Troybilt
Gas Walk-Behind Mower

Model #TRAILBLAZER Y0000100 AND UP Troybilt sickle bar lawn mower

Here are the repair parts and diagrams for your Troybilt TRAILBLAZER-Y0000100-AND-UP sickle bar lawn mower. 

The diagram(s) below can help you find the right part.  If you’d like help, we invite you to call our customer service number at the top of the page, or click chat.

On this page, you can also find any manuals, installation guides and error code tables associated with this model.

For advice on diagnosing problems with appliances, lawn & garden equipment and other products, check out the videos, repair guides and articles in our DIY section.

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Showing 10 of 190 parts

Lawn & Garden Equipment Flange Lock Nut

#10

Wheel drive mechanism/wheels Diagram

Lawn & garden equipment flange lock nut

Part #1186393
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  9831
This part replaces 9831
This item is not returnable

$2.49

In Stock

Lawn & Garden Equipment Cotter Pin

#3

Wheel drive mechanism/wheels Diagram

Lawn & garden equipment cotter pin

Part #714-04048
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  9338
This part replaces 9338
This item is not returnable

$5.59

In Stock

Flat Washer, 8-pack

#41

Cutter bar drive mechanism, engine oil drain tube Diagram

Flat washer, 8-pack

Part #STD551031
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  9929
This part replaces 9929
This item is not returnable

$3.04

In Stock

Screw-hfkl

#14

Wheel drive mechanism/wheels Diagram

Screw-hfkl

Part #1186349
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  90047
This part replaces 90047
This item is not returnable

$2.29

In Stock

Tiller Hex Bolt

#1

Chassis components, drive arm, cutter bar support Diagram

Tiller hex bolt

Part #710-04049
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  90038
This part replaces 90038
This item is not returnable

$2.78

In Stock

Wheel Bearing

#35

Wheel drive mechanism/wheels Diagram

Wheel bearing

Part #094908P
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  1166-1
This part replaces 1166-1

$12.49

In Stock

Battery

#3

Electric start items Diagram

Battery

Part #GW-96508099
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  96508
This part replaces 96508

$233.85

In Stock

Washer

#9

Cutter bar assembly Diagram

Washer

Part #736-0567
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  P406389
This part replaces P406389
This item is not returnable

$2.31

In Stock

Lawn & Garden Equipment Pop Rivet

#15

Cutter bar assembly Diagram

Lawn & garden equipment pop rivet

Part #GW-P404962099
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  P404962
This part replaces P404962
This item is not returnable

$2.71

In Stock

Lawn & Garden Equipment Foam Handle Grip

#7

Handlebars, control levers, and throttle lever Diagram

Lawn & garden equipment foam handle grip

Part #720-0274
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  9126
This part replaces 9126
This item is not returnable

$6.69

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.

March 1, 2016
By Lyle Weischwill
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 cable if it's broken or frozen up inside the sheath.

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.