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Husqvarna
Rear-Engine Riding Mower

Model # MZ5425S Official Husqvarna riding lawn mower

Here are the diagrams and repair parts for Official Husqvarna MZ5425S riding 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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Showing 10 of 328 parts  |
Craftsman Lawn Tractor Shoulder Bolt 539107608
#38

Mower deck / cutting deck diagram

Craftsman lawn tractor shoulder bolt

Part #539107608

Replaced by #596434404

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Manufacturer substitution
This part replaces 539107608. Substitute parts can look different from the original.
BEST SELLER
$6.64 | 
13% OFF Phone Price : $7.64
In Stock
Hinge Rod 539110462
#26

Mower deck / cutting deck diagram

Hinge rod

Part #539110462

Replaced by #595297001

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Manufacturer substitution
This part replaces 539110462. Substitute parts can look different from the original.
BEST SELLER
$7.05 | 
12% OFF Phone Price : $8.05
In Stock
Nut.9/16.top 539107590
#45

Mower deck / cutting deck diagram

Nut.9/16.top

Part #539107590

Replaced by #596134801

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Manufacturer substitution
This part replaces 539107590. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Lawn Tractor Washer 539990118
#22

Hydraulic pump-motor diagram

Lawn tractor washer

Part #539990118

Replaced by #596238701

?
Manufacturer substitution
This part replaces 539990118. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Lawn Tractor Washer 539990122
Lawn tractor washer

Part #539990122

Replaced by #596565301

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Manufacturer substitution
This part replaces 539990122. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.11
In Stock
Lawn Tractor Parking Brake Switch 539113792
#5

Ignition diagram

Lawn tractor parking brake switch

Part #539113792

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$19.98 | 
9% OFF Phone Price : $21.98
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Lawn Tractor Nut 539976978
Lawn tractor nut

Part #539976978

Replaced by #582478602

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Manufacturer substitution
This part replaces 539976978. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.64 | 
27% OFF Phone Price : $3.64
In Stock
Craftsman Lawn Tractor Seat Spring 539110300
#10

Seat diagram

Craftsman lawn tractor seat spring

Part #539110300

Replaced by #587613301

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Manufacturer substitution
This part replaces 539110300. Substitute parts can look different from the original.
BEST SELLER
$7.98 | 
11% OFF Phone Price : $8.98
In Stock
Pulley 539112171
#5

Mower deck / cutting deck diagram

Pulley

Part #539112171

Replaced by #532173436

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Manufacturer substitution
This part replaces 539112171. Substitute parts can look different from the original.
BEST SELLER
$23.71
In Stock
Roller Rod 539107613
#25

Mower deck / cutting deck diagram

Roller rod

Part #539107613

Replaced by #594092501

?
Manufacturer substitution
This part replaces 539107613. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$7.98 | 
11% OFF Phone Price : $8.98
In Stock

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Why won't my riding mower start?

Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clo…

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Why is the steering loose on my riding mower?

Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…

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Why does my riding mower creep in neutral?

Main causes: shift lever needs adjustment, neutral control needs adjustment…

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Why does my riding mower run rough or misfire?

Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a…

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Why won't my riding mower move?

Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, …

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Why is my riding mower not cutting evenly?

Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tun…

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