McCulloch 28cc, 32cc User Manual

McCulloch products are identified by a model number (in this instance

400128) followed by a suffix number (01). Suffix numbers denote
variations in parts or assemblies used in the manufacture of this
product.
Illustrated Parts Lists (IPLs) contain a PART NUMBER, DESCRIPTION,
UNITS per assembly and STOCKING CODE for each part.

Stocking Codes are:

A - Dealer stocked. Fast to medium moving part.
B - Distributor stocked. Medium to slow moving part.
C - Factory stocked. Slow moving part.

NOTE: The following explains symbols and footnotes in this IPL:

(-)

A dash preceding a PARTNUMBER indicates that it is a
new part number, different from the one listed in the
previous IPL for this unit.

(.)

One or more dots (. Spring, Starter) preceding a part
DESCRIPTION indicates the part is included in the kit or
assembly described directly above the dot(s).

(-- --)

If four dashes appear in place of a PARTNUMBER, the
part is not available individually but is included in the next
higher assembly or subassembly.

Circled numbers preceding a DESCRIPTION footnote the
part or assembly to additional information on the page.

(*)

An asterisk denotes that choices follow or precede.

(†)

Serial Number Prefix 22- denotes CARB approved unit -­all parts are interchangeable with Serial Number
Prefix 12-.

The policy of McCulloch is one of continual improvement in design,
manufacturing and engineering advancement wherever possible to
assure still finer power tools. Hence, specifications, equipment colors,
design and manufacturer’s suggested list prices are subject to change
without notice. McCulloch reserves the right to make such changes
without prior notification or obligation to backfit or supply backfit
components for units previously shipped from the factory.

(†)SERIAL
MODEL NUMBER MODEL ENGINE
NAME PREFIX NUMBER SIZE DRIVE SHAFT HANDLE

MT3310 - - 28cc DIRECT 44” D
MT3311 - - 32cc CLUTCH

48” D
MAC 1385L 22- 400132-93 32cc CLUTCH 48” D
MAC 2816 12- / 22- 400128-01 28cc DIRECT 44” D
MAC 2816 12- / 22- 400128-19 28cc DIRECT

44” D
MAC 2816 12- / 22- 400128-21 28cc DIRECT 44” D
MAC 2816 12- / 22- 400128-27 28cc DIRECT 44” D
MAC 2816 12- / 22- 400128-51 28cc DIRECT 44” D
MAC 2816 12- / 22- 400128-73 28cc DIRECT 44” D
MAC 2816 12- 400128-85 28cc DIRECT 44” D
MAC 2816 12- / 22- 400128-93 28cc DIRECT 44” D
MAC 2816 22- 400128-97 28cc DIRECT 44” D
MAC 2818 12- / 22- 400128-02 28cc CLUTCH 48” D
MAC 2818 12- / 22- 400128-30 28cc CLUTCH 48” D
MAC 2818 12- / 22- 400128-58 28cc CLUTCH 48” D
MAC 2818 12- / 22- 400128-94 28cc CLUTCH 48’ D
Eager Beaver 282 12- 400128-05 28cc DIRECT 44” D
Eager Beaver 282 12- 400128-47 28cc DIRECT 44” D
Eager Beaver 287 12- 400128-10 28cc CLUTCH 48” D
Eager Beaver 287 12 400128-28 28c CLUTCH 48” D
Eager Beaver 287 12- 400128-48 28cc CLUTCH 48” J
Eager Beaver 287 12- 400128-52 28cc CLUTCH

48” D
ProMac I Super 12- / 22- 400132-01 32cc DIRECT

48” J
ProMac I Super 12- 400132-44 32cc

DIRECT 48” D
PowerPro P1528 22- 400128-96 28cc DIRECT 44” D
PowerPro P1732C 22- 400132-86 32cc CLUTCH

44” D
Roadrunner III 12- / 22- 400128-11 28cc DIRECT 44” J
Roadrunner III 12- / 22- 400128-18 28cc CLUTCH 44” J
Roadrunner III 12-

400128-25 28cc DIRECT 44” J
Roadrunner III 12- 400128-59 28cc DIRECT 44” D
Roadrunner III 12- / 22- 400128-61 28cc DIRECT 48” J
Roadrunner III 12-

