Simplicity Walk-Behind Mower (1999) Manual

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Simplicity Walk-Behind Mower (1999) Manual | Manualzz

Mfg. No: 20706x50D

Walk-Behind Mower (1999)

Copyright © Briggs & Stratton. All Rights reserved

25-Feb-2022

Handle And Bag Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4

Mower Housing Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

Torque Specification Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 or

Not F

Reproduction

Copyright © Briggs & Stratton. All Rights reserved

3 25-Feb-2022

Note: Unless noted otherwise, use the standard torque specifications Mfg. No: 20706x50D or

Not F

Reproduction

Copyright © Briggs & Stratton. All Rights reserved

4 25-Feb-2022

28

29

30

31

24

25

26

27

20

21

22

23

16

17

18

19

12

13

14

15

7

8

9

11

5

6

3

4

2

--

1

--

672665E701

672665E724

671940E701MA

671940E724

26X286MA

672580MA

15X116MA

672664MA

672144

672570E700MA

025X14MA

071372MA

002X77MA

071294

26X268MA

042294

043956MA

091488

091489MA

03X136MA

671916MA

776011MA

671991MA

250X72MA

776014MA

QTY DESCRIPTION

Handle, Upper (Black)

Handle, Upper (Gray)

Handle, Lower (Black)

Handle, Lower (Gray)

Bolt

Control, Drive

Locknut

Cable, Stop

Throttle Control

Engine Stop Lever

Screw

Fastener, Cable

Bolt

Knob

Screw

Clamp

GUIDE, ROPE

Cap

Nut

Bolt

020729

071592MA

672614

672110MA

43628 BC

Charger, Battery

Harness, Wiring

Battery

Case, Battery

Bracket, Battery

Key, Ignition

Frame, Top

Frame Assembly

Bag, Cloth

Bracket, Stop Lever

Copyright © Briggs & Stratton. All Rights reserved

5 25-Feb-2022

Note: Unless noted otherwise, use the standard torque specifications Mfg. No: 20706x50D or

Not F

Reproduction

Copyright © Briggs & Stratton. All Rights reserved

6 25-Feb-2022

28

29

30

31

24

25

26

27

20

21

22

23

16

17

18

19

12

13

14

15

8

9

10

11

--

7

5

6

3

4

1

2

43

44

45

46

39

40

41

42

47

48

49

35

36

37

38

32

33

34

--

672603MA

037X99

071791MA

26X263MA

0031X9MA

043629MA

671931MA

671948

672108

015X68MA

15X102MA

017X38MA

004X21MA

043615MA

17X169MA

015X84MA

043617

17X120MA

071780MA

17X137MA

17X124MA

01X153MA

672763E701MA

672503MA

-----

-----

071434MA

032X64MA

-----

671928

672109

26X279MA

672605MA

009X50MA

071779MA

071788MA

672772 Z

071778MA

071793MA

028X49MA

672591E700

671934

015X43MA

071789MA

671936

002X53MA

001X81MA

011X16MA

071792MA

QTY DESCRIPTION

Housing

Engine

Pulley, Engine

Pin, Spring

UNKNOWN

Cover, Belt (Black)

Cover, Belt (Gray)

Screw

Adjuster, Left Height

Bolt, Shoulder

Pulley

Spacer

Bracket, Idler Support

Pulley, Idler

Bearing

Nut, Push

Bracket, Left Handle

Bracket, Cable

Nut, Hex

Spacer

Bolt, Shoulder

E-Ring

Gear, Pinion

Bolt

Washer

Adjuster, Left Frt. Height

Belt

Pulley, Axle

Screw

Pin, Hair

Pin, Spring

Axle

Cover, Axle (Black)

Cover, Axle (Gray)

Nut, Flange

Nut, Hex

Washer

Screw

Cap, Hub

Washer

Nut, Flange

Wheel, Drive

Washer

Cover, Dust

Washer, Belleville

Washer

Bolt

Blade

Adapter, Blade

Copyright © Briggs & Stratton. All Rights reserved

7 25-Feb-2022

Note: Unless noted otherwise, use the standard torque specifications Mfg. No: 20706x50D or

Not F

Reproduction

Copyright © Briggs & Stratton. All Rights reserved

8 25-Feb-2022

65

72

--

60

61

63

64

57

58

--

59

50

53

55

56

672602MA

0025X6MA

17X146MA

015X88MA

215X17 Z

672611

672613

166X44MA

671970MA

043618MA

672590E700

672604MA

26X245MA

671990

F-99440

QTY DESCRIPTION

Adjuster, Right Frt. Height

Bolt, Engine

Washer

Nut, Flange

Rod, Pivot

Door, Rear (Black)

Door, Rear (Gray)

Spring

Deflector, Rear

WHEEL & TIRE ASSEMBLY, White, 8"

Bracket, Right Handle

Adjuster, Right Height

Screw

Guard, Rear

Instruction Book

Not F or Reproduction

Copyright © Briggs & Stratton. All Rights reserved

9 25-Feb-2022

Hardware Identification & Torque Specifications

Torque Specification Chart

FOR STANDARD METRIC MACHINE HARDWARE (Tolerance ± 20%)

Torque Specification Chart

FOR STANDARD MACHINE HARDWARE (Tolerance ± 20%)

0

Property

Class

5.6

8.8

10.9

12.9

Class 5.6

Class 8.8

Class 10.9

Class 12.9

Size Of

Hardware in/lbs ft/lbs Nm.

in/lbs ft/lbs Nm.

in/lbs ft/lbs Nm.

in/lbs ft/lbs Nm.

