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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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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual
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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

Lawn Mower Transmission Assembly 106-3956
Lawn mower transmission assembly

Part #106-3956

$125.99 | 
7% OFF Phone Price : $135.99
In Stock
Rope Guide 106-8330
#6

Handle assembly diagram

Rope guide

Part #106-8330

$9.40
In Stock
Decal 114-0321
#6

Deck/side chute/rear door diagram

Decal

Part #114-0321

$25.38
In Stock
Coup Hose 112-6401
#37

Deck/side chute/rear door diagram

Coup hose

Part #112-6401

This item is not returnable
$4.40
In Stock
Retainger 108-9779
#12

Rear axle/transmission diagram

Retainger

Part #108-9779

$24.97
In Stock
Lawn Mower Control Handle 104-8678
#10

Handle assembly diagram

Lawn mower control handle

Part #104-8678

$103.72
In Stock
Warning Decal 105-1295
#19:2

Deck/side chute/rear door diagram

Warning decal

Part #105-1295

This item is not returnable
$4.49
In Stock
Gear Gasket 108-9756
Gear gasket

Part #108-9756

This item is not returnable
$2.16
In Stock
Washout Port 112-6400
#36

Deck/side chute/rear door diagram

Washout port

Part #112-6400

$8.46
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 run rough?

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

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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 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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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 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 move?

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

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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 replace a lawn mower spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

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

How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged. …

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Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

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Repair difficulty
Time required
 45 minutes or less

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

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