2001 YAMAHA WR 400F oil

ENG
4 - 55
CLUTCH (WR400F)
CLUTCH (WR400F)
CLUTCH
Extent of removal:1 Push rod and push lever removal2 Push rod 1 disassembly
3 Friction plate and clutch plate removal4 Clutch housing removal
Extent of removal Order Part name Q’ty Remarks
CLUTCH REMOVAL
Preparation for removal Drain the engine oil. Refer to “ENGINE OIL REPLACEMENT”
section in the CHAPTER 3.
Brake pedal Refer to “ENGINE REMOVAL” section.
Clutch cable Disconnect at engine side.
1 Clutch cover 1
2 Gasket 1
3 Dowel pin 2
4 Clutch spring 5
5 Pressure plate 1
6 Push rod 1 1
7 Circlip 1
8 Plain washer 1
9 Bearing 1
10Push rod 2
1
4
1
1
2
3

ENG
4 - 58
Reibscheiben
1. Messen:
lReibscheibenstärke
Unvorschriftsmäßig ® Die
Reibscheiben im Satz
erneuern.
Die Reibscheiben an vier
Stellen messen.
Reibscheibenstärke
Reibscheibe 1
[ø112 mm]
2,72–2,88 mm
2,52 mm
Reibscheibe 2
[ø116 mm]
2,92–3,08 mm

2,72 mm
Kupplungsscheiben
1. Messen:
lVerzug der Kupplungsschei-
ben
Unvorschriftsmäßig ®
Kupplungsscheiben im Satz
erneuern.
Eine Richtplatte 1 und eine
Fühlerlehre 2 verwenden.
Verzugsgrenze
0,1 mm
Druckhebel
1. Kontrollieren:
lDruckhebel 1
Verschleiß/Beschädigung ®
Erneuern.
Druckstangen
1. Kontrollieren:
lDruckstange 1 1
lLager 2
lBeilagscheibe 3
lDruckstange 2 4
Verschleiß/Beschädigung/
Verbiegung ® Erneuern. Disque de friction
1. Mesurer:
lEpaisseur de disque de friction
Hors-spécification ® Changer
tous les disques de friction.
Mesurer chaque disque en qua-
tre endroits.
Epaisseur de disque de
friction:
Disque de friction 1
[ø112 mm (4,41 in)]:
2,72 à 2,88 mm
(0,107 à 0,113 in)
:
2,52 mm (0,099 in)
Disque de friction 2
[ø116 mm (4,57 in)]:
2,92 à 3,08 mm
(0,115 à 0,121 in)
:
2,72 mm (0,107 in)
Disque d’embrayage
1. Mesurer:
lVoile de disque d’embrayage
Hors-spécification ® Changer
tous les disques d’embrayage.
Utiliser une plaque à surfacer
1 et une jauge d’épaisseur 2.
Limite de déformation:
0,1 mm (0,004 in)
Levier de poussée
1. Contrôler:
lLevier de poussée 1
Usure/endommagement ®
Changer.
Tige de poussée
1. Contrôler:
lTige de poussée 1 1
lRoulement 2
lRondelle ordinaire 3
lTige de poussée 2 4
Usure/endommagement/défor-
mation ® Changer.Disco de fricción
1. Medir:
lEspesor del disco de fricción
Fuera de especificaciones ®
Reemplazar el disco de fricción
como un juego.
Medir en los cuatro puntos.
Espesor del disco de fric-
ción:
Disco de fricción 1
[ø112 mm (4,41 in)]:
2,72 ~ 2,88 mm
(0,107 ~ 0,113 in)
:
2,52 mm (0,099 in)
Disco de fricción 2
[ø116 mm (4,57 in)]:
2,92 ~ 3,08 mm
(0,115 ~ 0,121 in)
:
2,72 mm (0,107 in)
Discos de embrague
1. Medir:
lAlabeo de los discos de embra-
gue
Fuera de especificaciones ®
Reemplazar los discos de
embrague como un juego.
Utilice un mármol de ajustador
1 y un juego de galgas 2.
Límite de alabeo:
0,1 mm (0,004 in)
Palanca de empuje
1. Inspeccionar:
lPalanca de empuje 1
Desgaste/daños ® Reempla-
zar.
Varilla de empuje
1. Inspeccionar:
lVarilla de empuje 1 1
lCojinete 2
lArandela plana 3
lVarilla de empuje 2 4
Desgaste/daños/deformaciones
® Reemplazar.
EMBRAYAGE (WR400F)
KUPPLUNG (WR400F)
EMBRAGUE (WR400F)

