MTD 825r User Manual

Reissued 7/02

ENGINE PARTS - MODEL 825r

4-CYCLE GAS TRIMMER

PPN 41CD825A034

Part Numbers On Following Page

1

46

49

50

51

52

53

54

47

48

55

57

58

61

86

59

60

67

72

73

74

71

70

69

66

75

76

77

79

78

68

80

81

82

83

81

84

65

64

63

62

56

2

3

16

17

19

20

21

22

23

24

25

26

27

85

28

29

31

32

34

37

4

5

8

10

6

7

9

13

11

38

12

15

14

39

18

40

41

42

43

44

30

33

36

35

45

88

ENGINE PARTS - MODEL 825r
4-CYCLE GAS TRIMMER

PPN 41CD825A034

Reissued 7/02

Item

Part No. Description

46 791-181247 Pal Nut Retaining Ring
47 753-1199 Recoil Pulley
48 753-1236 Recoil Spring
49 791-182366 Nut Clip
50 791-181079 Pull Handle
51 791-611061 Rope Guide
52 791-613103 Rope
53 791-181020 Starter Housing Assembly

(includes 46-52 & 54)
54 753-04154 Starter Housing Screw
55 791-182368 Clutch Washer
56 753-1238 Clutch with Spacer
57 791-153592 Clutch Drum
58 753-1239 Clutch Cover
59 791-145569 Anti-Rotation Screw
60 753-1240 Screw
61 791-181345 Clutch Cover Screw
62 791-182725 Ignition Module with Screws
63 791-181065 Spacer
64 791-182736 Flywheel
65 791-182743 Shroud Assembly with Screws

(includes 86)
66 791-182376 Crankcase Assembly
67 791-182375 90˚ Elbow
68 791-182379 Breather Hose
69 791-181015 Cam Gear
70 753-1242 Cam Follower
71 791-181013 Cam Bracket
72 791-181012 Cam Bracket Screw
73 791-181040 Valves, Intake and Exhaust
74 791-182374 Cylinder Gasket
75 791-181018 Oil Pan Gasket
76 791-182377 Oil Pan (includes 75 & 77)
77 791-181020 Oil Pan Screw
78 791-182378 Dipstick Assembly (includes 79)
79 791-182290 O-Ring
80 791-181009 Connecting Rod
81 791-181008 Wrist Pin Button
82 753-1243 Piston
83 791-181006 Wrist Pin
84 791-181005 Piston Ring Set
85 791-182409 Washer
86 791-181861 Screw
87 791-182365 Ignition Switch Assembly w/ Leads

* 791-180852B Spark Plug
* 753-04087 Short Block Assembly

(includes 3-15, & 66-84)

* 791-180142 Starter Pawl Repair Kit
* 753-04014 Carburetor Repair Kit
* 791-182745 Cylinder Assembly (includes 9, 12, 14, 74)

* Parts not shown

Item Part No. Description

1 753-1222 Engine Cover
2 791-182339 Engine Cover Screws
3 791-181025 Valve Cover Screw
4 791-182098 Valve Cover
5 791-182099 Valve Cover Gasket
6 791-182340 Rocker Adjustment Nut
7 791-182101 Rocker Arm Pivot
8 791-182100 Rocker Arm

9 791-182341 Rocker Arm Stud
10 791-182103 Valve Spring Retainer
11 791-181038 Valve Spring
12 791-182102 Push Rod Guide
13 791-181033 Push Rod
14 791-182653 Cylinder Head Assembly
15 791-182344 Cylinder Screw
16 753-1226 Intake Baffle
17 791-182749 Carburetor Mount Gasket
18 753-1232 Muffler Baffle
19 791-181034 Nut
20 791-182347 Carburetor Mount (includes 19)
21 791-182348 Carburetor Mount Screw
22 791-182732 Carburetor Gasket
23 753-1225 Carburetor with Primer
24 791-181751 O-Ring, Carburetor
25 791-182350 Air Filter/Choke Cover Assembly

(includes 28 & 29)
26 791-182097 Breather Tube
27 791-181750 Air Filter Mounting Screw
28 791-181757 Air Filter
29 791-182351 Air Filter Cover
30 791-182271 Fuel Cap
31 791-182352 Fuel Return Line
32 791-182353 Fuel Pick-Up Line with Filter
33 791-181080 Screw
34 791-182354 Washer
35 791-182355 Fuel Tank Assembly (includes 30-32)
36 791-182356 Fuel Tank Shield
37 753-1231 Throttle Cable
38 791-181048 Muffler Gasket
39 791-182359 Muffler (includes 40, 42-44)
40 791-180890 Spark Arrestor Screen
41 791-181045 Screen Cover
42 791-181046 Screw
43 791-182361 Muffler Mounting Screw
44 753-04092 Muffler Cover
45 753-1241 Nut