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Poulan
Gas Walk-Behind Mower

Model # PR55Y21CHB Official Poulan rotary lawn mower

Here are the diagrams and repair parts for Official Poulan PR55Y21CHB 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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ALL PARTS
Showing 10 of 103 parts  |
Lock Nut 83923
#26

Engine/housing/handle/wheels 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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$5.31 | 
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Pipe Fitting 132010
#31

Wheels/tires/bag diagram

Pipe fitting

Part #132010

Replaced by #532409149

?
Manufacturer substitution
This part replaces 132010. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Hex Flange Lock Nut 145212
#9

Wheels/tires/bag diagram

Hex flange lock nut

Part #145212

Replaced by #532409149

?
Manufacturer substitution
This part replaces 145212. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Lawn Mower Wheel Assembly 180767
#11

Wheels/tires/bag diagram

Lawn mower wheel assembly

Part #180767

Replaced by #180775

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Manufacturer substitution
This part replaces 180767. Substitute parts can look different from the original.
BEST SELLER
$23.63 | 
20% OFF Phone Price : $29.63
In Stock
Dust Cover 180504
#14

Wheels/tires/bag 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.
BEST SELLER
$7.98 | 
11% OFF Phone Price : $8.98
In Stock
Drive Control 184587
#1

Wheels/tires/bag 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.
BEST SELLER
$51.68 | 
10% OFF Phone Price : $57.68
In Stock
Washer 67725
#16

Wheels/tires/bag diagram

Washer

Part #67725

Replaced by #532067725

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Manufacturer substitution
This part replaces 67725. Substitute parts can look different from the original.
BEST SELLER
$7.98 | 
11% OFF Phone Price : $8.98
In Stock
Hubcap.3".ma 180624
#91

Engine/housing/handle/wheels diagram

Hubcap.3".ma

Part #180624

Replaced by #584459901

?
Manufacturer substitution
This part replaces 180624. Substitute parts can look different from the original.
This item is not returnable
$10.26
In Stock
Lock Nut 751152
#3

Wheels/tires/bag diagram

Lock nut

Part #751152

Replaced by #532191730

?
Manufacturer substitution
This part replaces 751152. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Lawn Mower Drive Pinion Gear (replaces 532137054) 137054
#13

Wheels/tires/bag diagram

Lawn mower drive pinion gear (replaces 532137054)

Part #137054

Replaced by #532137054

?
Manufacturer substitution
This part replaces 137054. Substitute parts can look different from the original.
$8.54
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 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 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 cut unevenly?

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

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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…

Read more

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 vibrate a lot?

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

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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 recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower carburetor

How to replace a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Replace the carburetor if it's clogged or damaged.…

Read more
Repair difficulty
Time required
 15 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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How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

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

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Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them.…

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