EverRide Hornet EZYN2048S, Operator'S & Parts Manual

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47 - BOLT TORQUE CHART
FASTENER TORQUES
Mounting bolts and fasteners may tend to work loose during operation due to vibration or stress. A
visual check of the complete mower should be made daily. All fasteners should be checked for cor-
rect retention torque, weekly, and more often if the unit is being operated in rough areas.
All locally procured fastening hardware should be Grade 5 or equivalent. Use the following chart
for general torque specifications for Grade 5 standard fasteners. Special fastener torques for the
mower are shown separately below.
SAE Grade 5
Fastener Size lbs.-ft. N-m
Lubricated Dry Lubricated Dry
1/4-20 7 9 9 12
5/16-18 15 20 20 27
3/8-16 30 35 41 47
7/16-14 45 55 61 75
1/2-13 60 80 81 108
9/16-12 100 120 136 163
5/8-11 130 170 176 231
3/4-10 220 300 298 407
Metric Class 8.8 or 9.8
Fastener Size lbs.-ft. N-m
Lubricated Dry Lubricated Dry
M8 17 20 23 27
M10 34 40 46 54
M12 55 70 75 95
M14 90 110 122 149
M16 145 175 197 237
M20 280 350 380 475
NOTE: “Lubricated" means coated with a lubricant such as engine oil. "Dry" means plain or zinc plated
without any lubrication.
IMPORTANT:
Torque values SHOULD NOT be followed when fastening plastic parts!
SPECIAL FASTENER TORQUES
Mowing Blade Retaining Bolt - Grade 8 (9/16-12 x 1-3/4) ....... 110 to 130 ft. lbs. (150-177 N

m)
Spindle Pulley Retaining Nut (3/4-16 UNF) ............................. 80 ft. lbs. (109 N

m)
Spindle Housing Retaining Nuts (7/16-20 UNF) ...................... 35-45 ft. lbs. (48-61 N

m)
Wheel Nuts (1/2-20 Lug Nuts) ................................................. 75 ft. lbs. (101 N

m)
Hub Retaining Nuts .................................................................. 350-450 ft. lbs. (475-61 0 N

m)
NOTE: Refer to your engine owner’s manual for engine hardware torques.