Toro
Rear-Engine Riding Mower

Model #74373 (290004013-290999999) Official Toro riding lawn mower

Here are the diagrams and repair parts for Toro 74373-290004013-290999999 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 457 parts

    Cap Screw

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    Cap screw

    Part #323-8
    This item is not returnable
    In Stock
    $3.76
    Lawn & Garden Equipment Wheel Assembly#5

    Frame & castor wheel assembly Diagram

    In Stock
    $250.75
    Lawn Tractor Transaxle Bypass Lever

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    In Stock
    $89.91
    Carriage Bolt#16

    50" deck/side discharge Diagram

    Carriage bolt

    Part #3231-28
    This item is not returnable
    In Stock
    $5.04
    Lock Nut#28

    Hydro drive assembly Diagram

    Lock nut

    Part #112-3982
    This item is not returnable
    In Stock
    $5.78
    Lawn Tractor Transaxle Case#1

    Lh hydro assembly Diagram

    In Stock
    $1502.60
    Idler Spring#11

    Hydro drive assembly Diagram

    Idler spring

    Part #63-1590
    In Stock
    $21.93
    Spindle Housing#22:1

    50" deck spindle & blade Diagram

    Spindle housing

    Part #88-4510
    In Stock
    $109.96
    O-Ring#8

    50" deck/side discharge Diagram

    O-ring

    Part #46-6290
    This item is not returnable
    In Stock
    $2.87
    Nut

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    Nut

    Part #3296-39
    This item is not returnable
    In Stock
    $2.98

    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.