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Toro
Gas Walk-Behind Mower

Model # 20073 Official Toro lawn mower

Here are the diagrams and repair parts for Official Toro 20073 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 230 parts  |
Stop Nut 3296-29
Stop nut

Part #3296-29

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

Pinion Gear 105-3040
Pinion gear

Part #105-3040

This item is not returnable
$7.71
In Stock
Lawn-boy Lawn Mower Screw 95-1726
#6

Engine & blade assembly diagram

Lawn-boy lawn mower screw

Part #95-1726

This item is not returnable
$3.74
In Stock
Screw 105-6849
#15

Front axle assembly diagram

Screw

Part #105-6849

This item is not returnable
$2.16
In Stock
Washer Seal 112-6438
#38

Deck/side chute/rear door diagram

Washer seal

Part #112-6438

This item is not returnable
$2.97
In Stock
Cap Screw 322-6
Cap screw

Part #322-6

This item is not returnable
$2.16
In Stock
Decal-danger 94-8072
#1

Housing assembly diagram

Decal-danger

Part #94-8072

$12.43
In Stock
Shaft-outpt 106-3957
#7

Transmission assembly diagram

Shaft-outpt

Part #106-3957

$109.14
In Stock
Decal 114-0338
#11

Handle assembly diagram

Decal

Part #114-0338

$24.60
In Stock
Thrust Washer 105-6840
Thrust washer

Part #105-6840

This item is not returnable
$3.80
In Stock

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Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

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Why does my lawn mower stall?

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

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Why won't my lawn mower start?

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

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Why does my lawn mower cut unevenly?

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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Why won't my lawn mower move?

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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Why does my lawn mower run rough?

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

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How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

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Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your walk-behind mowers

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Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them.…

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