2003 YAMAHA TTR125 lock

SPEC
2 - 18
MAINTENANCE SPECIFICATIONS
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each ride.Part to be tightened Thread size Q’tyTightening torque
Nm m•kg ft•lb
Relay arm and connecting arm M10 × 1.25 1 35 3.5 25
Connecting arm and frame M10 × 1.25 1 35 3.5 25
Rear shock absorber assembly and frame M12 × 1.25 1 53 5.3 38
Rear shock absorber assembly and relay arm M10 × 1.25 1 35 3.5 25
Rear shock absorber and locknut (preload) M46 × 1.5 1 42 4.2 30
Drive chain tensioner (upper) M8 × 1.25 1 23 2.3 17
Drive chain tensioner (lower) M6 × 1.0 1 7 0.7 5.1
Drive chain support and swingarm M6 × 1.0 2 7 0.7 5.1
Drive chain guide and swingarm M6 × 1.0 2 7 0.7 5.1
Drive chain guard mounting M6 × 1.0 2 7 0.7 5.1
Fuel tank mounting M6 × 1.0 2 10 1.0 7.2
Fuel tank and fuel cock M6 × 1.0 2 7 0.7 5.1
Fuel tank and fuel tank bracket M6 × 1.0 4 7 0.7 5.1
Front fender mounting M6 × 1.0 4 7 0.7 5.1
Rear fender mounting M6 × 1.0 4 7 0.7 5.1
Flap guard mounting M6 × 1.0 2 4 0.4 2.9
Left side cover mounting M6 × 1.0 2 7 0.7 5.1
Seat mounting M6 × 1.0 2 7 0.7 5.1

SPEC
2 - 21
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 23 2.3 17
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 brake hose holder M6 × 1.0 2 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
Front brake master cylinder M6 × 1.0 2 9 0.9 6.5
Front brake master cylinder 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 adjuster and locknut M6 × 0.75 1 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 brake master cylinder and joint M10 × 1.25 1 26 2.6 19
Front brake hose and joint M10 × 1.25 1 14 1.4 10
Front brake hose union bolt M10 × 1.25 1 26 2.6 19
Front brake caliper and front fork M8 × 1.25 2 30 3.0 22
Brake caliper support bolt M8 × 1.25 1 22 2.2 16
Front brake caliper and bleed screw M7 × 1.0 1 6 0.6 4.3
Front wheel axle and axle nut M12 × 1.25 1 45 4.5 32
Front brake disc and wheel hub M6 × 1.0 4 12 1.2 8.7
Rear wheel axle and axle nut M12 × 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

SPEC
2 - 22
MAINTENANCE SPECIFICATIONS
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each ride.Part to be tightened Thread size Q’tyTightening torque
Nm m•kg ft•lb
Bead stopper M8 × 1.25 1 3 0.3 2.2
Driven sprocket (nut) M10 × 1.25 4 43 4.3 31
Driven sprocket (stud) M10 × 1.25 4 30 3.0 22
Sidestand mounting (nut) M10 × 1.25 1 44 4.4 32
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
Relay arm and connecting arm M10 × 1.25 1 35 3.5 25
Connecting arm and frame M10 × 1.25 1 35 3.5 25
Rear shock absorber assembly and frame M12 × 1.25 1 53 5.3 38
Rear shock absorber assembly and relay arm M10 × 1.25 1 35 3.5 25
Rear shock absorber and locknut (preload) M46 × 1.5 1 42 4.2 30
Drive chain tensioner (upper) M8 × 1.25 1 23 2.3 17
Drive chain tensioner (lower) M6 × 1.0 1 7 0.7 5.1
Drive chain support and swingarm M6 × 1.0 2 7 0.7 5.1
Drive chain guide and swingarm M6 × 1.0 2 7 0.7 5.1
Drive chain guard mounting M6 × 1.0 2 7 0.7 5.1
Fuel tank mounting M6 × 1.0 2 10 1.0 7.2
Fuel tank and fuel cock M6 × 1.0 2 7 0.7 5.1
Fuel tank and fuel tank bracket M6 × 1.0 4 7 0.7 5.1
Front fender mounting M6 × 1.0 4 7 0.7 5.1
Rear fender mounting M6 × 1.0 4 7 0.7 5.1
Flap guard mounting M6 × 1.0 2 4 0.4 2.9
Left side cover mounting M6 × 1.0 2 7 0.7 5.1
Seat mounting M6 × 1.0 2 7 0.7 5.1

