
ROTARY LAWN MOWER - - MODEL NUMBER PR7Y21CHB
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ROTARY LAWN MOWER - - MODEL NUMBER PR7Y21CHB
KEY PART
NO. NO. DESCRIPTION
1 183496X479 Upper Handle
2 151721X479 Lower Handle
3 146771 Control Bar
4 133107 Engine Zone Control Cable
5 191574 Handle Bolt
6 189713X428 Handle Knob
7 51793 Hairpin Cotter
8 66426 Wire Tie
9 180479 Kit, Rear Door (Includes Key Numbers 16 and 17)
10 128415 Pop Rivet
11 175069X479 Support Bracket, LH
12 175070X479 Support Bracket, RH
13 17060410 Screw 1/4-20 x 5/8
14 175576X479 Handle Bracket Assembly, LH
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15 175577X479 Handle Bracket Assembly, RH
16 180071 Spring, Rear Door, LH
17 180072 Spring, Rear Door, RH
18 132004 Keps Locknut 1/4-20
19 179585 Rope Guide
20 189005 Rear Skirt
21 88652 Hinge Screw 1/4-20 x 1-1/4
24 - - - Engine, Briggs & Stratton, Model Number 12H602
(For engine service and replacement parts,
call Briggs & Stratton at 1-800-233-3723)
25 150406 Screw, Hex Head, Threaded, Rolled 3/8-16 x 1-1/8
26 83923 Nut, Hex, Flangelock 3/8-16
27 181383 Wheel & Tire Assembly, Rear, 14"
28 160828 Bolt, Shoulder 5/16-18
30 180411X004 Axle Arm Assembly, Rear, RH
31 175478 Selector Knob
32 175053X004 Selector Spring
33 73800500 Nut, Hex, Nylock 5/16-18
34 180412X004 Axle Arm Assembly, Rear, LH
KEY PART
NO. NO. DESCRIPTION
36 184193 Bolt, Rear Door
37 150078 Thread Cutting Screw w/Sems 5/16-18 x 3/4
38 183901 Spacer
40 188839X004 Mounting Bracket, Debris Shield
41 192325 Screw, Debris Shield
43 188784 Debris Shield
44 176710 Kit, Housing (Includes Key Numbers 10, 11, 12 and 45)
45 107339X Danger Decal
46 189179 Blade Adapter / Pulley
47 189028 Blade, 21"
48 851074 Hardened Washer
49 850263 Helical Washer 3/8
50 851084 Hex Head Machine Screw 3/8-24 x 1-3/8 Grade 8
51 111190X Clamp, Cable
52 83816 Screw, Cable Clamp
53 183365 Screw, Hex Head 1/4-20 x 2-11/64
54 174221 Throttle Control
59 175071 Discharge Defl ector
60 175735 Hinge Bracket Assembly
61 175285 Spring
62 175650 Rod, Hinge
63 73800400 Locknut, Hex 1/4-20
64 175066 Mulcher Door
65 188152 O-Ring
66 88348 Washer, Flat 3/8
67 193498 Kit, Bushing, High Wheel
68 193028X428 Bushing, Nylon, Black
- - 162300 Warning Decal (not shown)
- - 172787 Operator’s Manual, English
- - 172788 Operator’s Manual, French
- - 192369 Repair Parts Manual, English / French
NOTE: All component dimensions given in U.S. inches.
1 inch = 25.4 mm

ROTARY LAWN MOWER - - MODEL NUMBER PR7Y21CHB
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ROTARY LAWN MOWER - - MODEL NUMBER PR7Y21CHB
KEY PART
NO. NO. DESCRIPTION
1 184587 Control Cable Assembly
2 167387 Bearing, Wheel Adjuster
3 175262 Pan Head Tapping Screw #10-24 x 2-3/4
4 158755 Hex Washer Head Screw 1/4-20 x 2.12
5 175436 V-Belt
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6 150495 Spring Retainer
7 191730 Nut, Hex, Flanged 1/4-20
8 77400 Hubcap
9 145212 Locknut
11 180766 Wheel & Tire Assembly
12 12000058 E-Ring
13 137054 Pinion
14 189403 Dust Cover
16 67725 Washer 1/2
18 170143 Selector Knob
KEY PART
NO. NO. DESCRIPTION
28 180329 Drive Cover
31 132010 Nut, Hex, Flanged
32 189407 Drive Pulley
35 172291 Kit, Wheel Adjuster, LH
(Includes Knob and Bearing)
36 180184 Gear Case Assembly (See Breakdown)
38 73800400 Locknut 1/4-20
40 137090 Spring
41 172290 Kit, Wheel Adjuster, RH
(Includes Knob and Bearing)
54 188985 Grassbag Assembly
55 175739 Driveshaft Cover
57 188815 Frame, Grassbag
NOTE: All component dimensions given in U.S. inches.
1 inch = 25.4 mm

ROTARY LAWN MOWER - - MODEL NUMBER PR7Y21CHB
GEARCASE ASSEMBLY - - PART NUMBER 180184
TONDEUSE À GAZON ROTATIVE - - NUMÉRO DE MODÈLE PR7Y21CHB
ENSEMBLE DE LA BOÎTE DE VITESSE - NUMÉRO DE PIÈCE 180184
KEY PART
NO. NO. DESCRIPTION DESCRIPTION
1 183497 Case, Lower Boîte, Inférieur
2 183498 Case, Upper Boîte, Supérieur
3 183499 Gear, 27 Teeth Engrenage, 27 Dents
4 183500 Lever, Clutch Levier d’embrayage
5 183501 Spring, Return Ressort de Rappel
6 183502 Shaft, Input Arbre d’entrée
7 183503 Dog, Movable Griffe, Amovible
8 183504 Dog, Fixed Griffe, Fixe
9 183505 Wire, Formed Fil à Pince
10 183506 Bearing, Ball Palier
11 183507 Fork, Shift Fourchette de Changement de Vitesse
12 183508 Seal, Output Shaft Sceau, Arbre de Sortie
13 183509 Washer Rondelle
14 183510 Seal, Case Sceau, Boîte
15 183511 Bushing Douille
16 183512 Shaft, Output Arbre de Sortie
17 183513 Screw Vis
18 183514 Seal, Input Shaft Sceau, Arbre d’entrée
- - 183404 Kit, Gearcase Replacement Jeu, Remplacer, Boîte de Vitesse
(Includes Instructions) (Y compris le instructions)
NOTE: Use Dow Corning #709 REMARQUE: Utilizer Dow Corning #709
to reseal Gear Case Halves. pour Sceau les Boîtes.
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