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Husqvarna
Gas Walk-Behind Mower

Model # 7021RB Official Husqvarna lawn mower

Here are the diagrams and repair parts for Official Husqvarna 7021RB lawn mower, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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Showing 10 of 113 parts  |
Craftsman Lawn Mower Transmission Axle Pin (replaces 404845, 5324048-45) 532404845
#31

Drive control/gear case/wheels diagram

Craftsman lawn mower transmission axle pin (replaces 404845, 5324048-45)

Part #532404845

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Hex Nut 532132004
#5

Engine/housing/handle diagram

Hex nut

Part #532132004

Replaced by #582478602

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Manufacturer substitution
This part replaces 532132004. Substitute parts can look different from the original.
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$2.64 | 
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Lawn Mower Handle Knob (replaces 182398, 587143001) 532182398
#8

Engine/housing/handle diagram

Lawn mower handle knob (replaces 182398, 587143001)

Part #532182398

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Lawn Mower Screw (replaces 88652) 532088652
#28

Engine/housing/handle diagram

Lawn mower screw (replaces 88652)

Part #532088652

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Guide.rope.s 532194788
#4

Engine/housing/handle diagram

Guide.rope.s

Part #532194788

Replaced by #586122501

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Manufacturer substitution
This part replaces 532194788. Substitute parts can look different from the original.
This item is not returnable
$15.59 | 
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Lawn Mower Ground Drive Belt (replaces 406580) 532406580
#44

Drive control/gear case/wheels diagram

Lawn mower ground drive belt (replaces 406580)

Part #532406580

Get free shipping with Automatic Reorder

$27.49 | 
18% OFF Phone Price : $33.49
In Stock
E-ring 812000058
#28

Drive control/gear case/wheels diagram

E-ring

Part #812000058

This item is not returnable
$5.11
In Stock
Nut 873900400
#74

Engine/housing/handle diagram

Nut

Part #873900400

Replaced by #586668901

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Manufacturer substitution
This part replaces 873900400. Substitute parts can look different from the original.
This item is not returnable
$6.83
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Wheel.8x1.75 532410831
#40

Drive control/gear case/wheels diagram

Wheel.8x1.75

Part #532410831

Replaced by #532401273

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Manufacturer substitution
This part replaces 532410831. Substitute parts can look different from the original.
This item is not returnable
$29.98 | 
17% OFF Phone Price : $35.98
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Lawn Mower Nut 532088349
#47

Engine/housing/handle diagram

Lawn mower nut

Part #532088349

This item is not returnable
$6.83
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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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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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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