Mfg. No: 2029902
B-110, 10HP
Copyright © Briggs & Stratton. All Rights reserved
25-Feb-2022
990345 - 36" Rotary Snow Blower Attachment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
990370 - Weed Cutter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
990407 - 42" Rotary Mower. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
990465 - 46" Sickle Bar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
990452 - Vacuum Collector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
or
Not F
Reproduction
Copyright © Briggs & Stratton. All Rights reserved
2 25-Feb-2022
ELECTRIC STARTER-GENERATOR SYSTEM - Mfg Nos. 990314 thru 990433. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRAME, HOOD, GRILL & INST. PANEL - Mfg Nos. 990432 thru 990569. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR LIFT DRAW BAR GROUP - Mfg Nos. 990308 thru 990497. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
SEAT AND FENDERS - Mfg. Nos. 990432 thru 990569. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16
4
8
Torque Specification Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 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: 2029902 or
Not F
Reproduction
Copyright © Briggs & Stratton. All Rights reserved
4 25-Feb-2022
A
E
F
G
H
B
C
D
J
K
L
M
AL
AM
AN
AP
AG
AH
AJ
AK
AC
AD
AE
AF
Y
Z
AA
AB
AQ
AR
AS
AT
AU
AV
AW
AX
AY
AZ
S
T
U
V
N
P
Q
R
W
X
2122138
2705015
2720003
2717005
122142
122143
2122046
2720002
2717003
2720003
2717005
2122131SM
122172
122144
122147
1686702SM
2122111SM
122141
122171
122170
122183
122173
122174
2720003
2718042
122041
122149
2122023SM
122140
2122146
2157004
2720001
2705017
2720001
2717001
2705019
122193
154002
2705030
2720003
2717005
2157102SM
2715048
2719002
2720001
2717001
2122190
QTY DESCRIPTION
Motor-Generator
-FOR SERVICE CONTACT YOUR LOCAL UNITED MOTOR SERVICE DEALER
(DELCO-REMY)
Cable, Generator, Start
Terminal Cover
Wire, Reg. Gen.
"V"-Belt-(157524 on 399 & 400)
Support Assembly
Lock Washer, 5/16"
Hex Capscrew, 5/16"-18 x 3/4" lg.
Lock Washer, 5/16"
Hex Nut, Full, 5/16"-18
Hex Capscrew, 5/16"-18 x 1-1/4"
Voltage Regulator
-FOR SERVICE CONTACT YOUR LOCAL UNITED MOTOR SERVICE DEALER
(DELCO-REMY)
Bracket
Hex Capscrew, 1/4"-20 x 3/4" lg.
Lock Washer, 1/4"
Hex Nut, Full, 1/4"-20
Belt Tightener
Lock Washer, 5/16"
Hex Nut, Full, 5/16"-18
Battery
-FOR SERVICE CONTACT YOUR LOCAL EXIDE DEALER
Cable (Battery to Starter)
Cable (Battery to Ground)
Hex Capscrew, 1/4"-20 x 5/8" lg.
Lock Washer, 1/4"
Hex Nut, Full, 1/4"-20
Battery Insulation
Fuel Tank Insulation
Starter Switch
Lock Washer, 3/8"
Hex Nut, Full
Lock Washer, 1/4"
Hex Nut, Full, 1/4"-20
Ammeter
Fuse 20 AMP.
