Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Tips to find your model number
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
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.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 163 parts  |
Rhsnb, 5/16c 7091612
#21

Handles/controls diagram

Rhsnb, 5/16c

Part #7091612

Replaced by #704210

?
Manufacturer substitution
This part replaces 7091612. Substitute parts can look different from the original.
$7.69 | 
12% OFF Phone Price : $8.69
In Stock
Retaining Ring 7014341
#3

Rear wheels (self-propelled) diagram

Retaining ring

Part #7014341

Replaced by #703976

?
Manufacturer substitution
This part replaces 7014341. Substitute parts can look different from the original.
This item is not returnable
$7.09 | 
12% OFF Phone Price : $8.09
In Stock
Cover 7029149
#10B

Guards/covers diagram

Cover

Part #7029149

Replaced by #7029149YP

?
Manufacturer substitution
This part replaces 7029149. Substitute parts can look different from the original.
$44.59 | 
12% OFF Phone Price : $50.59
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.
$74.77 | 
7% OFF Phone Price : $80.77
In Stock
Knob 7035744
#7

Handles/controls diagram

Knob

Part #7035744

Replaced by #703065

?
Manufacturer substitution
This part replaces 7035744. Substitute parts can look different from the original.
This item is not returnable
$11.89 | 
14% OFF Phone Price : $13.89
In Stock
Belt 7100058
#7

Transmission diagram

Belt

Part #7100058

Replaced by #7100058YP

?
Manufacturer substitution
This part replaces 7100058. Substitute parts can look different from the original.

Get free shipping with Automatic Reorder

$30.62
In Stock
Hex Head Cap Screw 7900011
#26

Rear wheels (self-propelled) diagram

Hex head cap screw

Part #7900011

Replaced by #7900011MA

?
Manufacturer substitution
This part replaces 7900011. Substitute parts can look different from the original.
$8.74
In Stock
Belt Guide 7100395
#5

Transmission diagram

Belt guide

Part #7100395

Replaced by #7100395YP

?
Manufacturer substitution
This part replaces 7100395. Substitute parts can look different from the original.
$21.49
In Stock
Pulley 7100437
#6

Engine/blade diagram

Pulley

Part #7100437

Replaced by #7100437YP

?
Manufacturer substitution
This part replaces 7100437. Substitute parts can look different from the original.
$58.16
In Stock
Lawn Mower Housing 7100328
#24

Handles/controls diagram

Lawn mower housing

Part #7100328

Replaced by #7100328YP

?
Manufacturer substitution
This part replaces 7100328. Substitute parts can look different from the original.
$20.31
In Stock

Symptoms for gas walk-behind mowers

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

View all

Why does my lawn mower run rough?

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

Read more

Why does my lawn mower cut unevenly?

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

Read more

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 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…

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

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.

View all
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…

Read more
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. …

Read more
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…

Read more
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.

View all
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.…

Read more
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.…

Read more
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.…

Read more

Parts & More