Gas Walk-Behind Mower

Model # 7800003 Official Snapper 21" steel deck easy line

Here are the diagrams and repair parts for Official Snapper 7800003 21" steel deck easy line, as well as links to manuals and error code tables, if available.

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7800003 Walk-Behind Mowers
Hln, 1/4c Bz 7076978
Hln, 1/4c bz

Part #7076978

Replaced by #703232

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Manufacturer substitution
This part replaces 7076978. Substitute parts can look different from the original.
This item is not returnable
$6.44
13% OFF Phone Price : $7.44
In Stock
Rhsnb, 5/16c 7091612
#21

Handles/controls diagram

Rhsnb, 5/16c

Part #7091612

Replaced by #704210

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Manufacturer substitution
This part replaces 7091612. Substitute parts can look different from the original.
$7.69
12% OFF Phone Price : $8.69
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Hfln 3/8 7091619
#8

Rear deck brackets/idler arm diagram

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.
This item is not returnable
$8.09
11% OFF Phone Price : $9.09
In Stock
Blade 7100242
#10

Engine/blade diagram

Blade

Part #7100242

Replaced by #7100242AYP

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Manufacturer substitution
This part replaces 7100242. Substitute parts can look different from the original.

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$36.69
14% OFF Phone Price : $42.69
In Stock
Plate 7300130
#2

Handles/controls diagram

Plate

Part #7300130

Replaced by #7300130AMA

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Manufacturer substitution
This part replaces 7300130. Substitute parts can look different from the original.
In Stock
Nut 7091070
Nut

Part #7091070

Replaced by #703409

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Manufacturer substitution
This part replaces 7091070. Substitute parts can look different from the original.
$9.27
10% OFF Phone Price : $10.27
In Stock
Battery 7100204
#24

Rear wheels (self-propelled) diagram

Battery

Part #7100204

The manufacturer no longer makes this part, and there's no substitute part

Cap 7100088
Cap

Part #7100088

Replaced by #20107MA

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Manufacturer substitution
This part replaces 7100088. Substitute parts can look different from the original.
In Stock
Phst, Torx, 7091984
#6

Bagging diagram

Phst, torx,

Part #7091984

Replaced by #7091984YP

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Manufacturer substitution
This part replaces 7091984. Substitute parts can look different from the original.
In Stock
Grip, Height Latch 7100633
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.
This item is not returnable
In Stock

Symptoms for gas walk-behind mowers

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

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

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

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

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

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 drive cable

How to replace a lawn mower drive cable

The drive cable engages the transmission to spin the drive wheels and move the mower across the grass. Replace the drive…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower starter rope

How to replace a lawn mower starter rope

These step-by-step instructions show how to replace a broken starter pull rope on a walk-behind lawn mower.…

Repair difficulty
Time required
 30 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.

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.…

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.…

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.…