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Toro
Rear-Engine Riding Mower

Model # 74373 (290004013 AND UP) Official Toro riding lawn mower

Here are the diagrams and repair parts for Official Toro 74373-290004013-AND-UP riding lawn mower, as well as links to manuals and error code tables, if available.

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Owner’s manual
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Model diagram and schematic

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ALL PARTS
Showing 10 of 457 parts  |
Stop Nut 3296-29
Stop nut

Part #3296-29

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

Lawn Tractor Starter Solenoid 117-1197
#8

Electrical assembly diagram

Lawn tractor starter solenoid

Part #117-1197

$68.80
In Stock
Spring 92-7054
#6

Seat assembly diagram

Spring

Part #92-7054

$30.96
In Stock
Lawn Tractor Transaxle Breather Tube 112-9866
Lawn tractor transaxle breather tube

Part #112-9866

$88.16
In Stock
Lawn Tractor Blade Idler Pulley Arm 114-8540
#6

50" deck spindle & blade diagram

Lawn tractor blade idler pulley arm

Part #114-8540

$32.69
In Stock
Decal 106-8743
#20

Deck lift & seat support diagram

Decal

Part #106-8743

This item is not returnable
$4.29
In Stock
Idler Spring 63-1590
#11

Hydro drive assembly diagram

Idler spring

Part #63-1590

$28.91
In Stock
Lawn Tractor Ground Drive Belt, 1/2 X 62-1/4-in 110-6774
#10

Hydro drive assembly diagram

Lawn tractor ground drive belt, 1/2 x 62-1/4-in

Part #110-6774

$40.64
In Stock
Plate Washer 104-5304
Plate washer

Part #104-5304

$239.29
In Stock
Decal Panel 115-2500
#3

Styling & fuel system assembly diagram

Decal panel

Part #115-2500

$35.42
In Stock

RECOMMENDED MAINTENANCE PARTS AND ACCESSORIES

  • Key 63-8360
    Key
    $8.46

Most common symptoms to help you fix your riding mowers & tractors

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

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Why is my riding mower not cutting evenly?

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

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Why won't my riding mower start?

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

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Why is the steering loose on my riding mower?

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

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How do I fix a flat tire on my riding mower?

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

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Why won't my riding mower cut grass?

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

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How do I charge a dead battery on my riding mower?

Main causes: faulty battery, bad alternator…

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Why does my riding mower deck vibrate?

Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components…

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Why does my riding mower creep in neutral?

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

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Why won't my riding mower move?

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

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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.

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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…

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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.…

Read more
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.…

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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.

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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.…

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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.…

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Riding mower and tractor common questions

Riding mower and tractor common questions

You might find the answers to your questions about your riding mower or lawn tractor in this list of frequently asked qu…

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