MTD TB21 EC Parts Manual
Item Part No. Description
19 791-181930 Tank Screw
20 753-05057 Fuel Cap
21 791-182366 U-Shaped Nut
22 753-05877 Lead Wires
23 753-06251 Throttle Cable
24 753-05420 Module Assembly
25 753-06252 Cylinder Gasket
26 753-05703 Cylinder Bolt
27 753-06193 Spark Plug
28 753-06189 Insulator Assembly (includes 28 & 29)
29 753-06184 Insulator O-Ring
30 753-06185 Carburetor O-Ring
31 753-06190 Carburetor
32 753-06253 Carburetor Gasket
33 753-06191 Aircleaner Assembly (includes 34)
34 753-06085 Aircleaner Filter
* 753-06254 Short Block Assembly
(includes Crankcase, Cylinder, Piston, 8-10 & 24-27)
* Items Not Shown
3
1
4
26
27
30
31
29
12
32
20
19
17
14
13
34
18
25
8
Item Part No. Description
1 753-06243 Rear Cover Assembly (includes 2)
2 791-181862 Starter Screw
3 753-06244 Starter Assembly Guard (includes 2)
4 753-06245 Rear Engine Cover (includes 5)
5 791-181345 Cover Screw
6 753-06104 Adapter
7 753-06091 Pawl Assembly
8 753-06246 Flywheel Assembly
9 753-06247 Washer
10 753-06248 Spacer
11 753-05860 Clutch Assembly
12 753-06249 Clutch Cover Assembly (includes 2, 13-15 & 21)
13 791-182519 Anti-Rotation Screw
14 753-04003 Clamp Screw
15 791-180217 Clamp Nut
16 753-06182 Muffler Assembly
17 753-04619 Muffler Gasket
18 753-06250 Fuel Tank Assembly (includes 19 & 20)
23
7
15
24
16
9
21
2
2
6
11
28
33
REPLACEMENT PARTS - MODEL TB21 EC
2-CYCLE GAS TRIMMER
PPN 41ADT21C966
PARTS LIST PART NO. 769-05256 P00 10/09
5
10
22
Item Part No. Description
1 753-04234 Throttle Housing Assembly (includes 2-4)
2 791-182405 Switch
3 753-04119 Throttle Trigger
4 791-182690 Throttle Trigger Spring
5 753-04344 Upper Shaft Housing Assembly
6 753-05461 D-Handle (includes 6)
7 791-181587 D-Handle Hardware Assembly
8 753-1190 Split Boom Coupler (includes 9-12)
9 791-182057 Anti-Rotation Screw
10 791-181617 Bolt
11 791-181951 Adjustment Knob
12 753-04386 Knob Retainer Nut
13 753-04508 Lower Shaft Housing Assembly
14 753-04282 Shield Mounting Hardware
15 753-04283 Shield Assembly (includes 16)
16 791-180553 Blade Assembly
17 753-04284 Outer Spool Assembly (includes 18)
18 791-610660 Retainer
19 791-610317B Spring
20 753-1155 Inner Reel
21 791-153066B Bump Head Knob Assembly
* 753-1156 Reel & Line Assembly
* 753-05778 Fixed Line Insert
* 791-180920 .095 Replacement Line
* Items Not Shown
1
1
4
2
13
7
7
15
14
16
17
19
20
21
3
6
14
REPLACEMENT PARTS - MODEL TB21 EC
2-CYCLE GAS TRIMMER
PPN 41ADT21C966
Issued 10/09
5
16
18
9
10
11
12
8
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