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Snapper
Gas Walk-Behind Mower

Model # 7800172 Official Snapper lawn mower

Here are the diagrams and repair parts for Official Snapper 7800172 lawn mower, as well as links to manuals and error code tables, if available.

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Owner’s manual
  View engine

Model diagram and schematic

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Showing 10 of 658 parts  |
Hln, 1/4c Bz 7076978
#49

Handles/controls diagram

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.
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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 | 
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Belt 7046784
#20

Drive system self-propelled diagram

Belt

Part #7046784

Replaced by #7046784YP

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Manufacturer substitution
This part replaces 7046784. Substitute parts can look different from the original.

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$25.16
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Blade 7026691
#16

Cutting decks, blades diagram

Blade

Part #7026691

Replaced by #7026691BZYP

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Manufacturer substitution
This part replaces 7026691. Substitute parts can look different from the original.
This item is not returnable

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$27.69 | 
18% OFF Phone Price : $33.69
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Clutch Control 7034604
#10

Handles/controls diagram

Clutch control

Part #7034604

Replaced by #7034604YP

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Manufacturer substitution
This part replaces 7034604. Substitute parts can look different from the original.
$29.69
In Stock
Hex Head Cap Screw 7091305
#42

Handles/controls diagram

Hex head cap screw

Part #7091305

Replaced by #703589

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Manufacturer substitution
This part replaces 7091305. Substitute parts can look different from the original.
$7.69 | 
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Hcln 3/8 7091585
#43

Handles/controls diagram

Hcln 3/8

Part #7091585

Replaced by #703347

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Manufacturer substitution
This part replaces 7091585. Substitute parts can look different from the original.
This item is not returnable
$8.69
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Hn, 5/16c Gr 7091511
#21

Thatcherizer assembly diagram

Hn, 5/16c gr

Part #7091511

Replaced by #7091511SM

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Manufacturer substitution
This part replaces 7091511. Substitute parts can look different from the original.
This item is not returnable
$6.23
In Stock
Hflb, 5/16c 7090595
#24

Handles/controls diagram

Hflb, 5/16c

Part #7090595

Replaced by #703354

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Manufacturer substitution
This part replaces 7090595. Substitute parts can look different from the original.
This item is not returnable
$8.89 | 
10% OFF Phone Price : $9.89
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Slw, .318x.5 7090187
Slw, .318x.5

Part #7090187

Replaced by #703116

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Manufacturer substitution
This part replaces 7090187. Substitute parts can look different from the original.
This item is not returnable
$5.79 | 
15% OFF Phone Price : $6.79
In Stock

Symptoms for gas walk-behind mowers

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

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Why does my lawn mower vibrate a lot?

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

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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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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 won't my lawn mower move?

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

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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 stall?

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

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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 rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Read more
Repair difficulty
Time required
 15 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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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.…

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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.…

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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.…

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