M12

M14

M16

M18

M20

M22

M24

M27

M3

M4

M5

M6

M7

M8

M10

M30

M33

M36

M39

5.88

.56

13.44

1.28

26.4

2.50

44.64

4.3

5.2

7.1

7.7

10.5

15

26

21

36

42 58

64 88

89 121

126 171

169 230

217 295

320 435

435 590

590 800

759 1030

988 1340

13.44

30.72

60.96

7.3

12.1

17.7

35

61

101

147

202

290

390

497

733

995

1349

1740

2249

1.28

2.90

5.75

9.9

16.5

24

48

83

132

200

275

390

530

375

995

1350

1830

2360

3050

1032

1401

1902

2441

3163

287

405

559

708

19.2

43.44

5.97

10.3

16.9

25

50

86.2

136

210

550

745

960

1400

117

185

285

390

1.80

4.10

8.10

14

23

34

67

1900

2580

3310

4290

22.92

2.15

52.56

4.95

7.15

9.7

12.1

16.5

19.9

29

59

27

40

81

103 140

162 220

250 340

346 470

486 660

656 890

840 1140

1239 1680

1681 2280

2278 3090

2935 3980

3798 5150

The guides and ruler furnished below are designed to help you select the appropriate hardware.

10 20 30 40 50 60 70 80 90 100

Nut, M8

Body

Diameter

Body Length

Screw, M8- 1.25 x 25

0

Thread

Diameter (mm)

Inside

Diameter (in)

Threads per inch

1/4

Nut, 1/2-16

1/2

3/4

1

1/4

Thread

Diameter (mm)

Body

Diameter

1/2

3/4

Distance between threads (mm)

Threads per inch

Body

Length (mm)

Body

Length (in)

2

Screw, 1/2- 16 x 2

1/4

1/2

3/4

3

1/4

1/2

3/4

4

Hardware

Grade

No

Marks

SAE Grade 2

Size Of in/lbs

Hardware ft/lbs Nm.

SAE Grade 5 in/lbs ft/lbs Nm.

SAE Grade 8 in/lbs ft/lbs Nm.

8-32

8-36

10-24

10-32

1/4-20

1/4-28

5/16-18

5/16-24

3/8-16

3/8-24

7/16-14

7/16-20

1/2-13

1/2-20

9/16-12

9/16-18

5/8-11

5/8-18

3/4-10

3/4-16

7/8-9

7/8-14

1-8

1-12

19

20

27

31

66

76

140

7.6

8.6

11 15.0

12

20

23

30

35

50

55

65

75

90

100

160 217.6

180 244.8

155

220

240

2.1

2.3

3.1

3.5

16.3

27.2

31.3

40.8

47.6

68.0

74.8

88.4

102.0

122.4

136

190.4

210.8

299.2

326.4

30

31

43

49

8

19

30

35

50

55

75

90

110

3.4

3.5

4.9

5.5

10.9

10 13.6

17 23.1

25.8

40.8

47.6

68.0

74.8

102.0

122.4

149.6

41

43

60

68

12

14

25

29

45

50

70

34.0

61.2

68.0

95.2

80 108.8

110 149.6

120 163.2

150 204.0

4.6

4.9

6.8

7.7

16.3

19.0

34.0

120 163.2

150 204.0

180 244.8

260 353.6

300 408.0

170

220

240

231.2

299.2

326.4

386 525.0

420 571.2

400 544.0

440 598.4

600 816.0

660 897.6

580 788.8

900 1,244.0

640 870.4

1,000 1,360.0

NOTES

1. These torque values are to be used for all hardware excluding: locknuts, self-tapping screws, thread forming screws, sheet metal screws and socket head setscrews.

2. Recommended seating torque values for locknuts: a. for prevailing torque locknuts - use 65% of grade 5 torques.

b. for flange whizlock nuts and screws - use 135% of grade 5 torques.

3. Unless otherwise noted on assembly drawings, all torque values must meet this specification.

Common Hardware Types

Hex Head Capscrew

Washer

Standard Hardware Sizing

When a washer or nut is identified as 1/2” (M8), this is the Nominal size , meaning the inside diameter is 1/2 inch

(8mm metric thread diameter); if a second number is present it represents the threads per inch (distance between threads).

When bolt or capscrew is identified as 1/2 - 16 x 2” (M8 - 1.25 x 50), this means the Nominal size , or body diameter is 1/2 inch (8mm metric thread diameter), the second number,16, represents the threads per inch, (distance between threads). The final number is the body length of the bolt or screw, 2 inches (50mm).

Carriage Bolt

Wrench & Fastener Size Guide

Lockwasher

Hex Nut

1/4” Bolt or Nut

Wrench—7/16”

M6 Bolt or Nut

Wrench—10mm

5/16” Bolt or Nut

Wrench—1/2”

M8 Bolt or Nut

Wrench—13mm

3/8” Bolt or Nut

Wrench—9/16”

M10 Bolt or Nut

Wrench—17mm

7/16” Bolt or Nut

Wrench (Bolt)—5/8”

Wrench (Nut)—11/16”

1/2” Bolt or Nut

Wrench—3/4”

M12 Bolt or Nut

Wrench—19mm

M14 Bolt or Nut

Wrench—22 mm

Copyright © Briggs & Stratton. All Rights reserved

25-Feb-2022

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