2002 YAMAHA YZ125LC radiator cap

3-5
INSP
ADJENGINE/COOLANT LEVEL INSPECTION/
COOLANT REPLACEMENT
EC350000
ENGINE
EC351011
COOLANT LEVEL INSPECTION
w
Do not remove the radiator cap 1 1
, drain
bolt and hoses when the engine and radia-
tor are hot. Scalding hot fluid and steam
may be blown out under pressure, which
could cause serious injury.
When the engine has cooled, place a thick
towel over the radiator cap, slowly rotate
the cap counterclockwise to the detent.
This procedure allows any residual pres-
sure to escape. When the hissing sound
has stopped, press down on the cap while
turning counterclockwise and remove it.
cC
Hard water or salt water is harmful to the
engine parts. You may use distilled water,
if you can’t get soft water.
1. Place the machine on a level place, and
hold it in an upright position.
2. Remove:
9Radiator cap
3. Check:
9Coolant level a
Coolant level low Add coolant.
1Radiator
EC353011
COOLANT REPLACEMENT
w
Do not remove the radiator cap when the
engine is hot.
5NY-9-30-3A 5/23/01 8:24 PM Page 18

3-6
INSP
ADJ
COOLANT REPLACEMENT
cC
Take care so that coolant does not splash
on painted surfaces. If it splashes, wash it
away with water.
1. Place a container under the engine.
2. Remove:
9Coolant drain bolt 1
3. Remove:
9Radiator cap
Drain the coolant completely.
4. Clean:
9Cooling system
Thoroughly flush the cooling system with
clean tap water.
5. Install:
9Copper washer
9Coolant drain bolt
6. Fill:
9Radiator
9Engine
To specified level.
Recommended coolant:
High quality ethylene glycol
anti-freeze containing
anti-corrosion for
aluminum engine
Coolant 1 1
and water
(soft water) 2 2
mixing ratio:
50%/50%
Coolant capacity:
0.95 L (0.84 Imp qt, 1.00 US qt)
10 Nm (1.0 m•kg, 7.2 ft•lb)
5NY-9-30-3A 5/23/01 8:24 PM Page 20

