MTD 663 manual Models 643

Models 643 & 663

26

27

36

28

29

1

30

2

3

4

16

11

12

9

10

8

4 7

1915

16

16

19

16

21

22

14

23	17
	18

20

24

IMPORTANT: For a proper working machine, use Factory Approved Parts.

V-BELTSare specially designed to engage and disengage safely. A substitute (non OEM) V-Belt can be dangerous by not disengaging completely

6 5

13

31 33

25

34

32

35

22