Poulan
Gas Walk-Behind Mower

Model # PR55N21CHC Official Poulan rotary lawn mower

Here are the diagrams and repair parts for Official Poulan PR55N21CHC rotary lawn mower, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 68 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.
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Belt, 21-in 175064
#56

Engine/housing/wheels/handle diagram

Belt, 21-in

Part #175064

Replaced by #532406712

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Manufacturer substitution
This part replaces 175064. Substitute parts can look different from the original.
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$22.13
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Handle Bolt 131959
#6

Engine/housing/wheels/handle diagram

Handle bolt

Part #131959

Replaced by #532191574

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This part replaces 131959. Substitute parts can look different from the original.
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Discharge Guard 165760
#31

Engine/housing/wheels/handle diagram

Discharge guard

Part #165760

Replaced by #589482402

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Manufacturer substitution
This part replaces 165760. Substitute parts can look different from the original.
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Gbag.250c2.b 184781
#67

Engine/housing/wheels/handle diagram

Gbag.250c2.b

Part #184781

Replaced by #532410666

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This part replaces 184781. Substitute parts can look different from the original.
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Lawn Mower Blade Adapter 851514
#57

Engine/housing/wheels/handle diagram

Lawn mower blade adapter

Part #851514

Replaced by #581547901

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This part replaces 851514. Substitute parts can look different from the original.
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Nut 132004
#73

Engine/housing/wheels/handle diagram

Nut

Part #132004

Replaced by #582478602

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This part replaces 132004. Substitute parts can look different from the original.
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Lawn & Garden Equipment Hinge Screw 88652
#41

Engine/housing/wheels/handle diagram

Lawn & garden equipment hinge screw

Part #88652

Replaced by #532088652

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Manufacturer substitution
This part replaces 88652. Substitute parts can look different from the original.
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Mulcher Door 165754
#10

Engine/housing/wheels/handle diagram

Mulcher door

Part #165754

Replaced by #532165754

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Manufacturer substitution
This part replaces 165754. Substitute parts can look different from the original.
This item is not returnable
$13.31
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Rope Guide 179585
#4

Engine/housing/wheels/handle diagram

Rope guide

Part #179585

Replaced by #586122501

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Manufacturer substitution
This part replaces 179585. Substitute parts can look different from the original.
This item is not returnable
$15.59
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Symptoms for gas walk-behind mowers

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

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

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

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

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

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

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

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.

How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks....

Repair difficulty
Time required
60 minutes or less
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....

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

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix....

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.

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....

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....

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....