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Poulan
Gas Walk-Behind Mower

Model # PR55N21CHE Official Poulan rotary lawn mower

Here are the diagrams and repair parts for Official Poulan PR55N21CHE rotary lawn mower, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

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

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

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ALL PARTS
Showing 10 of 69 parts  |
Lock Nut 83923
#39

Engine/housing/wheels/handle 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
This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Handle Bolt 131959
#6

Engine/housing/wheels/handle diagram

Handle bolt

Part #131959

Replaced by #532191574

?
Manufacturer substitution
This part replaces 131959. Substitute parts can look different from the original.
BEST SELLER
$7.98 | 
11% OFF Phone Price : $8.98
In Stock
Lock Nut 73800500
#24

Engine/housing/wheels/handle diagram

Lock nut

Part #73800500

Replaced by #596040501

?
Manufacturer substitution
This part replaces 73800500. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.11
In Stock
Nut Lck 5/16 73990500
#35

Engine/housing/wheels/handle diagram

Nut lck 5/16

Part #73990500

Replaced by #596040501

?
Manufacturer substitution
This part replaces 73990500. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.11
In Stock
Discharge Guard 165760
#31

Engine/housing/wheels/handle diagram

Discharge guard

Part #165760

Replaced by #589482402

?
Manufacturer substitution
This part replaces 165760. Substitute parts can look different from the original.
BEST SELLER
$11.98 | 
14% OFF Phone Price : $13.98
In Stock
Gbag.250c2.b 184781
#67

Engine/housing/wheels/handle diagram

Gbag.250c2.b

Part #184781

Replaced by #532410666

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Manufacturer substitution
This part replaces 184781. Substitute parts can look different from the original.
BEST SELLER
$68.54 | 
8% OFF Phone Price : $74.54
In Stock
Mulcher Door 165754
#10

Engine/housing/wheels/handle diagram

Mulcher door

Part #165754

Replaced by #532165754

?
Manufacturer substitution
This part replaces 165754. Substitute parts can look different from the original.
This item is not returnable
$13.31 | 
13% OFF Phone Price : $15.31
In Stock
Rod.hinge.co 147286
#16

Engine/housing/wheels/handle diagram

Rod.hinge.co

Part #147286

Replaced by #532147286

?
Manufacturer substitution
This part replaces 147286. Substitute parts can look different from the original.
This item is not returnable
$9.31 | 
10% OFF Phone Price : $10.31
In Stock
Wheel And Tire 157178
#78

Engine/housing/wheels/handle diagram

Wheel and tire

Part #157178

Replaced by #532150339

?
Manufacturer substitution
This part replaces 157178. Substitute parts can look different from the original.
$32.98 | 
15% OFF Phone Price : $38.98
In Stock
Lawn & Garden Equipment Washer (replaces 532851074, 5328510-74) 851074
#55

Engine/housing/wheels/handle diagram

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

Part #851074

Replaced by #532851074

?
Manufacturer substitution
This part replaces 851074. Substitute parts can look different from the original.
This item is not returnable
$6.83
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…

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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. …

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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…

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

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