Husqvarna
Rear-Engine Riding Mower

Model # ZTHKH4820A (968999158) Official Husqvarna riding lawn mower

Here are the diagrams and repair parts for Official Husqvarna ZTHKH4820A-968999158 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  |

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.
BEST SELLER
$30.76
16% OFF Phone Price : $36.76
In Stock
Lawn Tractor Screw 539976952
Lawn tractor screw

Part #539976952

Replaced by #596039001

?
Manufacturer substitution
This part replaces 539976952. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$3.98
20% OFF Phone Price : $4.98
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
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.
BEST SELLER
This item is not returnable
$2.64
27% OFF Phone Price : $3.64
In Stock
Lawn Tractor Lock Washer 539990187
#7

Main frame diagram

Lawn tractor lock washer

Part #539990187

Replaced by #596238801

?
Manufacturer substitution
This part replaces 539990187. Substitute parts can look different from the original.
This item is not returnable
In Stock
Craftsman Switch 539101080
Craftsman switch

Part #539101080

$19.98
9% OFF Phone Price : $21.98
In Stock
Lawn Tractor Steering Damper (replaces 5391027-20) 539102720
#26

Motion control diagram

Lawn tractor steering damper (replaces 5391027-20)

Part #539102720

$43.06
12% OFF Phone Price : $49.06
In Stock
Pivot Bushing 539103427
Pivot bushing

Part #539103427

This item is not returnable
In Stock
Lawn Tractor Cotter Pin 539976989
#23

Deck lift diagram

Lawn tractor cotter pin

Part #539976989

Replaced by #596273101

?
Manufacturer substitution
This part replaces 539976989. Substitute parts can look different from the original.
This item is not returnable
In Stock
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
In Stock

Most common symptoms to help you fix your riding mowers & tractors

Choose a symptom to see related riding mower and lawn tractor repairs.

Main causes: faulty battery, bad alternator…

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

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

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

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

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

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

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

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

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

These step-by-step repair guides will help you safely fix what’s broken on your riding mower or lawn tractor.

How to replace the seat switch on a riding lawn mower

How to replace the seat switch on a riding lawn mower

Follow the steps in this guide to install a new riding mower seat switch in about 15 minutes.…

Repair difficulty
Time required
 15 minutes or less
How to replace a riding lawn mower spark plug

How to replace a riding lawn mower spark plug

If the engine is hard to start or if the spark plug electrode is burnt or cracked, take 15 minutes to replace it.…

Repair difficulty
Time required
 15 minutes or less
How to replace a riding lawn mower rear tire

How to replace a riding lawn mower rear tire

Your mower can’t run on a damaged rear tire. Here’s how to install a new one.…

Repair difficulty
Time required
 60 minutes or less

Effective articles & videos to help repair your riding mowers & tractors

Use the advice and tips in these articles and videos to get the most out of your riding mower or lawn tractor.

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.…

Riding lawn mower engine clicks but doesn't turn over video

Riding lawn mower engine clicks but doesn't turn over video

Check the starter solenoid, starter motor, wiring, battery and engine.…

Riding mower and tractor common questions

Riding mower and tractor common questions

You might find the answers to your questions about your riding mower or lawn tractor in this list of frequently asked qu…