2003 YAMAHA TTR125 oil change

SPEC

2 - 2
GENERAL SPECIFICATIONS
Oil capacity:
Engine oil
Periodic oil change 1.0 L (0.88 Imp qt, 1.06 US qt)
Total amount 1.2 L (1.06 Imp qt, 1.27 US qt)
Air filter: Wet type element
Fuel:
Type Unleaded gasoline only (USA, AUS, NZ)
Regular unleaded gasoline only
(CDN, EUROPE)
Regular gasoline (ZA)
Tank capacity 6.6 L (1.45 Imp gal, 1.74 US gal)
Reserve amount 1.9 L (0.42 Imp gal, 0.5 US gal)
Carburetor:
Type VM20SS
Manufacturer MIKUNI
Spark plug:
Type CR7HSA/U22FSR-U
Manufacturer NGK/DENSO
Gap 0.6 ~ 0.7 mm (0.02 ~ 0.03 in)
Clutch type: Wet, multiple-disc
Transmission:
Primary reduction system Gear
Primary reduction ratio 68/19 (3.579)
Secondary reduction system Chain drive
Secondary reduction ratio 49/13 (3.769)
Transmission type Constant mesh, 5-speed
Operation Left foot operation
Gear ratio: 1st 37/14 (2.643)
2nd 32/18 (1.778)
3rd 25/19 (1.316)
4th 23/22 (1.045)
5th 21/24 (0.875)
Chassis:
Frame type Diamond
Caster angle 28.7˚
Trail 93 mm (3.66 in)
Tire:
Type With tube
Size (front) 70/100-17 40M
Size (rear) 90/100-14 49M
Manufacturer (front and rear) CHENG SHIN
Tire pressure (front and rear) 100 kPa (1.00 kgf/cm
2

, 15 psi)
2

SPEC

2 - 5
GENERAL SPECIFICATIONS
Oil capacity:
Engine oil
Periodic oil change 1.0 L (0.88 Imp qt, 1.06 US qt)
Total amount 1.2 L (1.06 Imp qt, 1.27 US qt)
Air filter: Wet type element
Fuel:
Type Unleaded gasoline only (USA, AUS, NZ)
Regular unleaded gasoline only
(CDN, EUROPE)
Regular gasoline (ZA)
Tank capacity 6.6 L (1.45 Imp gal, 1.74 US gal)
Reserve amount 1.9 L (0.42 Imp gal, 0.5 US gal)
Carburetor:
Type VM20SS
Manufacturer MIKUNI
Spark plug:
Type CR7HSA/U22FSR-U
Manufacturer NGK/DENSO
Gap 0.6 ~ 0.7 mm (0.02 ~ 0.03 in)
Clutch type: Wet, multiple-disc
Transmission:
Primary reduction system Gear
Primary reduction ratio 68/19 (3.579)
Secondary reduction system Chain drive
Secondary reduction ratio 54/13 (4.154)
Transmission type Constant mesh, 5-speed
Operation Left foot operation
Gear ratio: 1st 37/14 (2.643)
2nd 32/18 (1.778)
3rd 25/19 (1.316)
4th 23/22 (1.045)
5th 21/24 (0.875)
Chassis:
Frame type Diamond
Caster angle 28.5˚
Trail 107 mm (4.21 in)
Tire:
Type With tube
Size (front) 70/100-19 42M
Size (rear) 90/100-16 52M
Manufacturer (front and rear) INOUE RUBBER
Tire pressure (front and rear) 100 kPa (1.00 kgf/cm
2

, 15 psi)

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.
Check fluid level and leakage. (TT-R125LWE only)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 molybdenum disulfide 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.

