Yamaha 440 Service Manual download pdf (Page 87)

F. Tightening torque

Part to be tightened

[Engine]

Spark plug

Cylinder head

Cylinder head

Flywheel

magneto

Crankcase

upper

and

lower

Tightening sequence

8 5

11

Threadsize

M14P1.25

M8 P1.25

M10P1.25

M16P1.0

M8

Pl.25

© ©

3 2

I 4

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Tightening torque

28 Nm (2.8 m-kg)

25 Nm (2.5 m-kg)

30 Nm 13.0 rn-kql

73 Nm 17.3 rn-kq)

First:

10 Nm 11.0 m-kg)

final:

22 Nm (2.2 m-kg)

o

10

9

c

Remarks

1980 SRX440

Starter pulley

M8

Pl.25

15 Nm (1.5 m-kg)

Crankcase and engine bracket

M10Pl.25

40

Nm (4.0 m-kg)

rive

an rae

suspension

Primary sliding sheave and-cap

M6

Pl.0

11 Nm (1.1 m-kg)

Installation of primary sheave

UNF

1/2"

Initial:

Use

motor

oil

::-:=.

120

Nm (12 rn-kq)

Loosen -once and retighten:

65 Nm (6.5 m-kg)

Installation of secondary sheave

M10P1.25

50 Nm (5.0 m-kg)

Bearing housing

M10P1.25

65 Nm (6.5 m-kg)

Secondary shaft and

Socket

bearing collar -

screw

6 Nm (0.6 m-kg)

Brake caliper and housing chain

Ml0P1.25

50 Nm (5.0 m-kg)

Installation of drive chain sprocket.

Ml0P1.25

50 Nm (5.0 m-kg)

Nut

Installation of driven chain sprocket

Ml0

Pl.25

50 Nm 15.0 m-kq]

Bolt

Chain housing and

frame

M8

Pl.25

23 Nm (2.3 m-kg)

Installation

offront

axle L.H.

M22

Pl.0

85 Nm (8.5 m-kg)

Front axle housing and

frame

M8

Pl.25

23 Nm 12.3 m-kg)

Wheel

sprocket and front axle

5.5 Nm (0.55 m-kg)

Front

pivot

shaft.

Ml0Pl.25

65 Nm (6.5 m-kg)

Rear

pivot

shaft

Ml0P1.25

65 Nm (6.5 m-kg)

Guide

wheel

shaft

M12

P1.25

80

Nm (8.0 m-kg)

Sliding runner M8

P1.25 4.5

Nm (0.45 m-kg)

[Chassis]

Engine

mounting

nut

Ml0P1.25

52 Nm (5.2 m-kq]

Ski runner

M8 P1.25 14 Nm 11.4 m-kg) Use self-locking

nut and

LOCK-TITE

Steering column and

gate

M6

Pl.0

7.3 Nm (0.73 m-kg)

Use lock

washer

Steering relay rod adjusting nut

Ml0P1.25

25 Nm (2.5 m-kg)

Outside arm and ski

column

Ml0P1.25

40 Nm (4.0 rn-kq)

Use lock

washer

Steering

lower

bracket

M8

Pl.25

13.7 Nm (1.37 m-kg)

Use lock

washer

Installation of steering

column

1,2

M6 P1.0

9

Nm (0.9 m-kg)

Use lock

washer

Steering relay ass'v

M10P1.25

30 Nm (3.0 m-kg

Use

cotter

pin

8·7

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