Troybilt
Gas Walk-Behind Mower

Model #34021 Troybilt walk-behind lawn mower

Here are the diagrams and repair parts for Troybilt 34021 walk-behind lawn mower, as well as links to manuals and error code tables, if available.


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Save to my profileOwner’s manual

    Showing 10 of 136 parts

    SCREW

    #36

    Engines, mower deck and blade assemblies Diagram

    Screw

    Part #710-04460
    ?
    Manufacturer substitution
    This part replaces 1767754. Substitute parts can look different from the original.
    This part replaces 1767754
    This item is not returnable
    $3.51

    In Stock

    Lawn Mower Wheel

    #20

    Cutting height control and wheel assemblies Diagram

    Lawn mower wheel

    Part #753-08091
    ?
    Manufacturer substitution
    This part replaces 1765740. Substitute parts can look different from the original.
    This part replaces 1765740
    $29.01 | 
    19% OFF MSRP:$36.00

    In Stock

    Clevis Pin

    #16

    Handlebar and mower controls--models 34020 and 34021 Diagram

    Clevis pin

    Part #911-0813
    ?
    Manufacturer substitution
    This part replaces 1766536. Substitute parts can look different from the original.
    This part replaces 1766536
    This item is not returnable
    $5.24

    In Stock

    Igniter Switch

    #41

    Engines, mower deck and blade assemblies Diagram

    Igniter switch

    Part #1768443
    ?
    Manufacturer substitution
    This part replaces 1768443. Substitute parts can look different from the original.
    This part replaces 1768443
    $42.51

    In Stock

    Scr-set Sq 1

    #24

    Wheel drive assemblies--models 34021, 34022, 34023, 34311 Diagram

    Scr-set sq 1

    Part #1903631
    ?
    Manufacturer substitution
    This part replaces 1103440. Substitute parts can look different from the original.
    This part replaces 1103440
    This item is not returnable
    $2.31 | 
    17% OFF MSRP:$2.80

    In Stock

    Lawn Tractor Cable Tie

    #29

    Handlebar and mower controls--models 34020 and 34021 Diagram

    Lawn tractor cable tie

    Part #726-0178
    ?
    Manufacturer substitution
    This part replaces 1763682. Substitute parts can look different from the original.
    This part replaces 1763682
    This item is not returnable
    $2.11

    In Stock

    Axle Disc Kit

    #28

    Cutting height control and wheel assemblies Diagram

    Axle disc kit

    Part #1903685
    ?
    Manufacturer substitution
    This part replaces 1764383. Substitute parts can look different from the original.
    This part replaces 1764383
    $118.07

    In Stock

    Lawn Mower Drive Pinion Gear

    #26

    Cutting height control and wheel assemblies Diagram

    Lawn mower drive pinion gear

    Part #1764570099
    ?
    Manufacturer substitution
    This part replaces 1764570. Substitute parts can look different from the original.
    This part replaces 1764570
    $7.88 | 
    10% OFF MSRP:$8.80

    In Stock

    Lawn & Garden Equipment Lock Nut

    #29

    Engines, mower deck and blade assemblies Diagram

    Lawn & garden equipment lock nut

    Part #912-3000
    ?
    Manufacturer substitution
    This part replaces 1733398. Substitute parts can look different from the original.
    This part replaces 1733398
    This item is not returnable
    $2.66 | 
    14% OFF MSRP:$3.10

    In Stock

    Tiller Knob

    #28

    Handlebar and mower controls--models 34020 and 34021 Diagram

    Tiller knob

    Part #GW-9057
    ?
    Manufacturer substitution
    This part replaces 9057. Substitute parts can look different from the original.
    This part replaces 9057
    This item is not returnable
    $6.20

    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: uneven wheel height settings, damaged wheel, dull or damaged cutting blade
    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: engine needs tune up, dirty or clogged carburetor, damaged flywheel key
    Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, bad ignition coil

    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 flywheel key on an OHV engine

    The flywheel key couples the flywheel to the engine crankshaft. Replace the flywheel key if it's broken.

    Repair difficulty
    Time required
     60 minutes or less
    April 1, 2013
    By Lyle Weischwill
    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.

    Repair difficulty
    Time required
     15 minutes or less
    April 1, 2013
    By Lyle Weischwill
    How to replace a lawn mower safety switch

    The safety switch stops the engine when you release the lever on the handle. This repair guide explains how to replace it if it's not working correctly.

    Repair difficulty
    Time required
     30 minutes or less

    Articles and videos common to all walk-behind mowers

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

    October 1, 2019

    Types of walk-behind mower blades video

    By Sears PartsDirect staff

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