2003 YAMAHA TTR125 oil

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SPECCABLE ROUTING DIAGRAM
1Air vent hose
2Spark plug lead
3Starter cable
4Throttle cable
5Clutch cable
6Clamp
7Cable guide
8Engine oil breather hose
9Overflow hoseÅAfter clamping the starter cable, push it against the starter plunger.
ıPut the tip of the air vent hose into the main pipe.
ÇInstall the primary coil terminal (orange) to the ignition coil.
ÎFasten the ground lead together with the ignition coil.
‰Pass the clutch cable on the inside of the throttle and starter cable.
ÏClamp the clutch cable with the paint in the cable guide bottom recess.
ÌPass the throttle cable and starter cable into the cable guide.
ÓPass the engine oil breather hose and overflow hose between the right
half of the swingarm and pillar tube.
ÈClamp the engine oil breather hose, overflow hose and air vent hose to
2 clicks.

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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-R125LW 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.

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MAINTENANCE INTERVALS
*: Since these items requires special tools data and technical skills, they should be serviced.*1: For USA
*Spark arrester*1Clean.
*Front forkCheck operation and for oil leakage.
Correct accordingly.
*
Rear shock
absorber assemblyCheck operation and shock absorber for oil
leakage.
Replace shock absorber assembly if necessary.
*Chassis fastenersMake sure that all nuts, bolts and screws are
properly tightened.
Tighten if necessary.
Dealer
NoteItem Checks and maintenance jobsInitial Every
10 hours
(1 month)60 hours
(6 months)120 hours
(12 months)

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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-R125LW 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.
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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.
Check fluid level and leakage. (TT-R125LW only)P.3-15 ~ 20
Drive chainCheck chain slack and alignment. Check that the chain is lubri-
cated properly.P.3-21 ~ 22
WheelsCheck for excessive wear and tire pressure. Check for loose
spokes and have no excessive play.P.3-24 ~ 25
SteeringCheck that the handlebar can be turned smoothly and have no
excessive play.P.3-25 ~ 27
Front forks and rear shock
absorber assemblyCheck that they operate smoothly and there is no oil leakage. P.3-23 ~ 24
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.3-20
Lubrication Check for smooth operation. Lubricate if necessary. P.3-28
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

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ENGINE OIL LEVEL INSPECTION
6. Apply:
Foam-air-filter oil or engine mixing oil
To the element.
NOTE:
Squeeze out the excess oil. Element should
be wet but not dripping.
7. Install:
Air filter element 1
On air filter guide 2.
8. Apply:
Lithium soap base grease
On the matching surface a on air filter
element.
9. Install:
Air filter element 1
Washer 2
Wing nut 3
ENGINE OIL LEVEL INSPECTION
1. Start the engine, warm it up for several
minutes and wait for five minutes.
2. Place the machine on a level place and
hold it up on upright position by placing
the suitable stand under the engine.
3. Remove:
Dipstick 1

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ENGINE OIL LEVEL INSPECTION
4. Check:
Oil level
Oil level should be between maximum
a and minimum b marks.
Oil level is low → Add oil to proper
level.
NOTE:
When inspecting the oil level, do not screw the
dipstick into the oil tank. Insert the gauge
lightly.
(For USA and CDN)
CAUTION:
Do not add any chemical additives.
Engine oil also lubricates the clutch and
additives could cause clutch slippage.
Do not allow foreign material to enter the
crankcase.
Recommended oil:
At –10 ˚C (10 ˚F) or higher Å:
Yamalube 4 (10W-30) or SAE
10W-30 type SE motor oil
At 5 ˚C (40 ˚F) or higher ı:
Yamalube 4 (20W-40) or SAE
20W-40 type SE motor oil
(Except for USA and CDN)
CAUTION:
Do not add any chemical additives or use
oils with a grade of CD a or higher.
Do not use oils labeled “ENERGY CON-
SERVING II” b or higher. Engine oil also
lubricates the clutch and additives could
cause clutch slippage.
Do not allow foreign materials to enter the
crankcase.
Recommended oil:
Refer to the following chart for
selection of oils which are suited
to the atmospheric temperatures.
Recommended engine oil classi-
fication:
API STANDARD:
API “SE” or higher grade
(Designed primarily for motor-
cycles)

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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)