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Gas Walk-Behind Mower

Model # 5521BBC Official Husqvarna lawn mower

Here are the diagrams and repair parts for Official Husqvarna 5521BBC lawn mower, as well as links to manuals and error code tables, if available.

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Browse Parts for5521BBC Walk-Behind Mowers

  • Hex Nut 532083923
    #33

    Wheels/tires/gearcase diagram

    Hex nut

    Part #532083923

    Replaced by #532409149

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    Manufacturer substitution
    This part replaces 532083923. Substitute parts can look different from the original.
    BEST SELLER
    This item is not returnable
    $2.49
    29% OFF Phone Price : $3.49
    In Stock
  • Hex Flange Nut 532132010
    #15

    Wheels/tires/gearcase diagram

    Hex flange nut

    Part #532132010

    Replaced by #532409149

    ?
    Manufacturer substitution
    This part replaces 532132010. Substitute parts can look different from the original.
    BEST SELLER
    This item is not returnable
    $2.49
    29% OFF Phone Price : $3.49
    In Stock
  • Locking Flange Nut 873900600
    #64

    Engine/housing/handle/bag diagram

    Locking flange nut

    Part #873900600

    Replaced by #532409149

    ?
    Manufacturer substitution
    This part replaces 873900600. Substitute parts can look different from the original.
    BEST SELLER
    This item is not returnable
    $2.49
    29% OFF Phone Price : $3.49
    In Stock
  • Hex Flange Nut 532145212
    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
    $2.49
    29% OFF Phone Price : $3.49
    In Stock
  • Lawn Tractor Hex Lock Nut 873800500
    #24

    Engine/housing/handle/bag diagram

    Lawn tractor hex lock nut

    Part #873800500

    Replaced by #596040501

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    Manufacturer substitution
    This part replaces 873800500. Substitute parts can look different from the original.
    BEST SELLER
    In Stock
  • Wheel.9x2.pr 532180774
    #32

    Wheels/tires/gearcase diagram

    Wheel.9x2.pr

    Part #532180774

    Replaced by #532193139

    ?
    Manufacturer substitution
    This part replaces 532180774. Substitute parts can look different from the original.
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    $54.15
    10% OFF Phone Price : $60.15
    In Stock
  • Lawn Mower Drive Pinion Torsion Spring 532188291
    #46

    Wheels/tires/gearcase diagram

    Lawn mower drive pinion torsion spring

    Part #532188291

    BEST SELLER
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    $5.76
    15% OFF Phone Price : $6.76
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  • Hex Nut 532132004
    #5

    Engine/housing/handle/bag diagram

    Hex nut

    Part #532132004

    Replaced by #582478602

    ?
    Manufacturer substitution
    This part replaces 532132004. Substitute parts can look different from the original.
    BEST SELLER
    This item is not returnable
    $2.87
    26% OFF Phone Price : $3.87
    In Stock
  • Husqvarna E-ring 812000058
    #28

    Wheels/tires/gearcase diagram

    Husqvarna e-ring

    Part #812000058

    BEST SELLER
    This item is not returnable
    In Stock
  • Grassbag.323 532195072
    #83

    Engine/housing/handle/bag diagram

    Grassbag.323

    Part #532195072

    Replaced by #532410667

    ?
    Manufacturer substitution
    This part replaces 532195072. Substitute parts can look different from the original.
    BEST SELLER
    $87.69
    6% OFF Phone Price : $93.69
    In Stock

Symptoms for gas walk-behind mowers

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

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

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

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

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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.

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…

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. …

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…

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.

The best time of day to mow grass (and when you should absolutely not)

The best time of day to mow grass (and when you should absolutely not)

Wondering when to mow your lawn for the best results? Timing matters more than you might think. Discover the best time o…

Top 10 electric lawn and garden tools

Top 10 electric lawn and garden tools

Learn about the top 10 must-have electric lawn & garden tools for 2023…

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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