Yamaha 40V Manuel de service télécharger pdf (Page 107)

5-32

POWR

CRANK SHAFT AND PISTON

REMOVAL AND INSTALLATION CHART

Step Procedure/Part name Q’ty Service points

CRANK SHAFT AND PISTON

REMOVAL

Follow the left “Step” for removal.

Crank case Refer to “CRANK CASE AND CYLINDER

BODY”.

1 Bolt (with washer) 1 6 × 20 mm

2 Oil seal housing 1

3 Plane washer 1

4 Crankshaft ass’y 1

5 Circlip 2

6 Piston pin clip 6

7 Piston pin 3

8 Piston pin washer 6

9 Small end bearing needle 3

10 Piston 3

11 Piston ring 6

12 Bearing 2

13 Oil pump drive gear 1 Oil injection model

14 Spacer 1 Pre-mixed model

OIL SEAL HOUSING DISASSEMBLY

1 O-ring 1

2 Oil seal 1

3 Oil seal 2

Reverse the removal steps for installation.

NOTE:

Remove the crankshaft by lightly tapping

it with a plastic hammer.

CAUTION:

Always use the new clip.

CAUTION:

The washer should be placed with their

convex sides facing the piston.

CAUTION:

Do not a mixture of new and used bear-

ing needles in the same small end.

CAUTION:

When installing the bearing, the seal-cap

side should be installed towards the fly-

wheel side.

CAUTION:

When installing the gear, the chamfered

bore edge side should be installed

towards the flywheel side.

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Yamaha 40V Manuel de service Page 107

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