Grasshopper 721D2 User Manual

15
Bolt Head Markings
SAE Grade 2
(no dashes)
SAE Grade 5
(3 radial dashes)
SAE Grade 8
(6 radial dashes)
MEASUREMENT CONVERSION
Measurements expressed in this manual are
decimal values. Use the chart below if you are
unsure of a measurement to obtain the fractional
equivalent.
BOLT SIZE AND TIGHTENING
RECOMMENDATIONS
The chart below lists the correct tightening
torque for bolts used on Grasshopper equip-
ment. When bolts are to be tightened or replaced
refer to this chart to determine the grade of bolt
and proper torque (except when specific torque
values are assigned in the manual text).
Decimal
Conversion Table - Inches
Decimal Fraction
0.062
0.125
0.187
0.250
0.312
0.375
0.437
0.500
1/16
1/8
3/16
1/4
5/16
3/8
7/16
1/2
0.562
0.625
0.687
0.750
0.812
0.875
0.937
1.000
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
Fraction
Decimal Fraction ft lb (Nm) ft lb (Nm) ft lb (Nm)
0.250 1/4 6 (8) 11 (15) 14 (19)
0.312 5/16 13 (18) 21 (28) 25 (34)
0.375 3/8 23 (31) 38 (52) 55 (75)
0.437 7/16 37 (50) 55 (75) 80 (108)
0.500 1/2 57 (77) 85 (115) 120 (163)
0.562 9/16 82 (111) 125 (170) 180 (244)
0.625 5/8 111 (151) 175 (237) 230 (312)
0.750 3/4 200 (271) 300 (407) 440 (597)
0.875 7/8 280 (380) 450 (610) 720 (976)
1.000 1 350 (475) 680 (922) 1035 (1403)
Bolt Diameter in Inches
Recommended Bolt Torque
SAE Grade 2 SAE Grade 5 SAE Grade 8
ItemItem
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Description
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ItemItem
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Item
OrderOrder
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Description
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No.
ROPS & SEAT ASSEMBLY
01-05087A
Rev. 02-06
1 321518 Seat Cushion
2 321519 Back Cushion
3 321523 Arm Rest
4 723386 Side Member – Rt.
5 723387 Side Member – Lt.
6 822630 Seat Edge Trim
7 644816 Seat Bottom
8 253193 Whiz Bolt
9 722388 Seat Panel
10 253191 Whiz Bolt
11 183871 Seat Switch - Twist
12 424095 Seat Isolator
13 644618 Seat Hinge Pin
14 253192 Whiz Bolt
15 253035 Whiz Nut
16 754240 Seat Handle – Dual Latch
17 754226 Reinforcement – Seat Handle
18 730230 Pivot Pin - Seat
19 284408 Torsion Spring
20 260606 Ring Cotter
21 253043 Whiz Nut
22 253176 Whiz Bolt
23 253025 Whiz Nut
24 324200 Seat Belt – Non Retract
25 243551 Bolt
26 257063 Nylon Washer
27 257062 Washer
28 253470 Nut - Nylon Insert
29 324103 ROPS Tube
30 901645 Spacer - ROPS
31 243840 Bolt
32 424176 Flap – Seat Panel
33 253970 Lock Nut
34 283516 Spring – Compression
35 422127 Cap – Seat Spring
36 253203 Whiz Bolt
37 729230 Reinforcement – Brake Pin
38 723272 Deflector - Seat
39 722776 Clamp - Wiring Mount Bracket
40 254431 Speed Nut
41 253173 Whiz Bolt
42

Grasshopper 721D2 Specifications

General

Brand	Grasshopper
Model	721D2
Category	Lawn Mower
Language	English