Yamaha 440 Service Manual download pdf (Page 55)

Many

rough surfaces or unfavorable

snow

conditions; the driven/drive

sprocket ratio should be made larger.

Few rough surfaces or better

snow

con-

ditions; the ratio should be made smal-

ler.

1980 SRX440

a. Std. reduction ratios

Drive chain sprocket

18 (P!N

878-17682-80)

Driven chain sprocket 29 (P!N

878-47648-90)

Chain (Links) 70 (P!N

94860-36070)

b. A guide to reduction ratios

Trail riding

Lake

course

Hiqh altitude

(Up to

1500

m or more)

.

Snow

condition ICY Packed

Wet

ICY

Packed

Wet

ICY

Packed Wet

Drive chain sprocket

Std. Std.

17

Std. Std.

17 or

16 16

16

Std.

Driven chain sprocket

Std.

Std.

Std. Std. Std. Std. 33 33

33

Chain (links)

Std. Std.

Std. Std. Std. Std.

Std.

Std.

Std.

c. Sprocket ratio and chain link chart

The

following

sprockets, drive and

driven, and chains are available as op-

tions. The figures in upper lines repre-

sent the driven/drive sprocket ratios,

while those in

lower

lines represent the

number

of

chain links.

•••••

.

"-.......

Teeth of drive

......

~

15 16 17 18

19 20 21

22

P/N878.

P/N878-,

piN

878.

(SRX440

PIN

878-

P/N878.

P/NoBl8"_

P!N,878~

Teeth of

17682-50

17682~60

17682-70

Std.)

17682-90

17693"00

17693-10

17693-20

driven sprocket

29

'.933

1.813

1.706

1.611

1.526

1.450 1.381

1.318

(SRX440 Std.) 68 68

68

or

70

70

70

70

_

70

or 72

72

31

2,067

1.938

1.824

1.722 1.632

1.550

1.476

1,409

PIN

878-47587-00

68

70

70 70 70 or 72

72

72 72

33

2.200

2.063

1.941

1.833

1.737

1.650

1.571

1.500

PIN

888-47587-00

70 70

70

or 72

72

72

72

72 or 74

74

35

2.333

2.188

2.059

1.944

1.842

1.750

1.667

1.591

.

PIN

878-47587-20

72

72 72 72 or 74

72

or

74

74

74

or 76

74

or

76

.

.

Chain links Parts No.

68

94850-36068

72

94850-35072

74

94850-35074

-:

4. Reassembly

a.

Apply

a

low

temperature grease to the

chain housing oil seal lip. Install the se-

condary shaft complete

with

brake disc.

NOTE:------------

Make sure

woodruff

key is properly seated in

key

way

of secondary shaft. Install brake disc

so

that

it is aligned

with

the

woodruff

key.

b. Use the four bolts to

mount

the chain

housing to frame.

5-11

Tightening torque:

23

Nm (2.3 m-kg)

c. Install the brake caliper assembly.

Brake caliper

mounting

bolt

tightening torque:

50

Nm (5.0 m-kg)

.

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 91 92

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