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Murray
Gas Walk-Behind Mower

Model # MX4N22S Official Murray rotary lawn mower

Here are the diagrams and repair parts for Official Murray MX4N22S rotary 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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Model diagram and schematic

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Showing 10 of 17 parts  |
Frigidaire Lawn Mower Discharge Chute Hinge Rod (replaces 532160833, 5321608-33) 160833
#37

Rotary mower diagram

Frigidaire lawn mower discharge chute hinge rod (replaces 532160833, 5321608-33)

Part #160833

This item is not returnable
$3.09 | 
24% OFF Phone Price : $4.09
In Stock
Kit.hsg.22.e 403060
#1

Rotary mower diagram

Kit.hsg.22.e

Part #403060

The manufacturer no longer makes this part, and there's no substitute part

Engine, Briggs & Stratton, Model #120k02 N/P
#26

Rotary mower diagram

Engine, briggs & stratton, model #120k02

Part #N/P

The manufacturer no longer makes this part, and there's no substitute part

Control Box 194177X428
#2

Rotary mower diagram

Control box

Part #194177X428

The manufacturer no longer makes this part, and there's no substitute part

Lock Washer 850263
#31

Rotary mower diagram

Lock washer

Part #850263

The manufacturer no longer makes this part, and there's no substitute part

Powder Spacer 400341
#43

Rotary mower diagram

Powder spacer

Part #400341

The manufacturer no longer makes this part, and there's no substitute part

Bracket Support 401219X479
#42

Rotary mower diagram

Bracket support

Part #401219X479

The manufacturer no longer makes this part, and there's no substitute part

Complete Bracket Assembly 401234X479
#35

Rotary mower diagram

Complete bracket assembly

Part #401234X479

The manufacturer no longer makes this part, and there's no substitute part

Shoulder Bolt 400342
#44

Rotary mower diagram

Shoulder bolt

Part #400342

The manufacturer no longer makes this part, and there's no substitute part

Warning Decal 162300

#NI01

All parts diagram

Warning decal

Part #162300

The manufacturer no longer makes this part, and there's no substitute part

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.…

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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.…

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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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