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Lawn-Boy S21ZPR lawn mower

Lawn-Boy S21ZPR lawn mower Parts

Here are the diagrams and repair parts for Lawn-Boy S21ZPR lawn mower, as well as links to manuals and error code tables, if available.

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Browse Parts for S21ZPR Walk-Behind Mowers

  • Toro Lawn Mower Bolt for Lawn-Boy S21ZPR - Part 603441

    Housing and shroud group diagram

    Bolt

    Part #603441

    Replaced by #603441

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    Manufacturer substitution
    This part replaces 603441. Substitute parts can look different from the original.
    In Stock
    $37.83
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  • Toro Lock Washer for Lawn-Boy S21ZPR - Part 3253-6

    Engine group diagram

    Lock Washer

    Part #316959

    Replaced by #3253-6

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    Manufacturer substitution
    This part replaces 316959. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $2.16
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    Qty
    Plus Item
  • Toro Gasket for Lawn-Boy S21ZPR - Part 612574

    Gasket

    Part #612574

    Replaced by #612574

    Info Icon
    Manufacturer substitution
    This part replaces 612574. Substitute parts can look different from the original.
    In Stock
    $35.68
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  • Toro Bowl for Lawn-Boy S21ZPR - Part 683782

    #NI

    All parts diagram

    Bowl Kit

    Part #683782

    Replaced by #683782

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    Manufacturer substitution
    This part replaces 683782. Substitute parts can look different from the original.
    In Stock
    $144.86
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  • Toro Washer for Lawn-Boy S21ZPR - Part 146015

    Housing and shroud group diagram

    Washer

    Part #146015

    Replaced by #146015

    Info Icon
    Manufacturer substitution
    This part replaces 146015. Substitute parts can look different from the original.
    In Stock
    $30.75
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    Plus Item
  • Toro Washer for Lawn-Boy S21ZPR - Part 608834

    Housing and shroud group diagram

    Washer

    Part #608834

    Replaced by #608834

    Info Icon
    Manufacturer substitution
    This part replaces 608834. Substitute parts can look different from the original.
    In Stock
    $48.57
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    Qty
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  • Toro Brace Assembly for Lawn-Boy S21ZPR - Part 683581

    Engine group diagram

    Brace Assembly

    Part #683581

    Replaced by #683581

    Info Icon
    Manufacturer substitution
    This part replaces 683581. Substitute parts can look different from the original.
    In Stock
    $65.33
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    Qty
    Plus Item
  • Toro Lawn-boy Lawn Mower Screw for Lawn-Boy S21ZPR - Part 609471

    Housing and shroud group diagram

    Screw

    Part #609471

    Replaced by #609471

    Info Icon
    Manufacturer substitution
    This part replaces 609471. Substitute parts can look different from the original.
    In Stock
    $31.90
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  • Toro Column for Lawn-Boy S21ZPR - Part 611541

    Handle group diagram

    Column

    Part #611541

    Replaced by #611541

    Info Icon
    Manufacturer substitution
    This part replaces 611541. Substitute parts can look different from the original.
    In Stock
    $23.64
    Minus Item
    Qty
    Plus Item
  • Toro Element Kit for Lawn-Boy S21ZPR - Part 107-4621

    Carburetor group diagram

    Element

    Part #609493

    Replaced by #107-4621

    Info Icon
    Manufacturer substitution
    This part replaces 609493. Substitute parts can look different from the original.
    In Stock
    $33.52
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Most common symptoms to help you fix your 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 stall?

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

Read more

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 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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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 front deck tray

How to replace a lawn mower front deck tray

Learn how to replace the front deck tray on your lawn mower if it's cracked or damaged.…

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Repair time and Difficulty

 60 minutes or less
How to replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

Read more

Repair time and Difficulty

 60 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…

Read more

Repair time and Difficulty

 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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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…

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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…

Read more
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.…

Read more

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