Husqvarna MZ61 warranty Technical Data, Torque Specifications

TECHNICAL DATA

Torque Specifications

Engine crankshaft bolt	50 ft/lb (67 Nm)
Deck pulley bolts	75 ft/lb (100 Nm)
Lug nuts	75 ft/lb (100 Nm)
Blade bolt	55 ft/lb (75 Nm)

Standard ¼" fasteners	9 ft/lb (12 Nm)
Standard 5/16" fasteners	18 ft/lb (25 Nm)
Standard 3/8" fasteners	33 ft/lb (44 Nm)
Standard 7/16" fasteners	52 ft/lb (70 Nm)
Standard ½" fasteners	80 ft/lb (110 Nm)

HEX HEAD CAP SCREWS

The torque values shown should be used as a general guideline when specific torque values are not given.

U.S. Standard Hardware

Grade		SAE Grade 5		SAE Grade 8		Flangelock Screw
						w/Flangelock Nut
	Size	ft./lbs	Nm	ft./lbs	Nm	ft./lbs	Nm
	¼	9	12	13	18
fine	5/16	18	24	28	38	24	33
inches,	3/8	31	42	46	62	40	54
	7/16	50	68	75	102
in	½	75	102	115	156
SizeShank(Diameter coarseorthread)
	11/8	782	1060	1410	1912
	9/16	110	149	165	224
	5/8	150	203	225	305
	¾	250	339	370	502
	7/8	378	512	591	801

** Grade 5 - Minimum commercial quality (lower quality not recommended)

Metric Standard Hardware

Grade			Grade 8.8			Grade 10.9			Grade 12.9
	Size	ft./lbs		Nm	ft./lbs		Nm	ft./lbs		Nm
thread)	M4	1.5		2	2.2		3	2.7		3.7
	M5	3		4	4.5		6	5.2		7
coarseor	M6	5.2		7	7.5		10	8.2		11
	M8	13.5		18	18.8		25	21.8		30
	M7	8.2		11	12		16	15		20
fine
	M10	24		33	35.2		48	43.5		59
inches,	M14	70.5		96	100		136	119		161
	M12	43.5		59	62.2		84	75		102
in
	M16	108		146	147		199	176		239
(Diameter
	M20	195		264	275		373	330		447
	M18	142		193	202		274	242		328
Size
	M22	276		374	390		529	471		639
Shank
	M27	530		719	735		996	904		1226
	M24	353		478	498		675	596		808

53