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Murray
Gas Walk-Behind Mower

Model # 20646X9A Official Murray lawn mower

Here are the diagrams and repair parts for Official Murray 20646X9A 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 86 parts  |
Nut 15X116
#5

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 71495
#66

Engine diagram

Wing nut

Part #71495

Replaced by #1501260MA

?
Manufacturer substitution
This part replaces 71495. Substitute parts can look different from the original.
$10.93 | 
15% OFF Phone Price : $12.93
In Stock
Wing Nut 71294
#13

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
#48

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
Washer .51-1 17X120
#43

Engine diagram

Washer .51-1

Part #17X120

Replaced by #703128

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Manufacturer substitution
This part replaces 17X120. Substitute parts can look different from the original.
This item is not returnable
$6.31
In Stock
Pinion Gear 71792
#24

Engine diagram

Pinion gear

Part #71792

Replaced by #71792MA

?
Manufacturer substitution
This part replaces 71792. Substitute parts can look different from the original.
$26.38
In Stock
Dustcover 8" 71780
#44

Engine diagram

Dustcover 8"

Part #71780

Replaced by #71780MA

?
Manufacturer substitution
This part replaces 71780. Substitute parts can look different from the original.
$10.74
In Stock
Bolt 2X16
#51

Engine diagram

Bolt

Part #2X16

Replaced by #2X16MA

?
Manufacturer substitution
This part replaces 2X16. Substitute parts can look different from the original.
This item is not returnable
$7.06
In Stock
Retainer 28X64
#67

Engine diagram

Retainer

Part #28X64

Replaced by #703297

?
Manufacturer substitution
This part replaces 28X64. Substitute parts can look different from the original.
This item is not returnable
$6.71
In Stock
Belt Jackson 37X84
#28

Engine diagram

Belt jackson

Part #37X84

Replaced by #37X84MA

?
Manufacturer substitution
This part replaces 37X84. Substitute parts can look different from the original.
$15.46
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 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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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. …

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

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Repair difficulty
Time required
 45 minutes or less

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