Wire (Ammeter to Regulator)
Wire (Ground to Ground)
Ignition Switch
Keys
Wire (Switch to Engine)
Wire (Fuse to Ammeter)
Wire (Fuse to Starter)
Clip Fuse
Bracket Battery
"J" Bolt
Lock & Washer 1/4"
Wing Nut 1/4"-20
Copyright © Briggs & Stratton. All Rights reserved
5 25-Feb-2022
Note: Unless noted otherwise, use the standard torque specifications Mfg. No: 2029902 or
Not F
Reproduction
Copyright © Briggs & Stratton. All Rights reserved
6 25-Feb-2022
BA
BA
2719002
122199
QTY DESCRIPTION
Plain Washer
Battery Film
Not F or Reproduction
Copyright © Briggs & Stratton. All Rights reserved
7 25-Feb-2022
Note: Unless noted otherwise, use the standard torque specifications Mfg. No: 2029902 or
Not F
Reproduction
Copyright © Briggs & Stratton. All Rights reserved
8 25-Feb-2022
AE
AF
AG
AH
AA
AB
AC
AD
Y
Z
W
X
S
T
U v
N
P
Q
R
J
K
L
M
E
F
G
H
A
B
C
D
AY
AZ
BA
BC
AT
AU
AV
AW
AP
AQ
AR
AS
AJ
AK
AL
AM
BD
BB
BF
157065
157090
157089
2705004
2720002
2717003
164008
2718022
2718030
2715082
157488
2719002
2720001
2705019
2720001
2705018
164009
2714003
164028
164027
2714003
164011
2718041
2718024
164003
2157077SM
2705019
2717511
2717001
2720001
2705012
164014
164013
2718032
2718043
2715018
164259
2718032
2715018
2720003
2717005
164010
2720006
916608
157057
157060
157482
2715080
2720006
QTY DESCRIPTION
Support Assembly, Fuel Tank & Battery
Steering Bushing
Hex. Cap Screw, 5/16"-18 x 1-1/4"
Full Lock Hex. Nut, 5/16"-18
Full Hex. Nut 5/16"-18
Lock Washer, 5/16"
Hex. Cap Screw, 5/16"-18 x 5/8"
R.H. Side Panel
L.H. Side Panel
Nut Retainer
Nut Retainer
Hex. Cap Screw, 1/4"-20 x 5/8"
Inst. Panel Assembly
Nut Retainer (Frame Cover)
Hex. Cap Screw, 1/4"-20 x 5/8"
Lock Washer, 1/4"
Full Hex. Nut, 1/4"-20
Frame Assembly
Lock Washer, 7/16"
CAPSCREW, Hex, 7/16"-14 x 1-1/2" lg.
Angle Assembly (Frame Rear)
Hex. Cap Screw, 7/16"-14 x 1-1/2"
Lock Washer, 7/16"
Full Hex. Nut, 7/16"-14
Hex. Cap Screw, 7/16"-20 x 1-1/2"
Foot Rest
L.H. Foot Rest Pad
R.H. Foot Rest Pad
Hex. Cap Screw, 3/8"-16 x 3/4"
Lock Washer, 3/8"
Full Hex. Nut, 3/8"-16
Cover & Tube Assembly
Retainer Nut (Front)
Retainer Nut, (Rear)
Nut-hex-Whiz-Lock Flange. 5/16-18 x 3/4"
Bracket Assembly
Plain Washer, 5/16"
Lock Washer, 5/16"
Hex. Cap Screw, 5/16"-18 x 1-1/4"
Lock Washer, 5/16"
Hex. Cap Screw. 5/16"-18 x 1-1/2"
Grille
Self Tapping Screw, #810 x 1/2"
R.H. Side Plate
L.H. Side Plate
Self Tapping Screw, #10 x 1/2"
Hood
Nut Retainer (Rear)
Nut Retainer (Front)
Copyright © Briggs & Stratton. All Rights reserved
9 25-Feb-2022
Note: Unless noted otherwise, use the standard torque specifications Mfg. No: 2029902 or
Not F
Reproduction
Copyright © Briggs & Stratton. All Rights reserved
10 25-Feb-2022
CG
CH
CJ
CK
CL
CM
CN
CP
CQ
CR
CC
CD
CE
CF
BY
BZ
CA
CB
BQ
BR
BS
BT
BU
BV
BW
BX
BL
BM
BN
BP
BG
BH
BJ
BK
2715037
164120
164121
164054
1729255SM
2705018
2720001
2717001
157020
2718032
2720003
164129
2715018
2164042SM
164019
2158475SM
157315
2714021
122186
2705015
2720003
2719006
2717005
2717007
710004
QTY DESCRIPTION
Thumb Screw
Felt Pad
Felt Pad
Shifter Rod Assembly
Ball
Hex Cap Screw, 5/16"-18 x 1-1/2"
Lock Washer, 5/16"
Full Hex. Nut, 5/16"-18
Shift Rod Guide Assembly
Retainer Nut
Lock Washer, 1/4"
Hood Strip
Hex. Cap Screw, 1/4"-20 x 5/8"
Throttle Control
Choke Control
Bowden Wire Clip
Throttle Cable Bracket
Self Tapping Screw, 1/4"-20 x 5/8"
Clamp
Hex, Cap Screw, 1/4"-20 x 5/8"
164257
164135
164137
720007
2717023
2164191
