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Snapper
Gas Walk-Behind Mower

Model # RP21550 Official Snapper lawn mower

Here are the diagrams and repair parts for Official Snapper RP21550 lawn mower, as well as links to manuals and error code tables, if available.

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

Model diagram and schematic

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ALL PARTS
Showing 10 of 386 parts  |
Fln 5/16-18 7091601
Fln 5/16-18

Part #7091601

Replaced by #703409

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Manufacturer substitution
This part replaces 7091601. Substitute parts can look different from the original.
$9.27 | 
10% OFF Phone Price : $10.27
In Stock
Rhsnb, 5/16c 7090316
#35

Drive system self-propelled diagram

Rhsnb, 5/16c

Part #7090316

Replaced by #703225

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Manufacturer substitution
This part replaces 7090316. Substitute parts can look different from the original.
This item is not returnable
$6.29 | 
14% OFF Phone Price : $7.29
In Stock
Key 7073406
#5

Electric start diagram

Key

Part #7073406

Replaced by #1717163SM

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Manufacturer substitution
This part replaces 7073406. Substitute parts can look different from the original.
This item is not returnable
$13.31 | 
13% OFF Phone Price : $15.31
In Stock
Blade 7026691
#14B

Cutting deck/blade/interlock 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
In Stock
Hn, 5/16c Gr 7091511
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
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
In Stock
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
Housing, Lh 7029033
#29A

Transmission (differential) diagram

Housing, lh

Part #7029033

Replaced by #7029033YP

?
Manufacturer substitution
This part replaces 7029033. Substitute parts can look different from the original.
$46.00
In Stock
Retainer, Bolt 5/16" 7011791
Retainer, bolt 5/16"

Part #7011791

Replaced by #703297

?
Manufacturer substitution
This part replaces 7011791. Substitute parts can look different from the original.
This item is not returnable
$6.71
In Stock
Arm, Idler V 7032116
Arm, idler v

Part #7032116

Replaced by #7032116YP

?
Manufacturer substitution
This part replaces 7032116. Substitute parts can look different from the original.
$25.23
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.…

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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.…

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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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