400128-83 28cc CLUTCH 44” D
Silver Eagle 28 12- / 22- 400128-03 28cc DIRECT 44” D
Silver Eagle 28C 12- / 22- 400128-06 28cc CLUTCH 48” J
Silver Eagle 28 12- / 22- 400128-17 28cc DIRECT 44” D
Silver Eagle 28C 12- / 22- 400128-20 28cc CLUTCH 48” J
Silver Eagle 28 12- 400128-49 28cc DIRECT 44” D
Silver Eagle 28C 12- 400128-50 28cc DIRECT 48” J
Silver Eagle 28C 12- 400128-74 28cc CLUTCH 48” J
Silver Eagle 28 12- 400128-75 28cc DIRECT 44” D
FR 15” DD 44” 90- 002815-00 28cc DIRECT 44” D
FR 15” DD 44” 90- 002816-00 28cc DIRECT 44” D
FR 17” CD 48” 90- 002817-00 28cc CLUTCH 48” D
FR 17” CD 48” 90- 002818-00 28cc CLUTCH 48” D

P.O. Box 31567

Tucson, Arizona 85751-1567 • U.S.A.

McCulloch 2003 • Printed in U.S.A.

PN 211703-03

28cc and 32cc

GAS POWERED CURVED SHAFT

STRING TRIMMERS

MARCH 2003

ILLUSTRATED PARTS LIST

2

POWERHEAD ASSEMBLY

FIGURE 1

73

73

29

31

30

63

63

62

61

65

1

64

5

4

3

8

7

2

66

59

47

46

43

44

45

40

41

37/38

34

56

53

54

55

52

52

50

60

58

57

67

68

22

35

11

9

9

71

32 36

48

42

39

51

23

28

21

19

20

18

17

14

13

16

15

26

69

70

25

27

24

––2

2––

––3

––7

6––

––8
––23

––24

23–––25

––26
––27

––33––

32–––37

––38

––34
––35
––36

––42

42–

––43––

––44
––45
––46
––47

––51

51–

––52

––53
––54

53–

––55
––56

––29

29–––30

––31

––59

59–

––60

72

10

12

49

7

FIGURE 4

CARBURETOR ASSEMBLY

A - 323602-03 Carburetor, Walbro WT 434 1
1 -- -- . Ring, Screen Retainer 1
2 -- -- . Ring, Shaft Retainer 1
3 -- -- . Lever, Throttle 1
4 -- -- . Cover, Metering Lever 1
5 B 300072 . Cover, Fuel Pump 1
6 -- -- . Shaft Asy, Throttle 1
7 -- -- . Valve, Throttle 1
8 -- -- . Shaft Asy, Choke 1
9 -- -- . Valve, Choke 1

10 -- -- . Valve, Inlet Needle 1
11 -- -- . Seat Asy, Check Valve 1
12 -- -- . Plug, Cup 1
13 -- -- . Plug, Welch 1
14 -- -- . Ball, Choke Friction 1
15 -- -- . Gasket, Metering Diaphragm 1
16 -- -- . Gasket, Fuel Pump 1
17 -- -- . Diaphragm, Fuel Pump 1
18 -- -- . Diaphragm Asy, Metering 1
19 -- -- . Screw, Valve 2
20 -- -- . Screw, Metering Lever Pin 1
21 -- -- . Screw, Pump Cover 1
22 -- -- . Spring, Idle Adjust Kit 1
23 -- -- . Screw, Metering Cover 4
24 A -- -- . Spring, Choke Friction 1
25 -- -- . Spring, Idle Needle 1
26 -- -- . Spring, High Speed Needle 1
27 -- -- . Spring, Throttle Return 1
28 -- -- . Spring, Metering Lever 1
29 -- -- . Needle, High Speed 1
30 -- -- . Needle, Low Speed 1
31 -- -- . Screen, Check Valve 2
32 -- -- . Screen, Fuel Inlet 1
33 -- -- . Pin, Metering Lever 1
34 -- -- . Lever, Metering 1
35 -- -- . Ring, High Speed 1
36 -- -- . Washer, High Speed 1
37 B 323601 . Cap, Limiter, High, Black 1
38 B 323602 . Cap, Limiter, Low, White 1

ITEM STK

PART UNITS

NO. CODE NUMBER DESCRIPTION PER ASY

300457 Kit, Major Repair A1117WT (Stk Code A)
324460 Kit, Gasket/Diaphragm B1106WT (Stk Code A)
322363 Kit, Choke Lever 40-999 (Stk Code A)

A - 323602-03 Carburetor, Zama C1U M29D 1
1 -- -- . Ring, Screen Retainer 1
2 -- -- . Collar 1
3 -- -- . Lever, Throttle 1
4 -- -- . Cover, Metering Lever 1
5 B 300456 . Cover, Fuel Pump 1
6 -- -- . Shaft Asy, Throttle 1
7 -- -- . Valve, Throttle 1
8 -- -- . Shaft Asy, Choke 1
9 -- -- . Valve, Choke 1

