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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20646X9A Walk-Behind Mowers
Wing Nut 71495
#66

Engine diagram

Wing nut

Part #71495

Replaced by #1501260MA

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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
Screw 26X263
#30

Engine diagram

Screw

Part #26X263

Replaced by #26X263MA

?
Manufacturer substitution
This part replaces 26X263. Substitute parts can look different from the original.
This item is not returnable
In Stock
Washer .51-1 17X120
#43

Engine diagram

Washer .51-1

Part #17X120

Replaced by #703128

?
Manufacturer substitution
This part replaces 17X120. Substitute parts can look different from the original.
This item is not returnable
In Stock
Lock Nut 15X84
#41

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
Bolt 2X53
#21

Engine diagram

Bolt

Part #2X53

Replaced by #703159

?
Manufacturer substitution
This part replaces 2X53. Substitute parts can look different from the original.
This item is not returnable
In Stock
Tapping Screw 26X245
#65

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
Washer 17X91
#62

Engine diagram

Washer

Part #17X91

Replaced by #17X91MA

?
Manufacturer substitution
This part replaces 17X91. Substitute parts can look different from the original.
In Stock
Lock Nut 15X88
#56

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
In Stock
Thrust Washer 17X169
#40

Engine diagram

Thrust washer

Part #17X169

Replaced by #703966

?
Manufacturer substitution
This part replaces 17X169. Substitute parts can look different from the original.
In Stock

Symptoms for gas walk-behind mowers

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

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

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

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.

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.…

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.…

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.…

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.

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.…

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.…

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.…