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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
Pin 1766536
#16

Handlebar and mower controls diagram

Pin

Part #1766536

Replaced by #911-0813

?
Manufacturer substitution
This part replaces 1766536. Substitute parts can look different from the original.
$10.50 | 
16% OFF Phone Price : $12.50
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.
$7.71
In Stock
Clip 1765550
#12

Cutting height control and wheel assemblies diagram

Clip

Part #1765550

Replaced by #1765550

?
Manufacturer substitution
This part replaces 1765550. Substitute parts can look different from the original.
$19.74
In Stock
Pinion 1764570
#26

Cutting height control and wheel assemblies diagram

Pinion

Part #1764570

Replaced by #1764570099

?
Manufacturer substitution
This part replaces 1764570. Substitute parts can look different from the original.
$19.63
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.
$7.94
In Stock
Lock Nut 1733398
#29

Engines, mower deck and blade assemblies diagram

Lock nut

Part #1733398

Replaced by #912-3000

?
Manufacturer substitution
This part replaces 1733398. Substitute parts can look different from the original.
This item is not returnable
$6.17
In Stock
Shim 1902284
#24A

Cutting height control and wheel assemblies diagram

Shim

Part #1902284

Replaced by #1902284

?
Manufacturer substitution
This part replaces 1902284. Substitute parts can look different from the original.
$19.63
In Stock
Wheel 1765740
#20

Cutting height control and wheel assemblies diagram

Wheel

Part #1765740

Replaced by #753-08091

?
Manufacturer substitution
This part replaces 1765740. Substitute parts can look different from the original.
$53.88 | 
10% OFF Phone Price : $59.88
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
$6.37
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 vibrate a lot?

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

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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 run rough?

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

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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 stall?

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

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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 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 recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Read more
Repair difficulty
Time required
 15 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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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.…

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them.…

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