Illustrated Parts Manual
P/N 27731
Rev 000
Model Number:
TBC-4001
20cc Curved Shaft Grass Trimmer
Date 8/2/99
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PARTS INFORMATION
TBC-4001
CYLINDER, PISTON, CRANKSHAFT • FIGURE 1
ITEM PART NUMBER
DESCRIPTION
QTY
1
1
1
2
COMMENTS
1
2
3
4
6
7
8
9
157-01570-900 CAP,SPARK PLUG,ASS'Y
018-11660-21
001-00045-90
994-16050-221 SCREW,5X22/WS
017-00025-200 GASKET,CYLINDER
PLUG,SPARK
SET,CYLINDER
Includes cylinder gasket
1
041-00000-21
030-00045-90
039-06100-200 CIRCLIP,PISTON PIN
RING,PISTON
SET,PISTON
1
1
2
Includes ring and circlips
10 037-06097-20
12 046-00025-80
PIN,PISTON
CRANKSHAFT
1
1
13 061-00025-800 ROD,CONNECTING
21 077-00025-21 CRANKCASE
1
1
23 999-66152-511 SEAL,OIL,#VE15X25X7
24 999-61600-200 BEARING,BALL,#6002
30 994-16040-201 SCREW,4x20 WS
1
1
2
31 155-21522-91
ROTOR,MAGNETO
1
Includes pawl and pawl spring
32 790-00025-200 SPRING,PAWL
33 788-00025-200 PAWL,STARTER
37 992-01120-011 WASHER,12
38 991-11120-011 NUT,12
1
1
1
1
50 178-00024-80
52 167-21533-80
CORD
COIL,IGNITION ASSY
1
1
Page 2
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PARTS INFORMATION
TBC-4001
STARTER, FUEL SYSTEM, MUFFLER • FIGURE 2
Page 3
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PARTS INFORMATION
TBC-4001
STARTER, FUEL SYSTEM, MUFFLER • FIGURE 2
ITEM PART NUMBER
DESCRIPTION
MUFFLER PROTECTOR
994-15050-161 SCREW,5X16/PS
CASE,FAN
QTY
1
3
1
1
1
1
1
2
2
1
1
1
3
1
1
1
1
2
2
1
1
1
1
2
1
2
1
1
1
1
1
2
2
1
2
COMMENTS
3
7
752-00025-22
11 112-00025-80
12 999-61600-001 BEARING,BALL,#6000ZZ
14 277-0635M-800 CLUTCH,ASS'Y
15 779-0136U-200 SPRING,RECOIL
16 774-00025-200 PULLEY,STARTER
17 771-00025-200 STAY,PULLEY
18 839-00025-200 SCREW,SET
21 783-06097-200 ROPE,STARTER
22 785-06410-200 HANDLE,STARTER
24 179-00025-800 CORD,STOP
25 994-16050-202 SCREW,5X20/WS
28 999-67048-012 O-RING,S-48
30 732-00025-200 SPARK ARRESTER SCREEN
31 739-00025-20
GASKET,MUFFLER
32 717-00025-801 MUFFLER COVER
36 994-60050-104 BOLT,HEX 5x10W
37 990-51040-083 BOLT,HEX.HOLE 4X8
40 403-0631A20
41 404-0099F-90
42 402-0602K-21
43 455-0003T-90
47 994-16050-221 SCREW,5X22/WS
49 999-67015-000 O-RING,P15
55 994-16050-601 SCREW,5x60WS
59 223-06500-90
60 680-00731-201 CLIP 6.3
61 675-04042-80
62 591-00025-22
63 595-0650A-90
GASKET, INLET MANIFOLD
INSULATOR,CARBURETOR
GASKET,CARBURETOR
CARBURETOR
PIPE,FUEL,ASS'Y
FILTER,FUEL
TANK
TANK CAP
64 659-00801-200 COLLAR
67 994-63050-185 BOLT,HEX 5X18PS
73 700-15007-01
75 655-06400-200 CUSHION,TANK
PIPE,RUBBER
Page 4
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PARTS INFORMATION
TBC-4001
AIR CLEANER • FIGURE 3
ITEM PART NUMBER
DESCRIPTION
410-00025-900 CLEANER,AIR ASS’Y
424-00025-200 CAP,AIR CLEANER
QTY
COMMENTS
0
1
2
3
4
1
1
1
2
1
446-00025-200 ELEMENT,CLEANER
470-00025-200 COLLAR
423-00025-800 BODY,CLEANER,AIR
Page 5
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PARTS INFORMATION
TBC-4001
CARBURETOR • FIGURE 4
ITEM PART NUMBER
DESCRIPTION
QTY
1
2
1
1
COMMENTS
*Contained in Carb Repair Kit
P/N 650-25140-900
(Not available individually)
0
1
5
7
455-0003T-90
548-25140-200 SCREW,THROTTLE SET
539-25120-200 SWIVEL
CARBURETOR
489-25100-200 RING,STOP
10 550-25100-200 O-RING
1
11 599-2000W-38 JET,MAIN # 38
1
13
14
17
~
~
~
*GASKET, PUMP
*DIAPHRAGM, PUMP
*SCREEN, INLET
1
1
1
18 575-25152-80
BODY,PUMP
1
19
20
~
~
*GASKET, DIAPHRAGM .78mm
*DIAPHRAGM, METERING
1
1
21 476-25004-200 COVER,DIAPHRAGM
22 548-25101-200 SCREW,SET
1
4
Page 6
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PARTS INFORMATION
TBC-4001
FAN CASE, CLUTCH DRUM • FIGURE 5
ITEM PART NUMBER
DESCRIPTION
QTY
1
1
1
4
COMMENTS
1
2
4
5
6
8
289-00025-80
999-61620-101 BEARING,BALL #6201ZZ
331-00025-21 CASE,CLUTCH
990-73050-184 SCREW,TAPPING,5X18
599-0635A-200 CUSHION
DRUM,CLUTCH