3-6
CHANGEMENT DU LIQUIDE DE REFROIDISSEMENT
ERNEUERUNG DES KÜHLMITTELS
SOSTITUZIONE DEL LIQUIDO REFRIGERANTE
INSP
ADJ
dD
Darauf achten, daß kein Kühlmittel
auf lackierte Flächen verspritzt
wird. Wird Kühlmittel verspritzt,
dieses sofort mit Wasser abwa-
schen.
1. Ein Auffanggefäß unter dem
Motor anordnen.
2. Ausbauen:
9Kühlmittelablaßschraube 1
3. Ausbauen:
9Kühlerdeckel
Das Kühlmittel vollständig
ablaufen lassen.
4. Reinigen:
9Kühlsystem
Das Kühlsystem gründlich mit
Leitungswasser spülen.
5. Einbauen:
9Kupferscheibe
9Kühlmittelablaßschraube
6. Füllen:
9Kühler
9Motor
Zum vorgeschriebenen Stand.
fF
Prendre garde à ne pas verser de
liquide de refroidissement sur les
surfaces peintes. Si cela était, l’élimi-
ner avec de l’eau.
1. Mettre un récipient sons le moteur.
2. Déposer:
9Boulon de vidange de refroidis-
sement 1
3. Déposer:
9Bouchon du radiateur
Vidanger le liquide de refroidis-
sement en totalité.
4. Nettoyer:
9Circuit de refroidissement
Bien rincer le circuit de refroi-
dissement avec de l’eau du robi-
net.
5. Monter:
9Rondelle en cuivre
9Boulon de vidange de refroidis-
sement
6. Remplir:
9Radiateur
9Moteur
Au niveau specifié.
iI
Fare attenzione che il liquido refrige-
rante non schizzi sulle superfici ver-
niciate. Se schizza, toglierlo con
acqua.
1. Collocare un contenitore sotto il
motore.
2. Togliere:
9Bullone di scarico del liquido
refrigerante 1
3. Togliere:
9Tappo del radiatore
Scaricare completamente il
liquido refrigerante.
4. Pulire:
9Impianto di raffreddamento
Lavare accuratamente l’impian-
to di raffreddamento con acqua
del rubinetto pulita.
5. Installare:
9Rondella di rame
9Bullone di scarico del liquido
refrigerante
6. Riempire:
9Radiatore
9Motore
Al livello specificato.
Empfohlenes Kühlmittel:
Hochqualitatives
Äthylenglykol-
Frostschutsmittel mit
Korrosionsschutzmittel
für Aluminium-Motoren
Mischungsverhältnis von
Kühlmittel 1 1
und Wasser
(Weiches Wasser) 2 2
:
50%/50%
Kühlerinhalt:
0,95 L (0,84 Imp qt,
1,00 US qt)Liquide de refroidissement
recommandé:
Antigel à l’ethyléne
glycol de haute qualité
contenant un agent
anticorrosion pour
moteurs en aluminium.
Taux du mélange liquide
de refroidissement 1 1
/eau
(eau douce) 2 2
:
50 %/50 %
Capacité de refroidisse-
ment:
0,95 L (0,84 Imp qt,
1,00 US qt)Liquido refrigerante
raccomandato:
Antigelo a base di
glicole etilenico di alta
qualità contenente
anticorrosivo per
motore in alluminio
Rapporto di miscelazione
di liquido refrigerante 1 1
e acqua (acqua dolce) 2 2
:
50%/50%
Capacità di liquido
refrigerante:
0,95 L (0,84 Imp qt,
1,00 US qt)
10 Nm (1,0 m•kg, 7,2 ft•lb)
10 Nm (1,0 m•kg, 7,2 ft•lb)
10 Nm (1,0 m•kg, 7,2 ft•lb)
5NY-9-30-3A 5/23/01 8:24 PM Page 21

3-7
INSP
ADJ
RADIATOR CAP INSPECTION
cC
9
Do not mix more than one type of ethyl-
ene glycol antifreeze containing corro-
sion inhibitors for aluminum engine.
9Do not use water containing impurities
or oil.
7. Install:
9Radiator cap
Start the engine and warm it up for a sev-
eral minutes.
8. Check:
9Coolant level
Coolant level low Add coolant.
EC355000
RADIATOR CAP INSPECTION
1. Inspect:
9Seal (radiator cap) 1
9Valve and valve seat 2
Crack/Damage Replace.
Exist fur deposits 3Clean or replace.
Handling notes of coolant:
The coolant is harmful so it should be handled
with special care.
w
9
When coolant splashes to your eye.
Thoroughly wash your eye with water
and see your doctor.
9When coolant splashes to your clothes.
Quickly wash it away with water and then
with soap.
9When coolant is swallowed.
Quickly make him vomit and take him to
a doctor.
5NY-9-30-3A 5/23/01 8:24 PM Page 22

3-8
INSP
ADJRADIATOR CAP OPENING PRESSURE INSPECTION/
COOLING SYSTEM INSPECTION
EC356002
RADIATOR CAP OPENING PRESSURE
INSPECTION
1. Attach:
9Radiator cap tester 1and adapter 2
NOTE:
Apply water on the radiator cap seal.
3Radiator cap
2. Apply the specified pressure.
3. Inspect:
9Pressure
Impossible to maintain the specified pres-
sure for 10 seconds Replace.
EC357003
COOLING SYSTEM INSPECTION
1. Inspect:
9Coolant level
2. Attach:
9Radiator cap tester 1and adapter 2
3. Apply the specified pressure.
Radiator cap tester:
YU-24460-01/90890-01325
Adapter:
YU-33984/90890-01352
Radiator cap tester:
YU-24460-01/90890-01325
Adapter:
YU-33984/90890-01352
Radiator cap opening pressure:
95~125 kPa (0.95~1.25 kg/cm
2,
13.5~17.8 psi)
Standard pressure:
180 kPa (1.8 kg/cm
2, 25.6 psi)
5NY-9-30-3A 5/23/01 8:24 PM Page 24

