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Toro
Rear-Engine Riding Mower

Model # 74370 (280000001-290999999) Official Toro riding lawn mower

Here are the diagrams and repair parts for Official Toro 74370-280000001-290999999 riding lawn mower, as well as links to manuals and error code tables, if available.

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Owner’s manual
  View engine

Model diagram and schematic

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ALL PARTS
Showing 10 of 428 parts  |
Stop Nut 3296-29
Stop nut

Part #3296-29

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

Nut 3296-39
Nut

Part #3296-39

This item is not returnable
$4.83
In Stock
Lawn Tractor Transaxle Breather Tube 112-9866
Lawn tractor transaxle breather tube

Part #112-9866

$83.84
In Stock
Decal Transaxle 114-8532
#29

Hydro drive assembly diagram

Decal transaxle

Part #114-8532

$8.80
In Stock
Extension Spring 1-603414
#24

50" deck spindle/belt drive diagram

Extension spring

Part #1-603414

$29.22
In Stock
Stud Dampe 110-6810
#7

Control assembly diagram

Stud dampe

Part #110-6810

$9.49
In Stock
Pin-clevis 60-1730
#18

Seat assembly diagram

Pin-clevis

Part #60-1730

$13.23
In Stock
Lawn Tractor Transaxle Support Bracket, Left 110-6799
#21

Engine & clutch assembly diagram

Lawn tractor transaxle support bracket, left

Part #110-6799

$35.64
In Stock
Spring Block 94-1936
Spring block

Part #94-1936

$15.03
In Stock
Lawn Tractor Deck Hanger Bracket, Left Rear 108-7838
#3

50" deck/side discharge diagram

Lawn tractor deck hanger bracket, left rear

Part #108-7838

$30.42
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.

View all

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 my riding mower leaking oil or gas?

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

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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 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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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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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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Why does my riding mower run rough or misfire?

Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a…

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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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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 seat on a riding lawn mower

How to replace the seat on a riding lawn mower

A broken seat can keep the mower from running.…

Read more
Repair difficulty
Time required
 15 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.…

Read more
Repair difficulty
Time required
 15 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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How to remove a lawn mower blade using a removal tool

How to remove a lawn mower blade using a removal tool

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

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Charging a battery in a riding lawn mower video

Charging a battery in a riding lawn mower video

Learn how to use a battery charger if your mower battery is dead.…

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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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