Generac Power Systems MC User Manual
Page 5
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1.1.3- TORQUE SPECIFICATIONS (GENERAL)
STANDARD TORQUE VALUES
All Values in FOOT-POUNDS
Grade 2
Grade 5
Grade 7
Grade 8
BOLT SIZE
DRY
LUB
DRY
LUB
DRY
LUB
DRY
LUB
1/4-20
5
4
8
6
10
8
12
9
1/4-28
6
5
10
7
12
9
14
11
5/16-18
11
8
17
13
21
16
24
18
5/16-24
13
10
19
15
24
18
27
21
3/8-16
20
15
31
24
38
29
44
34
3/8-24
23
17
35
27
43
33
49
38
7/16-14
32
25
49
38
61
47
70
54
7/16-20
36
27
55
42
68
52
78
60
1/2-13
49
38
75
58
93
72
105
82
1/2-20
55
42
85
65
105
80
120
90
9/16-12
70
54
110
84
135
105
155
120
9/16-18
78
60
120
93
150
115
170
132
5/8-11
92
71
150
115
185
145
210
165
5/8-18
105
81
170
130
210
160
240
185
3/4-10
165
125
270
205
330
250
375
290
3/4-16
180
140
295
230
365
280
420
320
7/8-9
200
155
395
305
530'
405
605
455
7/8-14
225
170
435
335
585
450
670
515
1-8
300
230
590
455
795
610
905
695
1-14
340
260
680
5.10
GRADE
BOLT HEAD
SYMBOL
o
1.1.4- TORQUE SPECIFICATIONS (SPECIAL)
INCH-POUNDS
FOOT-POUNDS
Spark Plug
216-264
18-22
Cylinder Head Bolts
264-348
22-29
Connecting Rod Cap Bolts
216-264
18-22
Engine Gear Cover Bolts
90-110
7.5-9
Blower Fan (Special M14 Hex Nut)
600-660
50-55
Rotor Bolt
180-200
15-17
Mechanical Fuel Pump Bolts
25-30
1
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