4-4
ENG
RADIATEUR
KÜHLER
RADIATORE
AusbauumfangReihen-
TeilenameStück-
Bemerkungen
folgezahl
AUSBAU DES KÜHLERS
Die Kühflüssigkeit ablassen. Siehe Abschnitt „ERNEUERUNG DES
KÜHLMITTELS“ im KAPITEL 3.
Sitz und Kraftstofftank Siehe Abschnitt „SITZ, KRAFTSTOFFTANK UND
SEITENDECKEL“
1 Tafel 2
2 Klemme (Kühlerschlauch 1, 3) 2 Nur lösen.
3 Kühlerschlauch 2 1
4 Kühler (Links) 1
5 Kühlerschlauch 4 1
6 Kühler (Rechts) 1
7 Kühlerschlauch 1 1
8 Kühlerschlauch 3 1
9 Kühler-Belüftungsschlauch 1
KÜHLER
Ausbauumfang:1Ausbau des Kühlers
IC450001
RADIATORE
Ampiezza della rimozione:1Rimozione del radiatore
Ampiezza della rimozione Ordine Particolare Quantità Osservazioni
RIMOZIONE DEL RADIATORE
Scaricare il liquido refrigerante. Consultare la sezione “SOSTITUZIONE DEL
LIQUIDO REFRIGERANTE” al CAPITOLO 3.
Sella e serbatoio del carburante Consultare la sezione “SELLA, SERBATOIO DEL
CARBURANTE E COPERTURE LATERALI”.
1 Pannello 2
2 Brida (manicotto flessibile del radiatore 1, 3) 2 Soltanto allentamento.
3 Manicotto flessibile del radiatore 2 1
4 Radiatore (sinistro) 1
5 Manicotto flessibile del radiatore 4 1
6 Radiatore (destro) 1
7 Manicotto flessibile del radiatore 1 1
8 Manicotto flessibile del radiatore 3 1
9 Sfiato del radiatore 1
Preparazione per
la rimozione
Vorbereitung für den Ausbau
1
1
1
RADIATEUR
Etendue de dépose:1Dépose du radiateur
Etendue de dépose Ordre Nom de pièce Q’té Remarques
DEPOSE DU RADIATEUR
Vidanger le liquide de refroidissement. Se reporter à la section “CHANGEMENT DU
LIQUIDE DE REFROIDISSEMENT” du
CHAPITRE 3.
Selle et réservoir à essence Se reporter à la section “SELLE, RESERVOIR A
ESSENCE ET COUVERCLES LATERAUX”.
1 Panneau 2
2 Bride (tuyau du radiateur 1, 3) 2 Uniquement desserrage.
3 Tuyau du radiateur 2 1
4 Radiateur (gauche) 1
5 Tuyau du radiateur 4 1
6 Radiateur (droit) 1
7 Tuyau du radiateur 1 1
8 Tuyau du radiateur 3 1
9 Tuyau du reniflard de radiateur 1
Préparation
pour la dépose
5NY-9-30-4A 5/23/01 8:40 PM Page 9

4-5
ENGRADIATOR
EC456000
HANDLING NOTE
w
Do not remove the radiator cap when the
engine and radiator are hot. Scalding hot
fluid and steam may be blown out under
pressure, which could cause serious in-
jury.
When the engine has cooled, open the ra-
diator cap by the following procedure:
Place a thick rag, like a towel, over the
radiator cap, slowly rotate the cap counter-
clockwise to the detent. This procedure al-
lows any residual pressure to escape.
When the hissing sound has stopped,
press down on the cap while turning coun-
terclockwise and remove it.
EC454000
INSPECTION
EC444100
Radiator
1. Inspect:
9Radiator core 1
Obstruction Blow out with compressed air
through rear of the radiator.
Bent fin Repair/replace.
5NY-9-30-4A 5/23/01 8:40 PM Page 10

