
SPROCKETS INSPECTION
1. Inspect:
lSprocket teeth a
Excessive wear ® Replace.
NOTE:
Replace the drive, driven sprockets and drive
chain as a set.

3 - 19
INSP
ADJ
FRONT FORK INSPECTION/
REAR SHOCK ABSORBER ASSEMBLY INSPECTION/
REAR SHOCK ABSORBER SPRING PRELOAD ADJUSTMENT
EC36C000
FRONT FORK INSPECTION
1. Inspect:
lFront fork smooth action
Operate the front brake and stroke the
front fork.
Unsmooth action/oil leakage ® Repair
or replace.
REAR SHOCK ABSORBER ASSEMBLY
INSPECTION
1. Inspect:
lSwingarm smooth action
Abnormal noise/unsmooth action ®
Grease the pivoting points or repair the
pivoting points.
Damage/oil leakage ® Replace.
REAR SHOCK ABSORBER SPRING
PRELOAD ADJUSTMENT
1. Elevate the rear wheel by placing the
suitable stand under the engine.
2. Remove:
lLeft side cover
3. Loosen:
lLocknut 1
4. Adjust:
lSpring preload
By turning the adjuster 2.
Stiffer ®Increase the spring preload.
(Turn the adjuster 2 in.)
Softer ®Decrease the spring preload.
(Turn the adjuster 2 out.)
Spring length (installed) a:
Standard length Extent of adjustment
165 mm (6.50 in)155 ~ 175 mm
(6.10 ~ 6.89 in)