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Poulan
Gas Walk-Behind Mower

Model # PR7Y21CHA Official Poulan rotary lawn mower

Here are the diagrams and repair parts for Official Poulan PR7Y21CHA rotary lawn mower, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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Showing 10 of 103 parts  |
Lawn Mower 21-in Deck 3-in-1 Blade (replaces 532189028, 5321890-28) 189028
#47

Handle/engine/housing diagram

Lawn mower 21-in deck 3-in-1 blade (replaces 532189028, 5321890-28)

Part #189028

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$12.13 | 
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Pipe Fitting 132010
#31

Grassbag/wheels/gear case diagram

Pipe fitting

Part #132010

Replaced by #532409149

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Manufacturer substitution
This part replaces 132010. Substitute parts can look different from the original.
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$4.74 | 
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Hex Flange Lock Nut 145212
#9

Grassbag/wheels/gear case diagram

Hex flange lock nut

Part #145212

Replaced by #532409149

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Manufacturer substitution
This part replaces 145212. Substitute parts can look different from the original.
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Lock Nut 83923
#26

Handle/engine/housing diagram

Lock nut

Part #83923

Replaced by #532409149

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Manufacturer substitution
This part replaces 83923. Substitute parts can look different from the original.
BEST SELLER
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$4.74 | 
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Dust Cover 180504
#14

Grassbag/wheels/gear case diagram

Dust cover

Part #180504

Replaced by #581840401

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Manufacturer substitution
This part replaces 180504. Substitute parts can look different from the original.
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$3.77 | 
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Lawn & Garden Equipment Washer (replaces 532851074, 5328510-74) 851074
#48

Handle/engine/housing diagram

Lawn & garden equipment washer (replaces 532851074, 5328510-74)

Part #851074

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Lawn Mower Blade Adapter 184590
#46

Handle/engine/housing diagram

Lawn mower blade adapter

Part #184590

Replaced by #418373

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Manufacturer substitution
This part replaces 184590. Substitute parts can look different from the original.
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$15.59 | 
11% OFF Phone Price : $17.59
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Skirt.fwgd 178398
#20

Handle/engine/housing diagram

Skirt.fwgd

Part #178398

Replaced by #413159

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Manufacturer substitution
This part replaces 178398. Substitute parts can look different from the original.
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$10.49 | 
16% OFF Phone Price : $12.49
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Drive Spring 175285
#85

Handle/engine/housing diagram

Drive spring

Part #175285

Replaced by #193000

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Manufacturer substitution
This part replaces 175285. Substitute parts can look different from the original.
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$5.49 | 
15% OFF Phone Price : $6.49
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Drive Control 184587
#1

Grassbag/wheels/gear case diagram

Drive control

Part #184587

Replaced by #532184588

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Manufacturer substitution
This part replaces 184587. Substitute parts can look different from the original.
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$55.94 | 
8% OFF Phone Price : $60.94
In Stock

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

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Why does my lawn mower run rough?

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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Why does my lawn mower cut unevenly?

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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Why won't my lawn mower start?

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

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Why does my lawn mower stall?

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

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Why won't my lawn mower move?

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

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How to replace a lawn mower spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower blade

How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged. …

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

Read more
Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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Tapping into a new feature in the Search Bar on Sears PartsDirect

Tapping into a new feature in the Search Bar on Sears PartsDirect

Learn about a new feature added to the Search Bar on Sears PartsDirect…

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Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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