Gas Walk-Behind Mower

Model # 20028 (9900001 & UP) Official Toro lawn mower

Here are the diagrams and repair parts for Official Toro 20028 (9900001 & UP) lawn mower, as well as links to manuals and error code tables, if available.

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Browse Parts for
20028 (9900001 & UP) Walk-Behind Mowers
Lawn Mower Washer 614426
#11

Gear case/wheel diagram

Lawn mower washer

Part #614426

This item is not returnable
In Stock
Bushing 27-6250
#9:4

Gear case/wheel diagram

Bushing

Part #27-6250

This item is not returnable
In Stock
Toro Bail-traction 99-1571-03
#7

Handle & controls diagram

Toro bail-traction

Part #99-1571-03

In Stock
Toro Lawn Mower Drive Cable 99-1586
#9

Handle & controls diagram

Toro lawn mower drive cable

Part #99-1586

In Stock
Toro Lawn Mower Gear Pinion 65-4750
#14

Gear case/wheel diagram

Toro lawn mower gear pinion

Part #65-4750

In Stock
Toro Spacer-axle Shaft 614447
#2

Gear case/wheel diagram

Toro spacer-axle shaft

Part #614447

This item is not returnable
In Stock
Toro Compression Spring 65-4720
#13

Gear case/wheel diagram

Toro compression spring

Part #65-4720

This item is not returnable
In Stock
Toro Lawn Mower Thrust Washer 65-4740
#4

Gear case/wheel diagram

Toro lawn mower thrust washer

Part #65-4740

This item is not returnable
In Stock
Washer 36-4780
#6

Gear case diagram

Washer

Part #36-4780

In Stock
Toro Lawn Mower Wheel Assembly 92-9591
#25

Housing/handle brackets/wheel diagram

Toro lawn mower wheel assembly

Part #92-9591

In Stock

Symptoms for gas walk-behind mowers

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

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

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

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

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

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

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

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.

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…

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

How to replace a lawn mower drive cable

The drive cable engages the transmission to spin the drive wheels and move the mower across the grass. Replace the drive…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower starter rope

How to replace a lawn mower starter rope

These step-by-step instructions show how to replace a broken starter pull rope on a walk-behind lawn mower.…

Repair difficulty
Time required
 30 minutes or less

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

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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Top questions about Sears and Sears PartsDirect

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