4-6
ENG
RADIATEUR
KÜHLER
RADIATORE
IC455000
MONTAGGIO E
INSTALLAZIONE
IC455342
Radiatore
1. Installare:
9Sfiato del radiatore 1
9Manicotto flessibile del radiato-
re 3 2
9Manicotto flessibile del radiato-
re 1 3
Sul radiatore (destro) 4.
2. Installare:
9Radiatore (destro) 1
9Bullone [radiatore (destro)] 2
9Manicotto flessibile del radiato-
re 4 3
Consultare la sezione “DIA-
GRAMMA DEL PASSAGGIO
DEI CAVI” al CAPITOLO 2.
3. Installare:
9Radiatore (sinistro) 1
9Bullone [radiatore (sinistro)] 2
9Manicotto flessibile del radiato-
re 2 3
Consultare la sezione “DIA-
GRAMMA DEL PASSAGGIO
DEI CAVI” al CAPITOLO 2.
4. Serrare:
9Brida (manicotto flessibile del
radiatore 1, 3) 4
5. Installare:
9Pannello 1
9Bullone (pannello) 2
NOTA:
Inserire per primo nel radiatore il gan-
cio adel pannello laterale.
MONTAGE UND EINBAU
Kühler
1. Einbauen:
9Kühler-Belüftungsschlauch 1
9Kühlerschlauch 3 2
9Kühlerschlauch 1 3
Zum Kühler (Rechts) 4.
2. Einbauen:
9Kühler (Rechts) 1
9Schraube [Kühler (Rechts)] 2
9Kühlerschlauch 4 3
Siehe Abschnitt „KABEL-
FÜHRUNGS-ÜBERSICHT-
PLAN“ im KAPITEL 2.
3. Einbauen:
9Kühler (Links) 1
9Schraube [Kühler (Links)] 2
9Kühlerschlauch 2 3
Siehe Abschnitt „KABEL-
FÜHRUNGS-ÜBERSICHT-
PLAN“ im KAPITEL 2.
4. Festziehen:
9Klemme (Kühlerschlauch 1, 3)
4
5. Einbauen:
9Tafel 1
9Schraube (Tafel) 2
HINWEIS:
Haken aan der Innenseite zuerst am
Kühlen befestigen.
REMONTAGE ET
MONTAGE
Radiateur
1. Monter:
9Tuyau de renifard de radiateur
1
9Tuyau de radiateur 3 2
9Tuyau de radiateur 1 3
Sur le radiateur (droit) 4.
2. Monter:
9Radiateur (droit) 1
9Boulon [radiateur (droit)] 2
9Tuyau de radiateur 4 3
Se reporter à la section “CHE-
MINEMENT DES CABLES”
du CHAPITRE 2.
3. Monter:
9Radiateur (gauche) 1
9Boulon [radiateur (gauche)] 2
9Tuyau de radiateur 2 3
Se reporter à la section “CHE-
MINEMENT DES CABLES”
du CHAPITRE 2.
4. Serrer:
9Bride (tuyau du radiateur 1, 3)
4
5. Monter:
9Panneau 1
9Boulon (panneau) 2
N.B.:
Ajustez d’abord le crochet asur la
partie intérieure du radiateur.
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
1 Nm (0,1 m•kg, 0,7 ft•lb)
10 Nm (1,0 m•kg, 7,2 ft•lb)
10 Nm (1,0 m•kg, 7,2 ft•lb)
10 Nm (1,0 m•kg, 7,2 ft•lb)
5NY-9-30-4A 5/23/01 8:40 PM Page 13