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Snapper 7800004 (SP21) lawn mower Parts

Here are the diagrams and repair parts for Snapper 7800004 (SP21) lawn mower, as well as links to manuals and error code tables, if available.

Snapper 7800004 (SP21) lawn mower
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Browse Parts for 7800004 (SP21) Walk-Behind Mowers

  • Seal for Snapper 7800004 (SP21) - Part 7026479YP

    Rear wheels (self-propelled) diagram

    Snapper Pinion Seal

    Part #7026479

    Replaced by #7026479YP

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    Manufacturer substitution
    This part replaces 7026479. Substitute parts can look different from the original.
    In Stock
    $30.95
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  • Wheel Euro for Snapper 7800004 (SP21) - Part 7101127YP

    Front wheels diagram

    Snapper R/b 7101105

    Part #7100015

    Replaced by #7101127YP

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    Manufacturer substitution
    This part replaces 7100015. Substitute parts can look different from the original.
    In Stock
    $109.89
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  • Grip for Snapper 7800004 (SP21) - Part 7103793YP

    Snapper Grip, Height Latch

    Part #7100633

    Replaced by #7103793YP

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    Manufacturer substitution
    This part replaces 7100633. Substitute parts can look different from the original.
    In Stock
    $8.06
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  • Nut for Snapper 7800004 (SP21) - Part 703333

    Rear deck brackets/idler arm diagram

    Snapper Hfln 3/8

    Part #7091619

    Replaced by #703333

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    Manufacturer substitution
    This part replaces 7091619. Substitute parts can look different from the original.
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    $9.23
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  • Pulley for Snapper 7800004 (SP21) - Part 7024228SM

    Bagging diagram

    Snapper Pulley

    Part #7024228

    Replaced by #7024228SM

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    Manufacturer substitution
    This part replaces 7024228. Substitute parts can look different from the original.
    In Stock
    $32.12
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  • Bolt for Snapper 7800004 (SP21) - Part 5025010X18SM

    Rear deck brackets/idler arm diagram

    Snapper Hex Head Cap Screw

    Part #7091256

    Replaced by #5025010X18SM

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    Manufacturer substitution
    This part replaces 7091256. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $6.43
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  • Bushing for Snapper 7800004 (SP21) - Part 7073618YP

    Rear wheels (self-propelled) diagram

    Snapper Bushing

    Part #7073618

    Replaced by #7073618YP

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    Manufacturer substitution
    This part replaces 7073618. Substitute parts can look different from the original.
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    $36.32
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  • Rhssnb for Snapper 7800004 (SP21) - Part 7900009SM

    Rear deck brackets/idler arm diagram

    Snapper Rhssnb, 3/8-

    Part #7900009

    Replaced by #7900009SM

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    Manufacturer substitution
    This part replaces 7900009. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $6.89
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  • Handle for Snapper 7800004 (SP21) - Part 7078246AYP

    Handles/controls diagram

    Snapper Lawn Mower Handle

    Part #7078246

    Replaced by #7078246AYP

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    Manufacturer substitution
    This part replaces 7078246. Substitute parts can look different from the original.
    In Stock
    $190.74
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  • Bearing-ball for Snapper 7800004 (SP21) - Part 7078243YP

    Rear wheels (self-propelled) diagram

    Snapper Ball Bearing

    Part #7078243

    Replaced by #7078243YP

    Info Icon
    Manufacturer substitution
    This part replaces 7078243. Substitute parts can look different from the original.
    In Stock
    $20.26
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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.

View all

Why does my lawn mower vibrate a lot?

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

Read more

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…

Read more

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.…

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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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