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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
  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 46-8091
Screw

Part #46-8091

$7.51
In Stock
Half Pulley 100-1176
Half pulley

Part #100-1176

$16.31
In Stock
Shroud Decal 112-8874
#11:3

Engine & blade assembly diagram

Shroud decal

Part #112-8874

$66.53
In Stock
Lawn Mower Muffler Guard 106-8346-03
#14

Engine & blade assembly diagram

Lawn mower muffler guard

Part #106-8346-03

$22.78
In Stock
Washer Screw 46-6810
#22

Deck/side chute/rear door diagram

Washer screw

Part #46-6810

This item is not returnable
$7.29
In Stock
Lawn Mower End Cap 112-6439
#6

Rear bag assembly diagram

Lawn mower end cap

Part #112-6439

This item is not returnable
$3.43
In Stock
Bevel Gear 104-8671
#6

Transmission assembly diagram

Bevel gear

Part #104-8671

$52.04
In Stock

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Symptoms for gas walk-behind mowers

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

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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

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