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Poulan
Gas Walk-Behind Mower

Model # PO45N22SH Official Poulan rotary lawn mower

Here are the diagrams and repair parts for Official Poulan PO45N22SH 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 55 parts  |
Lock Nut 83923
#46

Rotary mower 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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$5.31 | 
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Hex Flange Lock Nut 145212
#24

Rotary mower 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.
BEST SELLER
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$5.31 | 
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Lawn Mower Blade 141114
#29

Rotary mower diagram

Lawn mower blade

Part #141114

Replaced by #532406713

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Manufacturer substitution
This part replaces 141114. Substitute parts can look different from the original.
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$28.29 | 
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Lawn Mower Engine Zone Control Cable 158152
#11

Rotary mower diagram

Lawn mower engine zone control cable

Part #158152

Replaced by #582991501

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Manufacturer substitution
This part replaces 158152. Substitute parts can look different from the original.
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$17.31 | 
10% OFF Phone Price : $19.31
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Lawn Mower Blade Adapter 193825
#28

Rotary mower diagram

Lawn mower blade adapter

Part #193825

Replaced by #581547901

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Manufacturer substitution
This part replaces 193825. Substitute parts can look different from the original.
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$18.44 | 
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Frigidaire Lawn Mower Discharge Chute Hinge Rod (replaces 532160833, 5321608-33) 160833
#37

Rotary mower diagram

Frigidaire lawn mower discharge chute hinge rod (replaces 532160833, 5321608-33)

Part #160833

This item is not returnable
$3.09 | 
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Wire Spring 193436
#27

Rotary mower diagram

Wire spring

Part #193436

Replaced by #532408585

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Manufacturer substitution
This part replaces 193436. Substitute parts can look different from the original.
This item is not returnable
$16.69 | 
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Decal 107339X
#38

Rotary mower diagram

Decal

Part #107339X

Replaced by #581724301

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Manufacturer substitution
This part replaces 107339X. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Lawn & Garden Equipment Lock Nut 73800400
#6

Rotary mower diagram

Lawn & garden equipment lock nut

Part #73800400

Replaced by #582478602

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Manufacturer substitution
This part replaces 73800400. Substitute parts can look different from the original.
This item is not returnable
$2.64 | 
27% OFF Phone Price : $3.64
In Stock
Hndl.knob.bl 189713X428
#16

Rotary mower diagram

Hndl.knob.bl

Part #189713X428

Replaced by #532185577

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Manufacturer substitution
This part replaces 189713X428. Substitute parts can look different from the original.
$10.64 | 
16% OFF Phone Price : $12.64
In Stock

Symptoms for gas walk-behind mowers

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

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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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Why does my lawn mower run rough?

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

Read more

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 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 cut unevenly?

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

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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 drive cable

How to replace a lawn mower drive cable

The drive cable engages the transmission to spin the drive wheels and move the mower across the grass. Replace the drive…

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

How to replace a lawn mower starter rope

These step-by-step instructions show how to replace a broken starter pull rope on a walk-behind lawn mower.…

Read more
Repair difficulty
Time required
 30 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

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

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