Husqvarna Z 554X Manual Del Operador página 34

TECHNICAL DATA
Torque Specifications
Engine crankshaft bolt
Deck pulley bolts
Lug nuts
Spark Plug Torque 20 ft-lb (27 Nm)
Blade bolt
U.S. Standard Hardware
Grade
Size
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1-1/8
** Grade 5 - Minimum commercial quality (lower quality not recommended)
Metric Standard Hardware
Grade
Size
M4
M5
M6
M7
M8
M10
M12
M14
M16
M18
M20
M22
M24
M27
34
50 ft/lb
150 ft/lb
75 ft/lb
90 ft/lb
HEX HEAD CAP SCREWS
The torque values shown must be used as a general guideline
when specific torque values are not given.
SAE Grade 5
ft./lbs Nm
9 12
18 24
31 42
50 68
75 102
110 149
150 203
250 339
378 512
782 1060
Grade 8.8
ft./lbs
1.5
3
5.2
8.2
13.5
24
43.5
70.5
108
142
195
276
353
530
Standard 1/4" fasteners
Standard 5/16" fasteners
Standard 3/8" fasteners
Standard 7/16" fasteners
Standard 1/2" fasteners
SAE Grade 8
ft./lbs
13
28
46
75
115
165
225
370
591
1410
Grade 10.9
Nm ft./lbs
2 2.2
4 4.5
7 7.5
11 12
18 18.8
33 35.2
59 62.2
96 100
146 147
193 202
264 275
374 390
478 498
719 735
9 ft/lb
18 ft/lb
33 ft/lb
52 ft/lb
80 ft/lb
Flangelock Screw
w/Flangelock Nut
Nm ft./lbs
18
38 24
62 40
102
156
224
305
502
801
1912
Grade 12.9
Nm ft./lbs
3 2.7
6 5.2
10 8.2
16 15
25 21.8
48 43.5
84 75
136 119
199 176
274 242
373 330
529 471
675 596
996 904
Nm
33
54
Nm
3.7
7
11
20
30
59
102
161
239
328
447
639
808
1226