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4
BOOM AND TRIMMER PARTS - TROY-BILT MODEL TB4000
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32
37
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26
22
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30
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36
Item Part No. Description
1 180866 Grip
2 181688 Throttle Cable Assembly
3 180975 Throttle Trigger
4 610314 Throttle Trigger Spring
5 181689 Throttle Trigger Assembly (includes 3 & 4)
6 180252 Switch Assembly
7 181690 Wire Lead Assembly
8 610327 Shoulder Harness Clamp
9 182832 J-Handle Assembly (includes 10 & 11)
10 612831 Grip
11 612021 Tube Closure
12 683295 Handle Bracket Assembly (includes 13-18)
13 181811 Screw
14 181812 Upper Handle Clamp
15 181813 Middle Handle Clamp
16 181814 Lower Handle Clamp
17 181815 Nut
18 145569 Anti-Rotation Screw
19 181691 Drive Shaft Housing Assembly
20 182833 Flexible Drive Shaft
21 182200 Shield Mount Screw Assembly
22 182193 2 piece Gearbox Assembly (includes 23-25)
23 182195 Gearbox Mounting Hardware
24 182519 Anti-Rotation Screw
25 182196 Blade Driver
26 147492 Blade Shield/Shield Mount
27 683304 Shield Mounting Screw
28 182189 Shield and Blade Assembly (includes 29)
29 682061 Blade Assembly
30 147490 Retaining Washer
31 612483 Spool Shaft
32 683301 Outer Spool and Eyelet Assembly (includes 33)
33 612026 Retainer
34 610636 Spring
35 147495 Inner Reel
36 180814 Bump Head Knob Assembly
37 49M5873L063 4-Tooth Blade
38 181699 Nut
* 613226 Locking Rod Tool
* 682075 Shoulder Harness
2
Piece Gearbox
Assembly Parts – Item 22
39 182191 Left Housing
40 182192 Right Housing
41 182194 Pinion Gear Assembly
42 182199 Output Shaft Bushing
43 182198 Output Shaft Gear
44 182197 Output Shaft Assembly
(includes 42 & 43)
Optional Accessories
* 49U1341L063 Replacement Line,
0.095 Diameter
* 49U5001L063 Reel and Line Assembly
* 41AM079G063 Brush Cutter Accessory Kit
* 147498 Bump Head Assembly
(includes 31-36)
* 180014 Blade Retaining Kit
(items 30 & 38)
* Items Not Shown