Issued 12/02
Item Part No. Description
1 791-182059 Air Cleaner/Muffler Cover Assembly
(includes 2 & 36)
2 791-180350 Air Cleaner Filter
3 791-180351 Carburetor Mounting Screw Assembly
4 791-180226 Wavey Washer
5 753-1182 Choke Lever Assembly (includes 6)
6 753-1183 Choke Knob and Screw
7 753-1184 Choke Lever and Plate (includes 5)
8 753-04320 Carburetor Assembly (includes 9 & 20)
9 791-610675 Carburetor Gasket
10 791-181860 Carb Mount Screw
11 753-1185 Primer and Hose Assembly
12 753-1196 Carb Mount Assembly (includes 10 & 13)
13 791-684451 Reed Assembly
14 753-1208 Carburetor Mount Gasket
15 753-04321 Crank Case Service Assembly
(includes 10)
16 791-612134 Rear Mounting Pad
17 753-04311 Fuel Tank Assembly (includes 18-20)
18 753-1187 Fuel Cap Assembly
19 791-181168 Fuel Return Line
20 791-682039 Fuel Line Assembly
21 791-145308 Front Mounting Pad
22 791-182064 Shroud Extension and Stand
23 791-181867 Flywheel Assembly
24 791-610303 Spacer
25 753-04232 Recoil Pulley Assembly
26 791-613102 Recoil Spring
27 791-611061 Rope Guide
28 791-181441 Pulley Retainer Assembly
29 791-182618 Switch Assembly (includes 37)
30 791-181079 Pull Handle
Item Part No. Description
31 791-613103 Rope
32 753-04293 Starter Housing Assembly
(includes 25-33)
33 791-181862 Housing Screw
34 791-182797 Clutch Cover Assembly (includes 35 & 36)
35 791-182519 Anti-Rotation Screw
36 791-181345 Clamping Screw
37 791-180036 Wire Lead
38 753-04324 Module Assembly
39 791-610311 Spark Plug
40 791-182066 Muffler Assembly (includes 41-43)
41 791-182747 Spark Arrestor Screen
42 753-04159 Exhaust Gasket
43 791-147575 Muffler Mounting Bolt Assembly
44 753-04323 Cylinder Assembly
45 753-1207 Piston and Rod Assembly
46 753-1197 Cylinder Gasket
47 791-182723 Cylinder Bolt
* 753-04134 Engine Gasket Kit
* 791-180602 O.E.M. Carburetor Repair Kit (Walbro)
* 791-181873 Gasket Diaphragm Repair Kit (Walbro)
* 753-1209 Piston Ring
* 753-04322 Short Block Assembly
(includes 10, 15, 39, 44-47)
* Items Not Shown
36
1
2
3
8
10
12
3
4
5
7
6
11
13
14
15
45
46
21
47
19
16
17
18
20
35
36
36
34
23
24
25
26
29
27
30
31
29
33
36
32
22
29
37
38
44
39
42
40
43
41
28
9
ENGINE PARTS - MODEL YM400
2-CYCLE GAS TRIMMER
PPN 41BDY40G401
36
Issued 12/02
BOOM AND TRIMMER PARTS - MODEL YM400
2-CYCLE GAS TRIMMER
PPN 41BDY40G401
Item Part No. Description
1 753-04294 Throttle Housing and Trigger Assembly
(includes 2-4)
2 791-610314 Throttle Trigger Spring
3 753-04295 Throttle Trigger
4 791-145888 Throttle Housing Screws
5 791-182068 Throttle Cable
6 753-04280 Flexible Drive Shaft
7 753-04366 Drive Shaft Housing Assembly
(includes 6 & 13)
8 791-153064 D-Handle Assembly (includes 9)
9 791-153317 D-Handle Hardware
10 753-04282 Guard Mounting Hardware
11 753-04283 Guard
12 791-180553 Blade Assembly
13 753-04284 Outer Reel w/Retainer
14 791-610317 Spring
15 791-610318 Inner Reel
16 791-153066 Bump Knob
Optional Accessories
* 791-153577 Inner Reel and Line
* 791-682075 Shoulder Strap Assembly
* Items Not Shown
1
5
6
1
4
3
2
9
9
8
7
10
12
12
11
10
14
15
16
13
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