156279
Full Hex. Nut, 1/4"-20
Full Hex. Nut, #10-32
Mach. Rd. Hd. Screw, #10-32 x 3/8"
Self Tapping Rd. Hd. Screw, #10-24 x 1/2"
Lock Washer
Simplicity & No. 2210 Film
Plate, Assy.,
Emblem "S"
Washer Lock
Hex Nut #10-24
Plug Button
Plug Button
Copyright © Briggs & Stratton. All Rights reserved
11 25-Feb-2022
Note: Unless noted otherwise, use the standard torque specifications Mfg. No: 2029902 or
Not F
Reproduction
Copyright © Briggs & Stratton. All Rights reserved
12 25-Feb-2022
AS
AT
AU
AV
AN
AP
AQ
AR
AJ
AK
AL
AM
AE
AF
AG
AH
AW
AX
AY
AZ
BA
BB
AA
AB
AC
AD
Y
Z
W
X
S
T
U
V
P
Q
R
E
F
G
H
A
B
C
D
J
K
L
M
N
QTY DESCRIPTION
157013
2722001
154226
2152006SM
2154227SM
2156209
1708298SM
1918196SM
157651
916608
2719001
2720006
2717022
2705041
2720006
154202
2705042
2720006
2715018
2720003
2717005
1918196SM
154209
157620
2705031
2705016
2720002
157620
2705031
2720002
157640
2157624
2713503
157301
717008
2157631
157225
2722006
2705047
2154214
1729254SM
2713503
2157625SM
2157120SM
2713502
157628
2157652 Not F
154224
2723007
Lift Lever Quadrant
Lift Lever Bearing (1542910)*
Hex. Cap Screw, 3/8"-16 x 7/8"
Hex. Cap Screw, 3/8"-16 x 1-1/4"
Lock Washer, 3/8"
Lift Lever Bearing (154210)*
Hex. Cap Screw 3/8"-16 x 7/8"
Lock Washer, 3/8"
Lift Shaft Assembly (157105)*
Set Collar (8211005)
Set Screw, 5/16"-18 x 5/16"
Rear Lift Rod
Full Hex Nut 1/2"-20
-Not used on 496 & 497
Adj-Yoke End (154304)*
Pin
Cotter Pin, 1/8" x 1"
Hex. Cap Screw, 7/16"-14 x 1 3/4"
Tiller Lift Assembly
Set Collar
Set Screw 5/16"-18 x 5/16" or Reproduction
Key
Set Screw 5/16"-18 x 1/4"
Lift Lever Assembly (157012)*
Key (157120)*
Set Screw 5/16"-18 x 1/4"
Lift Lever Latch
Roll Pin
Latch Rod
Cotter Pin, 3/32" x 3/4"
Spacer
Spring
Thumb Button
Handle Grip
Pin
Spring Clip
Arm Assembly (154200)*
CAPSCREW, Hex, 7/16"-14 x 1-1/2" lg.
Plain Washer, 3/8"
Lock Washer, 7/16'
Full Hex. Nut, 7/16"
Hex. Cap Screw, 7/16"-14 x 1"
Lock Washer, 7/16"
Draw Bar Assembly
Hex. Cap Screw, 7/16"-14 x 1-1/4"
Lock Washer, 7/16"
Screw 1/4-20 x 5/8" lg.
Lock Washer 1/4"
Hex Nut Full 1/4-20
Spring Clip
13
Copyright © Briggs & Stratton. All Rights reserved
25-Feb-2022
Note: Unless noted otherwise, use the standard torque specifications Mfg. No: 2029902 or
Not F
Reproduction
Copyright © Briggs & Stratton. All Rights reserved
14 25-Feb-2022
BC
BD
BE
BF
157091
2155037SM
154422
2705001
QTY DESCRIPTION
Pull Bar
Round Head Pin
Seat Stop
Hex, Capscrew, 5/16"-18 x 7/8"
Not F or Reproduction
Copyright © Briggs & Stratton. All Rights reserved
15 25-Feb-2022
Note: Unless noted otherwise, use the standard torque specifications Mfg. No: 2029902 or
Not F
Reproduction
Copyright © Briggs & Stratton. All Rights reserved
16 25-Feb-2022
N
P
Q
R
J
K
L
M
E
F
G
H
A
B
C
D
2156203
166111
2164029SM
2717510
2705016
2159085SM
2164145
2720001
2717001
2705012
2720001
2717001
2705012
2720001
2719006
2720001
QTY DESCRIPTION
Seat Assembly
Seat Deck Assembly
Seat Deck Bracket, Front
Hex, Locknut, Full, 3/8Ó - 16
Hex, Head Capscrew, 3/8Ó - 16 x 1-1/4Ó
Cushion Connector, Front
Spring Clip
Lock Washer, 5/16Ó
Hex, Nut, full, 5/16Ó - 18
Hex, Head Capscrew, 5/16Ó - 18 x 5/8Ó lg.
Lockwasher, 5/16Ó
Hex, Nut, Full, 5/16Ó - 18
Hex, Head Capscrew, 5/16Ó - 18 x 5/8Ó lg.
Lockwasher, 5/16Ó
Plain Washer, 1/4Ó
Lockwasher, 5/16
Not F or Reproduction
Copyright © Briggs & Stratton. All Rights reserved
17 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
