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Murray
Gas Walk-Behind Mower

Model # 20406X9A Official Murray lawn mower

Here are the diagrams and repair parts for Official Murray 20406X9A lawn mower, as well as links to manuals and error code tables, if available.

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  • 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”.

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

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 44 parts  |
Nut 15X116
#7

Handle diagram

Nut

Part #15X116

Replaced by #703232

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Manufacturer substitution
This part replaces 15X116. Substitute parts can look different from the original.
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This item is not returnable
$6.24 | 
14% OFF Phone Price : $7.24
In Stock
Wing Nut 71294
#4

Handle diagram

Wing nut

Part #71294

Replaced by #1501260MA

?
Manufacturer substitution
This part replaces 71294. Substitute parts can look different from the original.
$10.93 | 
15% OFF Phone Price : $12.93
In Stock
20" Blade 671921E701
#17

Engine diagram

20" blade

Part #671921E701

Replaced by #672763E701MA

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Manufacturer substitution
This part replaces 671921E701. Substitute parts can look different from the original.

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$34.71
In Stock
Push Nut 28X49
#5

Engine diagram

Push nut

Part #28X49

Replaced by #28X49MA

?
Manufacturer substitution
This part replaces 28X49. Substitute parts can look different from the original.
This item is not returnable
$7.11
In Stock
Washer 17X124
#15

Engine diagram

Washer

Part #17X124

Replaced by #17X124MA

?
Manufacturer substitution
This part replaces 17X124. Substitute parts can look different from the original.
This item is not returnable
$7.37
In Stock
Stop Bracket 43628BC
#14

Handle diagram

Stop bracket

Part #43628BC

Replaced by #1101454E701MA

?
Manufacturer substitution
This part replaces 43628BC. Substitute parts can look different from the original.
$29.69
In Stock
Lock Nut 15X84
#13

Engine diagram

Lock nut

Part #15X84

Replaced by #703893

?
Manufacturer substitution
This part replaces 15X84. Substitute parts can look different from the original.
This item is not returnable
$11.29 | 
15% OFF Phone Price : $13.29
In Stock
Washer .34-1 17X146
#22

Engine diagram

Washer .34-1

Part #17X146

Replaced by #17X146MA

?
Manufacturer substitution
This part replaces 17X146. Substitute parts can look different from the original.
$9.34
In Stock
Hgt Adj 20rb 672600
#19

Engine diagram

Hgt adj 20rb

Part #672600

Replaced by #672600MA

?
Manufacturer substitution
This part replaces 672600. Substitute parts can look different from the original.
$106.28
In Stock
Hgt Adj 20rb 672605
#4

Engine diagram

Hgt adj 20rb

Part #672605

Replaced by #672605MA

?
Manufacturer substitution
This part replaces 672605. Substitute parts can look different from the original.
$33.69
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

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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