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Husqvarna
Gas Walk-Behind Mower

Model # 55R21HVA Official Husqvarna rotary lawn mower

Here are the diagrams and repair parts for Official Husqvarna 55R21HVA 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 123 parts  |
Grass Bag Door 532186002
#7

Engine/housing/handle/bag diagram

Grass bag door

Part #532186002

Replaced by #583708701

?
Manufacturer substitution
This part replaces 532186002. Substitute parts can look different from the original.
$37.98 | 
14% OFF Phone Price : $43.98
In Stock
E-ring 812000058
#38

Wheels/tires/belt diagram

E-ring

Part #812000058

This item is not returnable
$5.11
In Stock
Pawl.drive.21.ez-walk 532175098
#37

Wheels/tires/belt diagram

Pawl.drive.21.ez-walk

Part #532175098

$8.54
In Stock
Idler Pulley 532166043
#27

Wheels/tires/belt diagram

Idler pulley

Part #532166043

$37.31
In Stock
Screw.ta 817060410
#29

Wheels/tires/belt diagram

Screw.ta

Part #817060410

This item is not returnable
$6.83
In Stock
E-ring 812000014
#6

Engine/housing/handle/bag diagram

E-ring

Part #812000014

This item is not returnable
$6.83
In Stock
Washer 532088348
#31

Wheels/tires/belt diagram

Washer

Part #532088348

Replaced by #532088348

?
Manufacturer substitution
This part replaces 532088348. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Bracket, Ups 532125203
#48

Engine/housing/handle/bag diagram

Bracket, ups

Part #532125203

Replaced by #532430034

?
Manufacturer substitution
This part replaces 532125203. Substitute parts can look different from the original.
$10.26
In Stock
Cover, Rear Drive 532185997
#10

Wheels/tires/belt diagram

Cover, rear drive

Part #532185997

$26.64
In Stock
Decal 532185913
#56

Wheels/tires/belt diagram

Decal

Part #532185913

$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 vibrate a lot?

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

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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 run rough?

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

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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 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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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.…

Read more
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.…

Read more
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

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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