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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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7800003 (S21) Walk-Behind Mowers
#8
Rear deck brackets/idler arm diagram
Hfln 3/8
Part #7091619
Replaced by #703333
?
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
#10
Engine/blade diagram
Blade
Part #7100242
Replaced by #7100242AYP
?
Manufacturer substitution
This part replaces 7100242. Substitute parts can look different from the original.
Get free shipping with Automatic Reorder
$36.69 |
14% OFF Phone Price : $42.69
In Stock
#27
Handles/controls diagram
Cap e-start
Part #7100330
Replaced by #7100330YP
?
Manufacturer substitution
This part replaces 7100330. Substitute parts can look different from the original.
$12.71
In Stock
#15
Guards/covers diagram
Rhssnb, 5/16
Part #7900015
Replaced by #7900015YP
?
Manufacturer substitution
This part replaces 7900015. Substitute parts can look different from the original.
This item is not returnable
$7.37
In Stock
Grip, height latch
Part #7100633
Replaced by #7103793YP
?
Manufacturer substitution
This part replaces 7100633. Substitute parts can look different from the original.
This item is not returnable
$7.37
In Stock
#19
Bagging diagram
Pulley
Part #7024228
Replaced by #7024228SM
?
Manufacturer substitution
This part replaces 7024228. Substitute parts can look different from the original.
This item is not returnable
$8.94
In Stock
Hcln, large,
Part #7090951
Replaced by #704001
?
Manufacturer substitution
This part replaces 7090951. Substitute parts can look different from the original.
This item is not returnable
$7.77
In Stock
#2
Guards/covers diagram
Cover
Part #7100001
Replaced by #7100001YP
?
Manufacturer substitution
This part replaces 7100001. Substitute parts can look different from the original.
$100.71
In Stock
#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
#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
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
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
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
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.

Wondering when to mow your lawn for the best results? Timing matters more than you might think. Discover the best time o…

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Get answers to frequently asked questions about Sears and Sears PartsDirect.…