10 -- -- . Valve, Inlet Needle 1
11 -- -- . Plug, Welch 1
12 -- -- . Ball, Choke Friction 1
13 -- -- . Gasket, Metering Diaphragm 1
14 -- -- . Gasket, Fuel Pump 1
15 -- -- . Diaphragm, Fuel Pump 1
16 -- -- . Diaphragm Asy, Metering 1
17 -- -- . Screw, Valve 1
18 -- -- . Screw, Valve 1
19 -- -- . Screw, Metering Lever Pin 1
20 -- -- . Screw, Pump Cover 2
21 -- -- . Screw, Idle Adjust Kit 1
22 -- -- . Screw, Metering Cover 2
23 -- -- . Spring, Choke Friction 1
24 -- -- . Spring Needle 2
25 -- -- . Spring, Throttle Return 1
26 -- -- . Spring, Metering Lever 1
27 -- -- . Needle, High Speed 1
28 -- -- . Needle, Low Speed 1
29 -- -- . Screen, Check Valve 1
30 -- -- . Screen, Fuel Inlet 1
31 -- -- . Pin, Metering Lever 1
32 -- -- . Lever, Metering 1
33 -- -- . Nozzle Asy, Check Valve 1
34 -- -- . Screw, Throttle Lever 1
35 B 323603 . Cap, Limiter, High, Black 1
36 B 323604 . Cap, Limiter, Low, White 1

ITEM STK

PART UNITS

NO. CODE NUMBER DESCRIPTION PER ASY

300454 Kit, Major Repair RB-48 (Stk Code B)
300473 Kit, Gasket/Diaphragm GND-13 (Stk Code A)
322358 Kit, Choke Lever 40-999 (Stk Code A)

21

5

16

17

32

2

3

8

7

19

6

9

19

24

11

14

31
1

10

33

20

15

18

36

13

25

30

38

37

29

26

35

12

34

28

4

23

20

5

21

14

15

7

17

6

30

2

3

34

8

9

18

12

23

10
26
32

31

19

13
16
4

22

11

1

29

33

24

27

35

36

28

24

25

22

22

27

3

1 A 224044 Spring, Muffler 1
2 B -224034 Kit, Muffler 1
3 B 111072 . Screw, 8-18 x .31 Pn Dh Sl Torx 1
4 A 224228 Gasket, Muffler 1
5 A 224922 Gasket, Exhaust Port 1
6 A -302424 Kit, Spark Arrester 1
7 A 224040 . Screen, Spark Arrester 1
8 A 322032 . Cover, Spark Arrester

1

9 A 111055 Screw, 10-24 x .625, Plast 2
10 A 224236 Cover, Air Cleaner, Large (Black) 1
11 A 224237 Cover, Air Cleaner

, Small (Black) 1
12 A 224239 Filter, Air 1
13 A 111058 Nut, 10-24 Hex, Flange 2
14 A 224238 Box, Air (Blk) 1
15 A 224242-02 Primer, Remote 1
16 A 225163 Hose, Fuel Return 1
17 - FIGURE 3 Carburetor w/Choke

1
18 A 218933 Gasket, Carburetor 1
19 A -224041-02 Insulator, Carburetor 1
20 A 111053 Screw, 10-24 x .88 Thd Form 2
21 B 111057 Screw, 10-24 Spl 2
22 A 322031 Gasket, Manifold 1
23 A 302349 Tank, Fuel (Natural) 1
24 A -216985 . Filter, Fuel 1
25 A 225162 . Hose, Fuel 1
26 A 225163 . Hose, Fuel Return 1
27 A -223508 . Cap, Fuel, w/Retainer 1
28 A 322105 Isolator, Fuel Tank 4
29 A 301114 Kit, Spacer, Clutch 1
30 C 322847 . Nut, Hex, 7/16-20 1
31 B 322844 . Washer, Shaft 1
32 A -301352-01 Kit, Flywheel, 28/32 1
33 B 550001 Kit, Pawls/Flywheel 1
34 - -- -- . Pawl, Starter 2
35 - -- -- . Spring, Starter Pawl 2
36 - -- -- . Ring, Retainer 2
37 B 111085 . Nut, Direct Drive 1
38 C 322847 . Nut, 7/16-20, Clutch Drive 1
39 A 102164 Key, Flywheel 1
40 A 111053 Screw, 10-24 x .88 Thd Form 2
41 B 300321 Terminal Tab 1
42 A 302138 Ignition Asy 1
43 A 223884 . Kit, Spark Plug Wire 1
44 A 102556 .. Connector, Spark 1
45 A 95266 .. Boot, Spark Plug 1
46 B 215533-01 .. Grommet, H/T Lead, Split 1
47 B 110995 .. Grommet, S/Plug Wire 1
48 B 111067 Screw, 10-24x.63 SlTorTp 3
49 B 224042 Shroud, Engine 1

