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Husqvarna
Gas Walk-Behind Mower

Model # 55R21HVC Official Husqvarna lawn mower

Here are the diagrams and repair parts for Official Husqvarna 55R21HVC 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.

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 125 parts  |
Hex Flange Nut 532132010
#20

Wheels/tires/drive control diagram

Hex flange nut

Part #532132010

Replaced by #532409149

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Manufacturer substitution
This part replaces 532132010. 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 Nut 532083923
#33

Wheels/tires/drive control diagram

Hex nut

Part #532083923

Replaced by #532409149

?
Manufacturer substitution
This part replaces 532083923. 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 Nut 532145212
#24

Wheels/tires/drive control diagram

Hex flange nut

Part #532145212

Replaced by #532409149

?
Manufacturer substitution
This part replaces 532145212. 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 Drive Pinion Torsion Spring (replaces 188291) 532188291
#36

Wheels/tires/drive control diagram

Lawn mower drive pinion torsion spring (replaces 188291)

Part #532188291

BEST SELLER
This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Wheel Assembly 532188631
#32

Wheels/tires/drive control diagram

Wheel assembly

Part #532188631

Replaced by #192622

?
Manufacturer substitution
This part replaces 532188631. Substitute parts can look different from the original.
BEST SELLER
$41.16 | 
11% OFF Phone Price : $46.38
In Stock
Engine Cable 532183473
#46

Handle/grassbag/engine/mower deck diagram

Engine cable

Part #532183473

Replaced by #164322

?
Manufacturer substitution
This part replaces 532183473. Substitute parts can look different from the original.
This item is not returnable
$16.00 | 
11% OFF Phone Price : $18.00
In Stock
Selector Lever 532190520
#43

Wheels/tires/drive control diagram

Selector lever

Part #532190520

Replaced by #532188508

?
Manufacturer substitution
This part replaces 532190520. Substitute parts can look different from the original.
$13.69
In Stock
Blade Adapter 532183428
#20

Handle/grassbag/engine/mower deck diagram

Blade adapter

Part #532183428

Replaced by #532186766

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Manufacturer substitution
This part replaces 532183428. Substitute parts can look different from the original.
$32.98 | 
15% OFF Phone Price : $38.98
In Stock
Lawn Mower Bolt 872140405
#9

Handle/grassbag/engine/mower deck diagram

Lawn mower bolt

Part #872140405

This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Rod.hinge.1/43.82 532183445
Rod.hinge.1/43.82

Part #532183445

$10.26
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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Tapping into a new feature in the Search Bar on Sears PartsDirect

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

Top questions about Sears and Sears PartsDirect

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

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