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Troybilt
Gas Walk-Behind Mower

Model # 34020 Official Troybilt walk-behind lawn mower

Here are the diagrams and repair parts for Official Troybilt 34020 walk-behind 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 111 parts  |
Cable Tie 1763682
#29

Handlebar and mower controls diagram

Cable tie

Part #1763682

Replaced by #726-0178

?
Manufacturer substitution
This part replaces 1763682. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Lock Washer 9914
#24

Engines, mower deck and blade assemblies diagram

Lock washer

Part #9914

Replaced by #736-0921

?
Manufacturer substitution
This part replaces 9914. Substitute parts can look different from the original.
This item is not returnable
$7.17
In Stock
Hex Nut 9807
#14

Cutting height control and wheel assemblies diagram

Hex nut

Part #9807

Replaced by #712-0375

?
Manufacturer substitution
This part replaces 9807. Substitute parts can look different from the original.
This item is not returnable
$5.91
In Stock
Nut 1766514
#10

Engines, mower deck and blade assemblies diagram

Nut

Part #1766514

Replaced by #912-0273

?
Manufacturer substitution
This part replaces 1766514. Substitute parts can look different from the original.
This item is not returnable
$7.40
In Stock
Arm 1902280
#33

Cutting height control and wheel assemblies diagram

Arm

Part #1902280

Replaced by #1902280

?
Manufacturer substitution
This part replaces 1902280. Substitute parts can look different from the original.
$58.72
In Stock
Washer 9904
#33

Engines, mower deck and blade assemblies diagram

Washer

Part #9904

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

Quadrant 1767425
#4

Handlebar and mower controls diagram

Quadrant

Part #1767425

Replaced by #1903404099

?
Manufacturer substitution
This part replaces 1767425. Substitute parts can look different from the original.
$14.97
In Stock
Axle Arm 1764820
#15

Cutting height control and wheel assemblies diagram

Axle arm

Part #1764820

Replaced by #1902280

?
Manufacturer substitution
This part replaces 1764820. Substitute parts can look different from the original.
$58.72
In Stock
Screw 1767754
#36

Engines, mower deck and blade assemblies diagram

Screw

Part #1767754

Replaced by #710-04460

?
Manufacturer substitution
This part replaces 1767754. Substitute parts can look different from the original.
This item is not returnable
$7.29
In Stock
Cover 1768954
#5

Engines, mower deck and blade assemblies diagram

Cover

Part #1768954

Replaced by #956-04183

?
Manufacturer substitution
This part replaces 1768954. Substitute parts can look different from the original.
$109.69
In Stock

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

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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Tapping into a new feature in the Search Bar on Sears PartsDirect

Tapping into a new feature in the Search Bar on Sears PartsDirect

Learn about a new feature added to the Search Bar on Sears PartsDirect…

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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

Top questions about Sears and Sears PartsDirect

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