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Toro
Gas Walk-Behind Mower

Model # 20017 Official Toro lawn mower

Here are the diagrams and repair parts for Official Toro 20017 lawn mower, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 115 parts  |
Stop Nut 3296-29
Stop nut

Part #3296-29

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

Thrust Washer 105-6840
#6

Rear axle/transmission diagram

Thrust washer

Part #105-6840

This item is not returnable
$3.60
In Stock
Decal-dang 105-6838
#5:1

Housing assembly diagram

Decal-dang

Part #105-6838

$9.40
In Stock
Spring 39-9650
#14

Rear axle/transmission diagram

Spring

Part #39-9650

This item is not returnable
$5.51
In Stock
Lawn Mower Control Handle 104-8678
#10

Handle assembly diagram

Lawn mower control handle

Part #104-8678

$103.72
In Stock
Guide-lh 105-6842
#15

Handle assembly diagram

Guide-lh

Part #105-6842

$15.49
In Stock
Lawn Mower Bolt 3229-11
Lawn mower bolt

Part #3229-11

This item is not returnable
$2.20
In Stock
Lawn Mower Blade Support 108-3766-03
#3

Engine & blade assembly diagram

Lawn mower blade support

Part #108-3766-03

$19.89
In Stock
Screw 105-6849
#15

Front axle & wheel assembly diagram

Screw

Part #105-6849

This item is not returnable
$2.16
In Stock
Lawn Mower Knob 105-3042
Lawn mower knob

Part #105-3042

This item is not returnable
$5.51
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 move?

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

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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 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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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 transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

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Repair difficulty
Time required
 60 minutes or less
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.…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower ignition coil on a flathead engine

How to replace a lawn mower ignition coil on a flathead engine

If the spark plug doesn't fire when you try to start the mower, you could have a defective ignition coil. Follow these s…

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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.

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