3 - 4
INSP
ADJENGINE/CLUTCH ADJUSTMENT/
THROTTLE CABLE ADJUSTMENT
EC350000
ENGINE
CLUTCH ADJUSTMENT
1. Check:
Clutch lever free play a
Out of specification → Adjust.
Clutch lever free play a:
10 ~ 15 mm (0.39 ~ 0.59 in)
2. Adjust:
Clutch lever free play
NOTE:
Make minute adjustment on the lever side.
After adjustment, check proper operation of
clutch lever. Clutch lever free play adjustment steps:
Loosen the locknut 1.
Turn the adjuster 2 until free play a is
within the specified limits.
Tighten the locknut.
EC35A001
THROTTLE CABLE ADJUSTMENT
1. Check:
Throttle grip free play a
Out of specification → Adjust.
Throttle grip free play a:
3 ~ 5 mm (0.12 ~ 0.20 in)
2. Adjust:
Throttle grip free play
Throttle grip free play adjustment steps:
Loosen the locknut 1.
Turn the adjuster 2 until the specified free
play is obtained.
Tighten the locknut.

3 - 12
INSP
ADJ
VALVE CLEARANCE INSPECTION AND ADJUSTMENT
4. Check:
Valve clearance
Out of specification → Adjust.
Valve clearance (cold):
Intake valve:
0.08 ~ 0.12 mm
(0.0031 ~ 0.0047 in)
Exhaust valve:
0.10 ~ 0.14 mm
(0.0039 ~ 0.0055 in)
Checking steps:
Turn the crankshaft counterclockwise with
a wrench.
Align the T.D.C. mark a on the rotor with
the align mark b on the crankcase cover
when piston is at T.D.C. on compression
stroke.
Measure the valve clearance using a
feeler gauge 1.
Out of specification → Adjust clearance.
5. Adjust:
Valve clearance
Adjustment steps:
Loosen the locknut 1.
Turn the adjuster 3 in or out with the
valve adjusting tool 2 until specified clear-
ance is obtained.
Turning in →
Valve clearance is decreased.
Turning out →
Valve clearance is increased.
Tappet adjusting tool:
YM-8035/90890-01311
Hold the adjuster to prevent it from moving
and tighten the locknut.
T R..
Locknut:
8 Nm (0.8 m • kg, 5.8 ft • lb)

