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Husqvarna
Rear-Engine Riding Mower

Model # RZ4219 Official Husqvarna tractor

Here are the diagrams and repair parts for Official Husqvarna RZ4219 tractor, 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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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 331 parts  |
Mulching Blade 777134149
#13

42" deck diagram

Mulching blade

Part #777134149

Replaced by #532134149

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Manufacturer substitution
This part replaces 777134149. Substitute parts can look different from the original.
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Switch 539101768
Switch

Part #539101768

Replaced by #582107601

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Manufacturer substitution
This part replaces 539101768. Substitute parts can look different from the original.
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Craftsman Lawn Tractor Shoulder Bolt 539107608
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.
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Ignition.swi 539107541
Ignition.swi

Part #539107541

Replaced by #532175566

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Manufacturer substitution
This part replaces 539107541. Substitute parts can look different from the original.
$28.29
In Stock
Hinge Rod 539110462
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.
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Nut.9/16.top 539107590
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.
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$5.31 | 
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Lawn Tractor Muffler (replaces 188655, 5321886-55, 580532301) 532188655
#33

Engine plate-965881201 diagram

Lawn tractor muffler (replaces 188655, 5321886-55, 580532301)

Part #532188655

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Lawn Tractor Washer 539990118
#10

Hydraulic pump-motor diagram

Lawn tractor washer

Part #539990118

Replaced by #596238701

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Manufacturer substitution
This part replaces 539990118. Substitute parts can look different from the original.
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This item is not returnable
$5.31 | 
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Lawn Mower Blade 777405380
#4

46" deck diagram

Lawn mower blade

Part #777405380

Replaced by #532405380

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Manufacturer substitution
This part replaces 777405380. Substitute parts can look different from the original.

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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.
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Why does my riding mower deck vibrate?

Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components…

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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 won't my riding mower cut grass?

Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…

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How do I fix a flat tire on my riding mower?

Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…

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Why is my riding mower leaking oil or gas?

Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, …

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

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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 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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