12
10
SECTION 9: PARTS LIST FOR MODELS 521 & 721
41
39
44
35
35
44
35
44
33
43
42
18
3
14
21
8
20
10
28
22
4
1
13
11
21
2
16
7
29
12
17
25
22
28
19
15
30
6
9
9
13
31
23
27
CABLE TO BE ABOVE
WHEEL AXEL
32
38
45
40
12
12
17
17
46
37
36
24
49
26
52
50
48
47
51
34
3
53
14