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Craftsman 9178420 heavy-duty riding unit

Craftsman 9178420 heavy-duty riding unit Parts

Here are the diagrams and repair parts for Craftsman 9178420 heavy-duty riding unit, as well as links to manuals and error code tables, if available.

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Browse Parts for 9178420 Riding Mowers & Tractors

  • Carrier for Craftsman 9178420 - Part 774028A

    Transmission diagram

    Differential Carrier

    Part #774028

    Replaced by #774028A

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    Manufacturer substitution
    This part replaces 774028. Substitute parts can look different from the original.
    In Stock
    $87.93
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  • Spring for Craftsman 9178420 - Part 792003

    Transmission diagram

    Spring

    Part #792003

    Replaced by #792003

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    Manufacturer substitution
    This part replaces 792003. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $4.37
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  • Craftsman Lawn & Garden Equipment Transmission Dowel Pin for Craftsman 9178420 - Part 786026B

    Transmission diagram

    Pin

    Part #786026

    Replaced by #786026B

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    Manufacturer substitution
    This part replaces 786026. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $5.37
    16% OFF Phone Price : $6.37Info Icon
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  • Lawn & Garden Equipment Bearing for Craftsman 9178420 - Part 780055

    Transmission diagram

    Bearing

    Part #780055

    Replaced by #780055

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    Manufacturer substitution
    This part replaces 780055. Substitute parts can look different from the original.
    In Stock
    $24.51
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  • Shifter Rod for Craftsman 9178420 - Part 784055

    Transmission diagram

    Shiftr Rod

    Part #784055

    Replaced by #784055

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    Manufacturer substitution
    This part replaces 784055. Substitute parts can look different from the original.
    In Stock
    $17.86
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  • Craftsman Lawn Tractor Front Tire for Craftsman 9178420 - Part 532122075

    Main frame diagram

    Tire

    Part #6032H

    Replaced by #532122075

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    Manufacturer substitution
    This part replaces 6032H. Substitute parts can look different from the original.
    In Stock
    $51.06
    27% OFF Was : $69.87Info Icon
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  • Idler Gear for Craftsman 9178420 - Part 778037

    Transmission diagram

    Gear

    Part #778037

    Replaced by #778037

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    Manufacturer substitution
    This part replaces 778037. Substitute parts can look different from the original.
    In Stock
    $53.09
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  • Pipe Plug for Craftsman 9178420 - Part 792010

    Transmission diagram

    Plug

    Part #792010

    Replaced by #792010

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    Manufacturer substitution
    This part replaces 792010. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $4.37
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    Qty
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  • Husqvarna Lawn Tractor Washer for Craftsman 9178420 - Part 596238701

    Main frame diagram

    Lock Washer

    Part #10040600

    Replaced by #596238701

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    Manufacturer substitution
    This part replaces 10040600. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $4.73
    17% OFF Phone Price : $5.73Info Icon
    Minus Item
    Qty
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  • Craftsman Lawn Tractor Quad Ring for Craftsman 9178420 - Part 792001

    Transmission diagram

    Ring

    Part #792001

    Replaced by #792001

    Info Icon
    Manufacturer substitution
    This part replaces 792001. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $4.37
    Minus Item
    Qty
    Plus Item

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

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

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

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

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

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

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

Main causes: faulty battery, bad alternator…

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

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 solenoid on a riding lawn mower

How to replace the starter solenoid on a riding lawn mower

Replace the starter solenoid if it doesn't click when you turn the ignition key.…

Repair time and Difficulty

 30 minutes or less
How to replace a riding lawn mower ignition coil

How to replace a riding lawn mower ignition coil

If you're not getting spark from a good spark plug, the problem could be the ignition coil. Follow these step-by-step in…

Repair time and Difficulty

 30 minutes or less
How to replace a riding lawn mower fuel filter

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 time and Difficulty

 15 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.…

Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

Jump-starting a riding lawn mower battery video

Jump-starting a riding lawn mower battery video

Learn how to connect cables safely to jump-start your mower’s battery.…

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