Husqvarna
Rear-Engine Riding Mower

Model # ZTHQL4218A (968999170) Official Husqvarna riding lawn mower

Here are the diagrams and repair parts for Official Husqvarna ZTHQL4218A-968999170 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

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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
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
Pivot Bushing 539103427
Pivot bushing

Part #539103427

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
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

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

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

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

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

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

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: 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 starter motor on a riding lawn mower

How to replace the starter motor on a riding lawn mower

If you hear the solenoid click but don’t hear the starter motor spin when you turn the key, follow these steps to replac…

Repair difficulty
Time required
 30 minutes or less
How to rebuild a riding lawn mower carburetor

How to rebuild a riding lawn mower carburetor

Get your sputtering carburetor running smoothly in 60 minutes.…

Repair difficulty
Time required
 60 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.

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.…

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.…