4 - 59
ENGCLUTCH (WR400F)
EC4A5000
ASSEMBLY AND INSTALLATION
Push lever
1. Install:
lPush lever 1
lBolt (push lever)
NOTE:
lApply the lithium soap base grease on the oil
seal lip.
lApply the engine oil on the push lever.
lFit the seat plate 2 in the groove a of the
push lever 1 and tighten the bolt (seat
plate).
2
1
a
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
Clutch
1. Install:
lPrimary driven gear 1
lThrust washer 2
lClutch boss 3
NOTE:
Apply the engine oil on the primary driven gear
inner circumference.
2. Install:
lLock washer 1
lNut (clutch boss) 2
NOTE:
Use the clutch holding tool 3 to hold the clutch
boss.
For USA and CDN
õExcept for USA and CDN
Clutch holding tool:
YM-91042/90890-04086
New
T R..75 Nm (7.5 m · kg, 54 ft · lb)

õ

4 - 60
ENGCLUTCH (WR400F)
3. Bend the lock washer 1 tab.
4. Install:
lFriction plate 1 [d = ø112 mm (4.41 in)]
1
lClutch plate 2
lFriction plate 2 [d = ø116 mm (4.57 in)]
3
NOTE:
lInstall the clutch plates and friction plates
alternately on the clutch boss, starting with a
friction plate 1 and ending with a friction plate
2.
lApply the engine oil on the friction plates and
clutch plates.
5. Install:
lBearing 1
lPlain washer 2
lCirclip 3
To push rod 1 4.
NOTE:
Apply the engine oil on the bearing and plain
washer.
6. Install:
lPush rod 2 1
lPush rod 1 2
NOTE:
Apply the engine oil on the push rod 1, 2.
New
7. Install:
lPressure plate 1
NOTE:
Align the much mark a on the pressure plate
with the punched mark b on the clutch boss.

ENG
4 - 62
OIL FILTER, WATER PUMP AND CRANKCASE COVER
(RIGHT)
OIL FILTER, WATER PUMP AND CRANKCASE COVER (RIGHT)
OIL FILTER, WATER PUMP AND CRANKCASE COVER (RIGHT)
Extent of removal:1 Oil filter removal2 Water pump removal
3 Crankcase cover (right) removal
Extent of removal Order Part name Q’ty Remarks
OIL FILTER, WATER PUMP
AND CRANKCASE COVER
(RIGHT) REMOVAL
Preparation for removal Drain the engine oil. Refer to “ENGINE OIL REPLACEMENT”
section in the CHAPTER 3.
Drain the coolant. Refer to “COOLANT REPLACEMENT”
section in the CHAPTER 3.
Exhaust pipe Refer to “EXHAUST PIPE AND
SILENCER” section.
Brake pedal Refer to “ENGINE REMOVAL” section.
Clutch cover Refer to “CLUTCH” section.
1 Oil filter cover 1
2 Oil filter 1
3 Coolant pipe 2 1
4 Water pump housing 1
5 Pin 2
6 Oil delivery pipe 1
1
2
3

ENG
4 - 63
OIL FILTER, WATER PUMP AND CRANKCASE COVER
(RIGHT)
Extent of removal Order Part name Q’ty Remarks
7 Oil hose 1
8 Kick crank 1
9 Crankcase cover (right) 1
10 Gasket 1
11 Dowel pin/O-ring 4/2
12 Impeller 1
Refer to “REMOVAL POINTS”. 13 Plain washer 1
14 Impeller shaft 1
15 Oil seal 1 1
16 Oil seal 2 1
17 Bearing 1
2
3
2

4 - 64
ENG
OIL FILTER, WATER PUMP AND CRANKCASE COVER
(RIGHT)
REMOVAL POINTS
EC4G3110
Impeller shaft
1. Remove:
lImpeller 1
lPlain washer 2
lImpeller shaft 3
NOTE:
Hold the impeller shaft on its width across the
flats a with spanners, etc. and remove the
impeller.
EC4G3210
Oil seal
NOTE:
It is not necessary to disassemble the water
pump, unless there is an abnormality such as
excessive change in coolant level, discolora-
tion of coolant, or milky transmission oil.
1. Remove:
lBearing 1
lOil seal 2
INSPECTION
EC444200
Impeller shaft
1. Inspect:
lImpeller shaft 1
Bend/wear/damage ® Replace.
Fur deposits ® Clean.

4 - 65
ENG
EC4H4600
Bearing
1. Inspect:
lBearing
Rotate inner race with a finger.
Rough spot/seizure ® Replace.
EC444400
Oil seal
1. Inspect:
lOil seal
Wear/damage ® Replace.
ASSEMBLY AND INSTALLATION
EC4G5110
Oil seal
1. Install:
lOil seal 1
NOTE:
lApply the lithium soap base grease on the oil
seal lip.
lInstall the oil seal with its manufacture’s
marks or numbers facing inward.
Bearing
1. Install:
lBearing 1
NOTE:
Install the bearing by pressing its outer race
parallel.
New
OIL FILTER, WATER PUMP AND CRANKCASE COVER
(RIGHT)