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Frigidaire
Gas Walk-Behind Mower

Model # PP55HN21CA Official Frigidaire rotary lawn mower

Here are the diagrams and repair parts for Official Frigidaire PP55HN21CA 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 59 parts  |
Belt, 21-in 165833
#56

Replacement parts diagram

Belt, 21-in

Part #165833

Replaced by #532406712

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Manufacturer substitution
This part replaces 165833. Substitute parts can look different from the original.
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$22.13 | 
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Handle Knob 136376
#14

Replacement parts diagram

Handle knob

Part #136376

Replaced by #532185577

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Manufacturer substitution
This part replaces 136376. Substitute parts can look different from the original.
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Handle Bolt 131959
#6

Replacement parts diagram

Handle bolt

Part #131959

Replaced by #532191574

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Manufacturer substitution
This part replaces 131959. Substitute parts can look different from the original.
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Mulcher Door 165754
#10

Replacement parts 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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Torsion Spring 152124
#28

Replacement parts diagram

Torsion spring

Part #152124

Replaced by #532152124

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Manufacturer substitution
This part replaces 152124. Substitute parts can look different from the original.
This item is not returnable
$7.98 | 
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Rope Guide 132001
#4

Replacement parts diagram

Rope guide

Part #132001

Replaced by #586122501

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Manufacturer substitution
This part replaces 132001. Substitute parts can look different from the original.
This item is not returnable
$15.59 | 
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Walk-behind Lawn Mower Selector Knob 87877
#33

Replacement parts diagram

Walk-behind lawn mower selector knob

Part #87877

Replaced by #532087877

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Manufacturer substitution
This part replaces 87877. Substitute parts can look different from the original.
This item is not returnable
$5.31 | 
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Tapping Screw 750097
#12

Replacement parts diagram

Tapping screw

Part #750097

Replaced by #817021008

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Manufacturer substitution
This part replaces 750097. Substitute parts can look different from the original.
This item is not returnable
$3.99
In Stock
Lawn & Garden Equipment Washer (replaces 532851074, 5328510-74) 851074
#55

Replacement parts diagram

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

Part #851074

Replaced by #532851074

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Manufacturer substitution
This part replaces 851074. Substitute parts can look different from the original.
This item is not returnable
$6.83
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Lawn Mower Wheel 146247
#37

Replacement parts diagram

Lawn mower wheel

Part #146247

Replaced by #532151155

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Manufacturer substitution
This part replaces 146247. Substitute parts can look different from the original.
$27.28 | 
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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…

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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 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 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.…

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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.…

Read more
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.…

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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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