Husqvarna
Rear-Engine Riding Mower

Model # MZ6128ZT-966613101 Official Husqvarna zero-turn riding lawn mower

Here are the diagrams and repair parts for Official Husqvarna MZ6128ZT-966613101 zero-turn riding lawn mower, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 337 parts  |

Washer Screw 539107630
Washer screw

Part #539107630

Replaced by #584953901

?
Manufacturer substitution
This part replaces 539107630. 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
Craftsman Lawn Tractor Shoulder Bolt 539107608
Craftsman lawn tractor shoulder bolt

Part #539107608

Replaced by #596434404

?
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
Lawn & Garden Equipment Flat Washer 539990692
Lawn & garden equipment flat washer

Part #539990692

Replaced by #596134901

?
Manufacturer substitution
This part replaces 539990692. 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
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 Parking Brake Switch 539113792
#7

Electrical diagram

Lawn tractor parking brake switch

Part #539113792

BEST SELLER
This item is not returnable
$19.98
9% OFF Phone Price : $21.98
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
Pulley 539112171
#9

Mower deck/cutting deck-52" deck diagram

Pulley

Part #539112171

Replaced by #532173436

?
Manufacturer substitution
This part replaces 539112171. Substitute parts can look different from the original.
BEST SELLER
In Stock
Craftsman Lawn Tractor Seat Spring 539110300
#10

Seat diagram

Craftsman lawn tractor seat spring

Part #539110300

Replaced by #587613301

?
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
Roller Rod 532179127
Roller rod

Part #532179127

Replaced by #594092501

?
Manufacturer substitution
This part replaces 532179127. 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
Lawn Tractor Muffler 539131604
Lawn tractor muffler

Part #539131604

$39.98
13% OFF Phone Price : $45.98
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.…