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

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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.
BEST SELLER
This item is not returnable
$6.24 | 
14% OFF Phone Price : $7.24
In Stock
20" Blade 671921E701
#17

Engine diagram

20" blade

Part #671921E701

Replaced by #672763E701MA

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

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$34.71
In Stock
Bolt 25X6
#20

Engine diagram

Bolt

Part #25X6

Replaced by #817000616

?
Manufacturer substitution
This part replaces 25X6. Substitute parts can look different from the original.
$10.26
In Stock
Bolt 1X153
#16

Engine diagram

Bolt

Part #1X153

Replaced by #1X153MA

?
Manufacturer substitution
This part replaces 1X153. Substitute parts can look different from the original.
This item is not returnable
$7.34
In Stock
C'bolt 2X77
#3

Handle diagram

C'bolt

Part #2X77

Replaced by #2X77MA

?
Manufacturer substitution
This part replaces 2X77. Substitute parts can look different from the original.
This item is not returnable
$6.69
In Stock
Lock Nut 15X88
#23

Engine diagram

Lock nut

Part #15X88

Replaced by #704067

?
Manufacturer substitution
This part replaces 15X88. Substitute parts can look different from the original.
This item is not returnable
$6.46
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
Washer 17X38
#10

Engine diagram

Washer

Part #17X38

Replaced by #17X38MA

?
Manufacturer substitution
This part replaces 17X38. Substitute parts can look different from the original.
This item is not returnable
$6.86
In Stock
Bag 20rb Ds 672714
#3A

Frame and bag assembly diagram

Bag 20rb ds

Part #672714

Replaced by #24201MA

?
Manufacturer substitution
This part replaces 672714. Substitute parts can look different from the original.
$176.24
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

Symptoms for gas walk-behind mowers

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

View all

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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