1
1
994-61050-254 BOLT,HEX HOLE,5X25S
10 249-0630G-201 SPACER
1
11 380-0635D-200 BOLT,SPECIAL
1
Page 7
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PARTS INFORMATION
THROTTLE LEVER, HANDLE, DRIVE SHAFT, SAFETY GUARD • FIGURE 6
TBC-4001
Page 8
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PARTS INFORMATION
THROTTLE LEVER, HANDLE, DRIVE SHAFT, SAFETY GUARD • FIGURE 6
TBC-4001
ITEM PART NUMBER
DESCRIPTION
PIPE,DRIVE SHAFT SET
CASE,GEAR,ASS'Y
PIPE,DRIVE SHAFT
QTY
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
2
2
2
1
2
1
2
2
1
2
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
COMMENTS
1
2
3
4
5
6
7
8
9
343-37718-00
300-37710-90
341-37715-20
350-37651-210 LINER,FLEXIBLE
344-37651-21
304-37651-21
999-61608-004 BEARING,BALL,608DD
348-37651-20 COLLAR
990-11050-081 SCREW,5X8
CASE,GEAR
SHAFT,FLEXIBLE
SHAFT,CUTTER
10 300-37710-20
11 994-25050-301 BOLT,PS,5X30
12 315-37710-200 NUT,SPECIAL
14 310-37710-20
16 885-00025-800 WIRE,THROTTLE
18 992-01080-011 WASHER,8
19 991-01080-011 NUT,8
20 441-37701-810 COVER,SAFETY
21 442-37710-200 BRACKET,SAFETY GUARD
22 992-10060-012 WASHER,S,6
23 990-23060-161 BOLT,6X16 PLUS
26 500-37704-20
27 991-01060-011 NUT,6
HOLDER,CUTTER
HANDLE
28 506-37704-200 BRACKET,HANDLE A
29 992-01060-011 WASHER,6
31 990-23060-401 BOLT,P,6X40
50 504-37400-200 GRIP,SHAFT
51 178-37300-801 CORD,STOP 230mm
52 164-10014-010 TUBE,PROTECTION
55 870-37400-900 LEVER,THROTTLE ASS'Y
56 162-37101-200 SWITCH,STOP
57 993-42030-081 SCREW, TAPPING, 3X8
58 259-37101-200 BASE,STOP SWITCH
59 262-37101-200 SPRING,STOP SWITCH
60 177-37101-200 TERMINAL,EARTH B
61 176-37101-200 TERMINAL,EARTH A
62 991-86050-000 NUT,LOCK,5
63 993-55060-001 RING,STOP,6
64 832-37101-200 SPRING,RETURN
65 880-37101-200 LEVER,THROTTLE
66 994-31050-251 SCREW,S.,5X25
67 853-37101-200 SHAFT,LOCK BUTTON
68 958-37101-200 SPRING,LOCK,BUTTON
69 956-37101-200 BUTTON,LOCK
73 320-37651-200 SPACER
Page 9
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PARTS INFORMATION
TBC-4001
TOOLS, NYLON HEAD • FIGURE 7
ITEM PART NUMBER
DESCRIPTION
BRAIN TH-97RB CUR SHT
CUTTING BODY ASSY
EYELET
BASE,ADJUSTMENT
SPRING,REEL,BLUE
WASHER,ADJUSTMENT
REEL
REEL,TH-97B/RB
BALL,STEEL
QTY
1
1
1
1
1
1
1
1
COMMENTS
0
1
2
4
5
6
7
7
8
9
783-33822-90
786-33810-91
788-33071-20
785-33810-20
793-33820-20
792-33810-20
787-33810-20
787-33821-20
673-35600-20
790-33810-20
3
1
SLIDER,REEL
10 789-33810-20
12 315-33822-80
CAP,BODY
NUT, MOUNTING
1
1
30 813-20000-200 WRENCH,HEX,4
1
31 829-20000-80
SPANNER,COMBI,13X19
1
35 948-39907-200 BAG,TOOL
1
Page 10
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PARTS INFORMATION
TBC-4001
DECALS • FIGURE 8
ITEM PART NUMBER
DESCRIPTION
DECAL,TBC-4001
DECAL,CAUTION
QTY
COMMENTS
1
2
3
4
906-0004C-20
919-37286-20
915-05015-200 DECAL,SYMBOL
923-37400-200 DECAL,LEVEL
1
1
1
1
1
10 920-32466-20
DECAL,CAUTION
Page 11
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TECHNICAL SERVICE
BULLETIN NUMBER PI 3109
Date:
September 2000
Model & Serial:
AST-210, TBC-2211 (1)
TBC-4001, TBC-2251 (2)
Reason:
Some units experienced difficulty in properly feeding line. The spring within the
head has been changed to ensure proper feeding.
Part Number Changes:
Old Part #
783-33815-90
793-33810-21
783-33822-90
793-33820-20
New Part #
Description
Brain Head (1)
Spring (1)
Brain Head (2)
Spring (2)
Remarks
783-33817-90
793-33810-22
783-33823-90
793-33820-21
Marking on body changed from NB to NBY
Color has been changed from black to black & yellow
Marking on body changed from RB to RYB
Color has been changed from silver to silver & yellow
is marketed exclusively by:
ISM, Inc. • 1028 – 4th Street, Suite B • Auburn, WA 98001 • Phone: (253) 333-1200 • Fax: (253) 333-1212
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