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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.
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
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
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
Whl 8x1.75 D 672080
#28

Engine diagram

Whl 8x1.75 d

Part #672080

Replaced by #336545MA

?
Manufacturer substitution
This part replaces 672080. Substitute parts can look different from the original.
$44.59 | 
12% OFF Phone Price : $50.59
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
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
Tapping Screw 26X245
#31

Engine diagram

Tapping screw

Part #26X245

Replaced by #26X245MA

?
Manufacturer substitution
This part replaces 26X245. Substitute parts can look different from the original.
This item is not returnable
$6.74 | 
13% OFF Phone Price : $7.74
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

Symptoms for gas walk-behind mowers

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

View all

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 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 vibrate a lot?

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

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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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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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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 replace a lawn mower spark plug

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…

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Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower blade

How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged. …

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

Read more
Repair difficulty
Time required
 45 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

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

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Introducing new technical repair content that we’re developing for the Sears Technical Institute

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