yard-man YM400 PARTS LIST
Issued 9/02
Item Part No. Description
1 791-182059 Air Cleaner/Muffler Cover Assembly
(includes 2 & 37)
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)
8 753-04144 Carburetor Assembly (includes 9)
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)
13 791-684451 Reed Assembly
14 753-1208 Carburetor Mount Gasket
15 753-04272 Crank Case Service Assembly
(includes 10 & 22)
16 791-612134 Rear Mounting Pad
17 753-1186 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
22 791-153520 Shroud Assembly
23 791-181861 Shroud Screw
24 791-182064 Shroud Extension and Stand
25 791-181867 Flywheel Assembly
26 791-610303 Spacer
27 753-04232 Recoil Pulley Assembly
28 791-613102 Recoil Spring
29 791-611061 Rope Guide
30 791-181441 Pulley Retainer Assembly
31 791-182618 Switch Assembly (includes 40)
32 791-181079 Pull Handle
Item Part No. Description
33 791-613103 Rope
34 753-04293 Starter Housing Assembly
(includes 27-33 & 40)
35 791-181862 Housing Screw
36 791-182797 Clutch Cover Assembly (includes 37-39)
37 791-181501 Cover Screws
38 791-182519 Anti-Rotation Screw
39 791-181345 Clamping Screw
40 791-180036 Wire Lead
41 753-04125 Module Assembly
42 791-610311 Spark Plug
43 791-182066 Muffler Assembly (includes 44-46)
44 753-1206 Spark Arrestor Screen
45 753-04159 Exhaust Gasket
46 791-147575 Muffler Mounting Bolt Assembly
47 753-1206 Cylinder Assembly (includes 49)
48 753-1207 Piston and Rod Assembly
49 753-1197 Cylinder Gasket
50 791-182723 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
* 753-04173 Short Block Assembly
(includes 10, 15, 23, 42, 46-50)
* 791-181501 Starter Housing Screw Set
* 791-610309 Crankcase Seal
* Items Not Shown
37
1
2
3
8
10
12
3
4
5
7
6
11
13
14
15
48
49
21
50
19
16
17
18
20
38
39
37
36
25
26
27
28
31
29
32
33
31
35
37
34
24
31
40
41
47
42
45
43
46
41
23
30
22
9
ENGINE PARTS - MODEL YM400
2-CYCLE GAS TRIMMER
PPN 41ADY40G401
37
Issued 9/02
10
9
8
13
17
16
11
12
14
19
18
1
1
5
6
7
4
3
2
Item Part No. Description
1 753-04294 Throttle Housing & Trigger Assembly
(includes 2 & 3)
2 791-610314 Throttle Trigger Spring
3 753-04295 Throttle Trigger
4 791-182068 Throttle Cable Assembly
5 791-153064 D-Handle Assembly (includes 6)
6 791-153317 D-Handle Hardware
7 753-04276 Drive Shaft Housing Assembly
8 791-182839 Flexible Drive Shaft
9 791-153597 Lower Clamp Assembly
10 791-180531 Shield Mounting Screw
11 791-181784 Bushing Housing Assembly
12 791-145569 Anti-Rotation Screw
13 791-181659 Shield and Blade Assembly (includes 14)
14 791-181823 Blade Assembly
15 791-153619 Outer Spool w/ Retainer (includes 16)
16 791-610660 Retainer
17 791-610317 Spring
18 791-610318 Inner Reel
19 791-153066 Bump Head Knob Assembly
Optional Accessories
* 791-610375 Replacement Line, 0.80 Diameter
* 791-153577 Reel & Line Assembly
* 791-180897 Bump Head Assembly (includes 15-19)
* 791-682075 Shoulder Strap
* Items Not Shown
BOOM AND TRIMMER PARTS - MODEL YM400
2-CYCLE GAS TRIMMER
PPN 41ADY40G401
15
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