INSP
ADJ

PROGRAMME D’ENTRETIEN
CONTRÔLES ET RÉGLAGES PÉRIODIQUES
PROGRAMME D’ENTRETIEN
Le programme suivant est destiné à servir de guide général pour l’entretien et le graissage. Garder à l’esprit
que les intervalles d’entretien et de graissage varient en fonction des conditions atmosphériques, du terrain, de
l’altitude et de l’utilisation du véhicule. Si une question se pose quant aux fréquences auxquelles un entretien
doit être effectué, demander conseil à son concessionnaire Yamaha.
Conces-
sionnaireÉléments Contrôles et travaux d’entretienInitial Tous les
10 heures
(1 mois)60 heures
(6 mois)120 heures
(12 mois)
*Canalisation de car-
burantContrôler si les flexibles de carburant ne sont ni craque-
lés ni endommagés.
Remplacer si nécessaire.
BougieVérifier l’état.
Nettoyer, régler l’écartement des électrodes ou rempla-
cer si nécessaire.
* SoupapesVérifier le jeu de soupape.
Régler si nécessaire.
Filtre à air Nettoyer ou remplacer l’élément si nécessaire.
* CarburateurContrôler le régime de ralenti et le fonctionnement du
démarreur.
Régler si nécessaire.
Système d’échappe-
mentContrôler l’étanchéité.
Resserrer si nécessaire.
Remplacer le joint si nécessaire.
Huile de moteurContrôler le niveau d’huile et l’étanchéité.
Corriger si nécessaire.
Changer. (Faire chauffer le moteur avant la vidange.)
EmbrayageVérifier le fonctionnement.
Régler ou remplacer le câble.
* Frein avantVérifier le fonctionnement.
Régler la garde du levier de frein.
Contrôler le niveau du liquide et s’assurer qu’il n’y a pas
de fuite. (TT-R125LWE seulement)À chaque utilisation
* Frein arrièreVérifier le fonctionnement.
Régler le jeu de la pédale de frein et remplacer les
mâchoires de frein si nécessaire.À chaque utilisation
* RouesContrôler l’équilibre, le voile, le serrage des rayons et le
bon état général.
Serrer les rayons et rééquilibrer; remplacer si nécessaire.
* PneusContrôler la profondeur de sculpture et l’état des pneus.
Remplacer si nécessaire.
Contrôler la pression de gonflage.
Corriger si nécessaire.
* Roulements de roueContrôler le jeu et l’état.
Remplacer si nécessaire.
* Bras oscillantContrôler le jeu au pivots du bras oscillant.
Corriger si nécessaire.
Lubrifier à la graisse au disulfure de molybdène.
Chaîne de transmis-
sionContrôler la flèche de la chaîne.
Régler si nécessaire. S’assurer que la roue arrière est
parfaitement alignée.
Nettoyer et lubrifier.À chaque utilisation
*Roulements de direc-
tionS’assurer que les roulements n’ont pas de jeu et que la
direction tourne en douceur.
Corriger si nécessaire.
Lubrifier à la graisse à base de savon au lithium toutes
les 120 heures.
3 - 1

3 - 9
INSP
ADJ
ENGINE OIL REPLACEMENT
5. Install:
Dipstick
6. Start the engine and let it warm up for
several minutes.
7. Turn off the engine and inspect the oil
level once again.
NOTE:
Wait a few minutes until the oil settles before
inspecting the oil level.
ENGINE OIL REPLACEMENT
1. Start the engine and warm it up for sev-
eral minutes and wait for five minute.
2. Place the machine on a level place and
hold it on upright position by placing the
suitable stand under the engine.
3. Place a suitable container under the
engine.
4. Remove:
Oil drain bolt 1
Dipstick 2
Drain the engine oil.
5. Install:
Copper washer
Oil drain bolt 1
New
T R..20 Nm (2.0 m · kg, 14 ft · lb)
6. Fill:
Engine oil
7. Check:
Oil leakage
8. Check:
Engine oil level
9. Install:
Dipstick 2
Oil capacity:
Periodic oil change:
1.0 L (0.88 Imp qt, 1.06 US qt)

3 - 24
INSP
ADJ
REAR SHOCK ABSORBER ASSEMBLY
INSPECTION
1. Inspect:
Swingarm 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:
Left side cover
3. Loosen:
Locknut 1
4. Adjust:
Spring preload
By turning the adjuster 2.
NOTE:
Be sure to remove all dirt and mud from
around the locknut and adjuster before
adjustment.
The length of the spring (installed) changes
1.5 mm (0.06 in) per turn of the adjuster.
CAUTION:
Never attempt to turn the adjuster beyond
the maximum or minimum setting.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
TT-R125E:
165 mm
(6.50 in)
TT-R125LWE:
160.5 mm
(6.32 in)TT-R125E:
155 ~ 175 mm
(6.10 ~ 6.89 in)
TT-R125LWE:
147.5 ~ 167.5 mm
(5.81 ~ 6.59 in)
REAR SHOCK ABSORBER ASSEMBLY INSPECTION/
REAR SHOCK ABSORBER SPRING PRELOAD ADJUSTMENT