Husqvarna
Rear-Engine Riding Mower

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

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

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Owner’s manual

    Showing 10 of 337 parts

    Lawn Tractor Self-Tapping Bolt

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    Washer screw

    Part #539107630
    Replaced by #584953901
    ?
    Manufacturer substitution
    This part replaces 539107630. Substitute parts can look different from the original.
    BEST SELLER
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    In Stock
    $3.29 | 
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    Phone Price: $4.29
    Lawn Tractor Mandrel Pulley#9

    Mower deck/cutting deck-52" deck Diagram

    Pulley

    Part #539112171
    Replaced by #173436
    ?
    Manufacturer substitution
    This part replaces 539112171. Substitute parts can look different from the original.
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    $12.41 | 
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    MSRP: $25.00
    Lawn Tractor Bolt and Washer

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    Bolt, 7/16, spec

    Part #539107522
    Replaced by #193003
    ?
    Manufacturer substitution
    This part replaces 539107522. Substitute parts can look different from the original.
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    $7.69 | 
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    Phone Price: $8.69
    Lawn Tractor Spacer Washer

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    Spacer washer

    Part #539107520
    Replaced by #187690
    ?
    Manufacturer substitution
    This part replaces 539107520. Substitute parts can look different from the original.
    BEST SELLER
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    $2.99 | 
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    MSRP: $4.69
    Lawn & Garden Equipment Washer

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    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
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    In Stock
    $2.19 | 
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    Phone Price: $3.19
    Lawn Tractor Blade Idler Pulley

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    Idler pulley

    Part #539107620
    Replaced by #596481401
    ?
    Manufacturer substitution
    This part replaces 539107620. Substitute parts can look different from the original.
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    Phone Price: $29.19
    Lawn Tractor Gauge Wheel

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    Gauge wheel

    Part #539107610
    Replaced by #133957
    ?
    Manufacturer substitution
    This part replaces 539107610. Substitute parts can look different from the original.
    BEST SELLER
    In Stock
    $13.69 | 
    28% OFF 
    MSRP: $19.00
    Lawn Tractor Deck Roller

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    Roller nose

    Part #532176066
    Replaced by #176066
    ?
    Manufacturer substitution
    This part replaces 532176066. Substitute parts can look different from the original.
    BEST SELLER
    This item is not returnable
    In Stock
    $7.29 | 
    12% OFF 
    Phone Price: $8.29
    Lawn & Garden Equipment Lock Nut

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    Lawn tractor nut

    Part #539976978
    Replaced by #595086601
    ?
    Manufacturer substitution
    This part replaces 539976978. Substitute parts can look different from the original.
    BEST SELLER
    This item is not returnable
    In Stock
    $1.49 | 
    40% OFF 
    Phone Price: $2.49
    Lawn Tractor Parking Brake Switch#7

    Electrical Diagram

    Lawn tractor parking brake switch

    Part #539113792
    BEST SELLER
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    In Stock
    $10.39 | 
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    Phone Price: $12.39

    Symptoms common to all riding mowers & tractors

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

    Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim
    Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, dirty carburetor
    Main causes: shift lever needs adjustment, neutral control needs adjustment
    Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged mandrel pulleys
    Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components
    Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, broken fuel line
    Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a tune up
    Main causes: faulty battery, bad alternator
    Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tune up

    Repair guides common to all riding mowers & tractors

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

    January 1, 2015
    By Lyle Weischwill
    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
    January 1, 2015
    By Lyle Weischwill
    How to replace a riding lawn mower blade

    If a blade on your mower is dull or bent, replace it following the steps in this repair guide.

    Repair difficulty
    Time required
     30 minutes or less
    January 1, 2015
    By Lyle Weischwill
    How to replace a riding lawn mower fuel filter

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

    Repair difficulty
    Time required
     15 minutes or less

    Articles and videos common to all 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.

    August 5, 2022

    Introducing new technical repair content that we’re developing for the Sears Technical Institute

    By Lyle Weischwill

    Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.

    August 6, 2020

    How to remove a lawn mower blade using a removal tool

    By Lyle Weischwill

    Learn how a blade removal tool makes replacing the blade easier and safer

    April 9, 2019

    Riding mower parts and supplies to stock up on video

    By Lyle Weischwill

    Keep these 6 things on hand to keep the mower season running smoothly.