*50 B 224701 Short Block Asy, Direct Drive 1

- -- -- . C’case Asy 1

- -- -- . C’case, Machined 1

- -- -- .. Bearing 6202 1

- -- -- .. Bearing 6202RS 1

- -- -- .. Seal 1

- -- -- .. Spacer 1

- -- -- .. O-ring 1

*50 B -224703 Short Block Asy, Clutch Drive 1

- -- -- . C’shaft Asy 1

- -- -- . C’case, Machined 1

- -- -- .. Bearing 6202 1

- -- -- .. Bearing 6202RS 1

- -- -- .. Seal 1

- -- -- .. Spacer 1

- -- -- .. O Ring 1

51 - -- -- Rod, Connecting Asy 1

FIGURE 1

POWERHEAD ASSEMBLY

52 - -- -- . Bearing 2

*53 - -- -- Piston, 28cc Aluminum

1
54 - -- -- . Pin, C’shaft Piston 1
55 - -- -- . Ring, Retaining 1
56 - -- -- . Ring, Piston, 35mm 1

*53 - -- -- Piston, 32cc Aluminum 1

54 - -- -- . Pin, C’shaft Piston 1
55 - -- -- . Ring, Retaining 1
56 - -- -- . Ring, Piston 1
57 A 111065 Screw, 10-24 x .688 Tri Rnd 4
58 A 322030 Shield Muffler 1

*59 A 300452 Cylinder/Gasket, 28cc Chrome 1

60 A 224022 . Gasket, Cylinder 1

*59 A 300453 Cylinder/Gasket, 32cc Chrome

1
60 A 224022 . Gasket, Cylinder 1
61 B 224235 Cover, Cylinder/Muffler (Black) 1
62 B 322210 Washer

, Plastic 1
63 B 111067 Screw, 10-24 x .63 Sl Torx Tp 2
64 B 111068 Screw, 10-14 x 1.38 Taptite 1
65 A 93469 Washer, .469OD/.222ID 1
66 A 92879 Spark Plug, RDJ8J 1
67 A 224023 Gasket, C’case 1
68 A -224024-01 Plug, C’case 1
69 C -322437-90 Plate, C’case, Coated Finish 1
70 A 111065 Screw, 10-24 x .688 Tri Rnd 5
71 - -- -- Label, Choke (Vertical) 1
72 - -- -- Label, Staring Inst (Eng) for

models with slide to stop switch 1

73 - FIGURE 2 Starter/Clutch Housing Asy 1

Direct Drive Models Only (refer to chart on page 1)
Clutch Drive Models Only (refer to chart on page 1)
28cc Models Only (refer to chart on page 1)
32cc Models Only (refer to chart on page 1)
Not Used On These Models

ITEM STK

PART UNITS

NO. CODE NUMBER DESCRIPTION PER ASY

ITEM STK

PART UNITS

NO.

CODE NUMBER DESCRIPTION PER ASY

Represents a
large black air
box
MT3311
22400128-03
22400128-06
22400128-11
22400128-17
22400128-18
12400128-20
12400128-25
12400128-49
12400128-50
22400128-58
12400128-59
12400128-61
12400128-74
12400128-75
12400128-83
12400132-01
12400132-44
22400132-93

Represents a
small black air
box
MT3310
22400128-01
22400128-02
12400128-05
12400128-10
22400128-19
12400128-21
12400128-27
12400128-28
12400128-30
12400128-47
12400128-48
22400128-51
12400128-52
12400128-58
12400128-73
12400128-85
22400128-93
22400128-94
22400128-96
22400128-97
90002815-00
90002815-25
90002816-00
90002817-00
90002818-00

Represents a
terminal tab
MT3311
22400128-02
22400128-06
12400128-10
22400128-11
22400128-18
12400128-20
12400128-25
12400128-28
12400128-30
12400128-48
12400128-49
12400128-50
12400128-52
12400128-58
12400128-59
12400128-61
12400128-74
12400128-83
22400128-94
12400132-44
22400132-86
22400132-93
90002818-00

Represents a
large green
air box
22400132-86