2004 YAMAHA WR 250F water pump

4 - 147
ENGOIL FILTER ELEMENT, WATER PUMP AND RIGHT CRANKCASE COVER
Impeller shaft
1. Install:
Impeller shaft
1
Washer
2
Impeller
3
NOTE:Take care so that the oil seal lip is
not damaged or the spring does
not slip off its position.
When installing the impeller shaft,
apply the lithium soap base grease
on the oil seal lip and impeller
shaft. And install the shaft while
turning it.
Hold the impeller shaft on its width
across the flats
a with spanners,
etc. and install the impeller.
T R..14 Nm (1.4 m · kg, 10 ft · lb)
Right crankcase cover
1. Install:
Dowel pin
1
O-ring
2
Collar
3
Gasket
4
NOTE:Apply the lithium soap base grease
on the O-ring.
New
New
2. Install:
Right crankcase cover
1
Bolt (right crankcase cover)
2
NOTE:Apply the engine oil on the impeller
shaft end.
Mesh the impeller shaft gear
3
with primary drive gear
4.
Tighten the bolts in stage, using a
crisscross pattern.
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
Arbre de rotor
1. Monter:
Arbre de rotor 1
Rondelle 2
Rotor 3
N.B.:
Prendre garde à ne pas endommager la
lèvre de bague d’étanchéité et à ne pas
déplacer le ressort.
Lors du montage de l’arbre de rotor,
enduire la lèvre de bague d’étanchéité
ainsi que l’arbre de rotor d’huile de
moteur. Monter l’arbre de rotor tout en
le tournant.
Maintenir l’arbre de rotor par les
zones latérales aplaties a au moyen
d’une clé, etc., et monter la turbine de
pompe.
T R..14 Nm (1,4 m · kg, 10 ft · lb)
Demi-carter droit
1. Monter:
Goupille 1
Joint torique 2
Collerette 3
Joint 4
N.B.:
Enduire le joint torique de graisse à base
de savon au lithium.
New
New
2. Monter:
Demi-carter droit 1
Boulon (demi-carter droit) 2
N.B.:
Enduire l’extrémité d’arbre de rotor
d’huile moteur.
Engrener le pignon d’arbre de rotor 3
et le pignon menant primaire 4.
Serrer les boulons par étapes en sui-
vant un ordre entrecroisé.
T R..10 Nm (1,0 m · kg, 7,2 ft · lb)
ELEMENT DE FILTRE A HUILE, POMPE A EAU ET DEMI-CARTER DROIT

4 - 149
ENGOIL FILTER ELEMENT, WATER PUMP AND RIGHT CRANKCASE COVER
Kickstarter crank
1. Install:
Kickstarter crank
1
Washer
2
Bolt (kickstarter crank)
3
NOTE:Install the kickstarter crank so that
the kickstarter crank is as vertical as
possible with the distance
a
between the kickstarter crank and
the frame being 8 mm (0.31 in) or
more.
T R..33 Nm (3.3 m · kg, 24 ft · lb)
2. Install:
Oil hose
1
Bolt (oil hose)
2
T R..8 Nm (0.8 m · kg, 5.8 ft · lb)
3. Install:
Copper washer
1
Oil delivery pipe
2
Union bolt (M8)
3
Union bolt (M10)
4
T R..18 Nm (1.8 m · kg, 13 ft · lb)
T R..20 Nm (2.0 m · kg, 14 ft · lb)
New
Water pump housing
1. Install:
Dowel pin
1
O-ring
2
NOTE:Apply the lithium soap base grease
on the O-ring.
New
2. Install:
Water pump housing
1
Bolt (water pump housing)
2
Oil filter element
1. Install:
Oil filter element
1
O-ring
2
Oil filter element cover
3
Bolt (oil filter element cover)
NOTE:Apply the lithium soap base grease
on the O-ring.
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
New
Pédale de kick
1. Monter:
Pédale de kick 1
Rondelle 2
Boulon (pédale de kick) 3
N.B.:
Monter la pédale de kick en veillant à
essayer qu il soit le plus à la verticale
que possible et à ce que la distance a
entre la pédale et le cadre soit de 8 mm
(0,31 in) minimum.
T R..33 Nm (3,3 m · kg, 24 ft · lb)
2. Monter:
Durit d’huile 1
Boulon (durit d’huile) 2
T R..8 Nm (0,8 m · kg, 5,8 ft · lb)
3. Monter:
Rondelle de cuivre 1
Tuyau d’arrivée d’huile 2
Boulon-raccord (M8) 3
Boulon-raccord (M10) 4
T R..18 Nm (1,8 m · kg, 13 ft · lb)
T R..20 Nm (2,0 m · kg, 14 ft · lb)
New
Logement de la pompe à eau
1. Monter:
Goupille 1
Joint torique 2
N.B.:
Enduire le joint torique de graisse à base
de savon au lithium.
New
2. Monter:
Logement de la pompe à eau 1
Boulon
(logement de la pompe à eau) 2
Elément du filtre à huile
1. Monter:
Elément de filtre à huile 1
Joint torique 2
Couvercle d’élément de filtre à
huile 3
Boulon (couvercle d’élément de
filtre à huile)
N.B.:
Enduire le joint torique de graisse à base
de savon au lithium.
T R..10 Nm (1,0 m · kg, 7,2 ft · lb)
T R..10 Nm (1,0 m · kg, 7,2 ft · lb)
New
ELEMENT DE FILTRE A HUILE, POMPE A EAU ET DEMI-CARTER DROIT

4 - 151
ENGBALANCER
BALANCER
Extent of removal:
1 Balancer shaft drive gear
2 Balancer shaft
Extent of removal Order Part name Q’ty Remarks
BALANCER REMOVAL
Preparation for removal Primary driven gear Refer to “CLUTCH” section.
Right crankcase cover Refer to “OIL FILTER ELEMENT, WATER PUMP
AND RIGHT CRANKCASE COVER” section.
Stator Refer to “AC MAGNETO AND STARTER CLUTCH”
section.
1 Nut (primary drive gear) 1
Refer to “REMOVAL POINTS”.
2 Nut (balancer shaft driven gear) 1
3 Lock washer 1
4 Primary drive gear 1
5 Balancer shaft drive gear 1
6 Lock washer 1
7 Balancer shaft driven gear 1
8 Balancer shaft 1 Refer to “REMOVAL POINTS”.
1
2
2

4 - 159
ENGOIL PUMP
OIL PUMP
Extent of removal:
1 Oil pump removal
2 Oil pump disassembly
Extent of removal Order Part name Q’ty Remarks
OIL PUMP REMOVAL AND
DISASSEMBLY
Preparation for removal Primary driven gear Refer to “CLUTCH” section.
Right crankcase cover Refer to “OIL FILTER ELEMENT, WATER PUMP
AND RIGHT CRANKCASE COVER” section.
1 Circlip 1
2 Washer 1
3 Oil pump drive gear 1
4 Oil pump assembly 1
5 Outer rotor 2 1
6 Circlip 1
7 Inner rotor 2 1
8 Dowel pin 1
9 Oil pump cover 1
10 Outer rotor 1 1
11 Inner rotor 1 1
12 Dowel pin 1
13 Washer 1
14 Oil pump drive shaft 1
15 Rotor housing 1
2
1