Troy-Bilt TB490BC Parts List page 3

1
Item Part No. Description
1 791-00040 Throttle Housing and Trigger
Assembly (includes 2-4)
2 791-00041 Throttle Trigger Lock-Out
3 791-00042 Throttle Trigger
4 791-182690 Throttle Trigger Spring
5 791-182673 Switch Assembly
6 791-610327 Harness Clip
7 753-1247 Upper Drive Shaft Housing Assembly
8 791-181099 J-Handle Assembly (includes 9 & 10)
9 791-612831 Grip
10 791-612021 Tube Closure
11 791-683295 Handle Bracket Assembly (includes 12-17)
12 791-181811 Screw
13 791-181812 Upper Handle Clamp
14 791-181813 Middle Handle Clamp
15 791-181814 Lower Handle Clamp
16 791-181815 Nut
17 791-145569 Anti-Rotation Screw
18 753-1190 Click-Link Coupler (includes 18-22)
19 791-182057 Screw
20 791-181617 Bolt
21 791-181981 Adjustment Knob
22 791-181886 Knob Retaining Nut
23 791-182541 Lower Drive Shaft Housing Assembly
24 791-613300 Lower Flexible Drive Shaft
25 791-182200 Shield Mount Screw Assembly
26 791-182193 2 piece Gearbox Assembly
(includes 25, 27 & 28)
27 791-182195 Gearbox Screw
28 791-145569 Anti-Rotation Screw
29 791-147492 Blade Shield/Shield Mount
30 791-182196 Blade Driver
31 791-683304 Shield Mounting Screw
32 753-1191 Shield and Blade Assembly (includes 33)
33 791-682061 Blade Assembly
34 791-147490 Retaining Washer
35 791-612483 Spool Shaft
36 791-683301 Outer Spool and
Eyelet Assembly
37 791-612026 Retainer
38 791-610636B Spring
39 791-147495 Inner Reel
40 791-180814B Bump Head Knob Assembly
41 791-145873B 4-Tooth Blade
42 791-181699 Nut
* 791-180014B Blade Retaining Kit
(includes 34 & 42)
* 791-613226 Locking Rod Tool
* 791-682075B πShoulder Harness
BOOM AND TRIMMER PARTS - MODEL TB490BC
5
6
4
3
2
14
7
15
16
17
2 Piece Gearbox Assembly Parts – Item 26
43
44
45
46
47
48
49
Optional Accessories
*
*
*
*
4-CYCLE GAS TRIMMER
(ppn - 41ADT49C063) (Serial Number 011...... and greater)
1
9
10
8
12
13
11
19
22
31
33
32
33
41
34
42
791-182191 Left Housing
791-182192 Right Housing
791-182194 Pinion Gear Assembly
791-182199 Output Shaft Bushing
791-182198 Output Shaft Gear
791-182197 Output Shaft Assembly
(includes 46 & 47)
753-1159 O-Ring
753-1160 Reel and Line Assembly
753-1161 Bump Head Assembly
(includes 35-40)
753-1249 4-Cycle Oil
Items Not Shown
46
45
27
28
44
49
20
21
26
18
23
25
24
27
26
28
30
34
35
37
38
Reissued 12/01
47
27
43
48
30
29
27
36
39
40