INSP
ADJ
FAHRWERK
HYDRAULISCHE BREMSANLAGE
ENTLÜFTEN (TT-R125LW)
WARNUNG
Die Anlage muß entlüftet werden, wenn:
die Anlage zerlegt wurde,
ein Schlauch gelöst oder erneuert wurde,
der Flüssigkeitsstand sehr niedrig ist,
die Anlage nicht einwandfrei funktioniert.
Eine nicht korrekt durchgeführte Entlüftung
kann zur Verminderung der Bremsleistung
führen.
1. Demontieren:
Hauptbremszylinder-Verschlußdeckel
Membran
2. Entlüften:
Bremsflüssigkeit
Arbeitsschritte
a. Ausgleichsbehälter mit der empfohle-
nen Bremsflüssigkeit befüllen. Darauf
achten, daß keine Flüssigkeit verschüt-
tet wird und der Ausgleichsbehälter nicht
überläuft.
b. Membran einsetzen.
c. Durchsichtigen Kunststoffschlauch 2
fest auf Entlüftungsschraube 1 aufstek-
ken.
d. Freies Schlauchende in Auffangbehälter
führen.
e. Den Bremshebel mehrmals langsam
betätigen.
f. Den Bremshebel ziehen und in dieser
Stellung halten.
g. Die Entlüftungsschraube lockern und
den Bremshebel bis zum Anschlag
bewegen.
h. Die Entlüftungsschraube festziehen,
danach den Handbremshebel loslassen.
T R..
Entlüftungsschraube
6 Nm (0,6 m • kg)
i. Schritte (e) bis (h) solange wiederholen,
bis sich keine Luftblasen mehr im Kunst-
stoffschlauch befinden.
PARTIE CYCLE/PURGE DE L’AIR DU SYSTÈME DE FREINAGE (TT-R125LW)
FAHRWERK/HYDRAULISCHE BREMSANLAGE ENTLÜFTEN (TT-R125LW)
PARTIE CYCLE
PURGE DE L’AIR DU SYSTÈME DE
FREINAGE (TT-R125LW)
AVERTISSEMENT
Purger le système de freinage si:
Le système a été démonté.
Un tuyan de frein a été desserré ou deposé.
Le liquide de frein est très bas.
Le frein fonctionne mal.
Si le système de freinage n’est pas correctement
purgé, cela peut se traduire par une dangereuse
perte d’efficacité de freinage.
1. Déposer:
Couvercle du maître cylindre de frein
Diaphragme
2. Purger:
Liquide de frein
Etapes de purge de l’air:
a. Ajouter du liquide de frein correct dans le
réservoir.
b. Mettre en place le diaphragme. Prendre
garde à ne pas renverser ou faire déborder le
réservoir.
c. Connecter hermétiquement le tuyau transpa-
rent en matière plastique 2, à la vis de purge
1 de l’étrier.
d. Mettre l’autre extrémité du tuyau dans un
récipient.
e. Actionner lentement le levier de frein à plu-
sieurs reprises.
f. Serrer le levier et le maintenir à cette posi-
tion.
g. Desserrer la vis de purge d’air et laisser aller
le levier jusqu’à sa limite.
h. Resserrer la vis de purge d’air quand le
levier a atteint la limite de sa course, puis
relâcher le levier.
T R..
Vis de purge:
6 Nm (0,6 m • kg, 4,3 ft • lb)
i. Refaire le opérations (e) à (h) jusqu’à l’éli-
mination totale des bulles d’air du système.
3 - 15

3 - 16
INSP
ADJ
3. Install:
Diaphragm
Brake master cylinder cap
NOTE:
If bleeding is difficult, it may be necessary to
let the brake fluid system stabilize for a few
hours. Repeat the bleeding procedure when
the tiny bubbles in the system have disap-
peared.
j. Add brake fluid to the level line on the
reservoir.
WARNING
Check the operation of the brake after
bleeding the brake system.
FRONT BRAKE ADJUSTMENT
TT-R125
1. Check:
Brake lever free play a
Out of specification → Adjust.
2. Adjust:
Brake 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:
Loosen the locknuts 1.
Turn the locknuts until free play a is
within the specified limits by changing their
tightening position.
Tighten the locknuts.
FRONT BRAKE ADJUSTMENT

3 - 17
INSP
ADJ
TT-R125LW
1. Check:
Brake lever free play a
Out of specification → Adjust.
2. Adjust:
Brake lever free play
CAUTION:
Make sure that there is no brake drag after
adjusting the brake lever free play.
Brake lever free play a:
2 ~ 5 mm (0.08 ~ 0.20 in)
Brake lever free play adjustment steps:
Loosen the locknut 1.
Turn the adjuster 2 until the free play a
is within the specified limits.
Tighten the locknut.
REAR BRAKE ADJUSTMENT
1. Check:
Brake pedal free play a
Out of specification → Adjust.
2. Adjust:
Brake 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:
Turn the adjuster 1 until the free play a is
within the specified limits.
REAR BRAKE ADJUSTMENT