2002 YAMAHA WR 250F oil filter

4 - 62
ENG

OIL FILTER ELEMENT, WATER PUMP AND RIGHT
CRANKCASE COVER
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)

Kickstarter crank
1. Install:

Kickstarter crank
1


Washer
2


Bolt (kickstarter crank)
3

NOTE:

Install the kickstarter crank so that the kick-
starter 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.
2. Install:

Oil hose
1


Bolt (oil hose)
2

T R..33 Nm (3.3 m · kg, 24 ft · lb)
T R..10 Nm (1.0 m · kg, 7.2 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)

4 - 63
ENG

OIL FILTER ELEMENT, WATER PUMP AND RIGHT
CRANKCASE COVER
Water pump housing
1. Install:

Dowel pin
1


O-ring
2
NOTE:
Apply the lithium soap base grease on the O-
ring.
2. Install:
Water pump housing 1
Bolt (water pump housing) 2
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
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)

4 - 64
ENGBALANCER
BALANCER
Extent of removal:1 Balancer shaft drive gear2 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 CRANK-
CASE COVER” section.
Stator Refer to “CDI MAGNETO” 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”.
2
1
2

4 - 67
ENGOIL PUMP
OIL PUMP
Extent of removal:1 Oil pump removal2 Oil pump disassembly
Extent of removal Order Part name Q’ty Remarks
OIL PUMP REMOVAL AND DIS-
ASSEMBLY
Preparation for removal Primary driven gear Refer to “CLUTCH” section.
Right crankcase cover Refer to “OIL FILTER ELEMENT,
WATER PUMP AND RIGHT CRANK-
CASE 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
11Inner rotor 1
1
2
1