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Husqvarna
Rear-Engine Riding Mower

Model # ZTHQL4221A (968999172) Official Husqvarna riding lawn mower

Here are the diagrams and repair parts for Official Husqvarna ZTHQL4221A-968999172 riding lawn mower, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 282 parts  |
Lawn & Garden Equipment Flat Washer 539990692
Lawn & garden equipment flat washer

Part #539990692

Replaced by #596134901

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Manufacturer substitution
This part replaces 539990692. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Lawn Tractor Washer 539990122
#21

Park brake diagram

Lawn tractor washer

Part #539990122

Replaced by #596565301

?
Manufacturer substitution
This part replaces 539990122. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.16
In Stock
Lawn Tractor Fuel Tank (replaces 5391044-09) 539104409
#2A

Main frame diagram

Lawn tractor fuel tank (replaces 5391044-09)

Part #539104409

BEST SELLER
$149.66 | 
6% OFF Phone Price : $159.66
In Stock
Lawn Tractor Caster Wheel Spacer 539105543
#25

Main frame diagram

Lawn tractor caster wheel spacer

Part #539105543

This item is not returnable
$12.89 | 
13% OFF Phone Price : $14.89
In Stock
Lawn Tractor Nut 539990585
#23

Motion control diagram

Lawn tractor nut

Part #539990585

Replaced by #596039201

?
Manufacturer substitution
This part replaces 539990585. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Lawn Tractor Nut 539976978
Lawn tractor nut

Part #539976978

Replaced by #582478602

?
Manufacturer substitution
This part replaces 539976978. Substitute parts can look different from the original.
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Lawn Tractor Steering Damper (replaces 5391027-20) 539102720
#26

Motion control diagram

Lawn tractor steering damper (replaces 5391027-20)

Part #539102720

$45.10 | 
10% OFF Phone Price : $50.10
In Stock
Lawn Tractor Decal (replaces 85463) 539913010
Lawn tractor decal (replaces 85463)

Part #539913010

This item is not returnable
$3.13
In Stock
Pivot Bushing 539103427
Pivot bushing

Part #539103427

This item is not returnable
$4.06
Back Order
Hcs.3/8-16.x 539990563
Hcs.3/8-16.x

Part #539990563

Replaced by #596564401

?
Manufacturer substitution
This part replaces 539990563. Substitute parts can look different from the original.
This item is not returnable
$2.16
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 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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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 does my riding mower creep in neutral?

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

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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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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 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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How do I charge a dead battery on my riding mower?

Main causes: faulty battery, bad alternator…

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Most common repair guides to help fix your riding mowers & tractors

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How to replace the seat on a riding lawn mower

A broken seat can keep the mower from running.…

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Repair difficulty
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Help your mower run better by replacing the fuel filter during your riding mower's annual tune-up.…

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How to replace a riding lawn mower rear tire

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