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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

  • Riding Lawn Mower Grille for Craftsman 9178420 - Part 4356H

    Steering assembly diagram

    Riding Lawn Mower Grille

    Part #4356H

    The manufacturer no longer makes this part, and there's no substitute part

  • Screw for Craftsman 9178420 - Part 17901007

    Screw

    Part #17901007

    The manufacturer no longer makes this part, and there's no substitute part

  • Pivot Link for Craftsman 9178420 - Part 4322H1

    Main frame diagram

    Pivot Link

    Part #4322H1

    The manufacturer no longer makes this part, and there's no substitute part

  • Rest Pad for Craftsman 9178420 - Part 4378H

    Main frame diagram

    Rest Pad

    Part #4378H

    The manufacturer no longer makes this part, and there's no substitute part

  • Screw for Craftsman 9178420 - Part 17510505

    Steering assembly diagram

    Screw

    Part #17510505

    The manufacturer no longer makes this part, and there's no substitute part

  • Ring for Craftsman 9178420 - Part 792017

    Transmission diagram

    Ring

    Part #792017

    The manufacturer no longer makes this part, and there's no substitute part

  • Washer for Craftsman 9178420 - Part 09111116

    Generator diagram

    Washer

    Part #09111116

    The manufacturer no longer makes this part, and there's no substitute part

  • Washer for Craftsman 9178420 - Part 19171911

    Steering assembly diagram

    Washer

    Part #19171911

    The manufacturer no longer makes this part, and there's no substitute part

  • Grip for Craftsman 9178420 - Part 5029H

    Steering assembly diagram

    Grip

    Part #5029H

    The manufacturer no longer makes this part, and there's no substitute part

  • Briggs And Stratton Kit-carb Overhaul for Craftsman 9178420 - Part 792006

    Transmission diagram

    Briggs And Stratton Kit-carb Overhaul

    Part #792006

    The manufacturer no longer makes this part, and there's no substitute part

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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