Snapper
Gas Walk-Behind Mower

Model # 7800003 (S21) Official Snapper lawn mower

Here are the diagrams and repair parts for Official Snapper 7800003-S21 lawn mower, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 163 parts  |

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.
BEST SELLER
This item is not returnable
$6.24
14% OFF Phone Price : $7.24
In Stock
Lawn & Garden Equipment Nut 7091135
Lawn & garden equipment nut

Part #7091135

Replaced by #703948

?
Manufacturer substitution
This part replaces 7091135. Substitute parts can look different from the original.
This item is not returnable
$7.29
12% OFF Phone Price : $8.29
In Stock
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
Lawn Mower Grass Bag 7075765
#2

Bagging diagram

Lawn mower grass bag

Part #7075765

Replaced by #7075765YP

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Manufacturer substitution
This part replaces 7075765. Substitute parts can look different from the original.
$164.29
6% OFF Phone Price : $174.29
In Stock
Axle Arm Assembly 7078236
Axle arm assembly

Part #7078236

Replaced by #7078236YP

?
Manufacturer substitution
This part replaces 7078236. Substitute parts can look different from the original.
In Stock
Lawn Mower Decal 7046357
#6

Decals diagram

Lawn mower decal

Part #7046357

Replaced by #7046357YP

?
Manufacturer substitution
This part replaces 7046357. Substitute parts can look different from the original.
In Stock
Lawn Mower Spacer 7200010
#5

Engine/blade diagram

Lawn mower spacer

Part #7200010

Replaced by #7200010YP

?
Manufacturer substitution
This part replaces 7200010. Substitute parts can look different from the original.
This item is not returnable
In Stock
Chute 7042965
#20

Guards/covers diagram

Chute

Part #7042965

Replaced by #7042965YP

?
Manufacturer substitution
This part replaces 7042965. Substitute parts can look different from the original.
$77.89
6% OFF Phone Price : $82.89
In Stock
Drive Pinion 7024550
#4

Rear wheels (self-propelled) diagram

Drive pinion

Part #7024550

Replaced by #7024550YP

?
Manufacturer substitution
This part replaces 7024550. Substitute parts can look different from the original.
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

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.

Tapping into a new feature in the Search Bar on Sears PartsDirect

Tapping into a new feature in the Search Bar on Sears PartsDirect

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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

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