Troybilt
Gas Walk-Behind Mower

Model #TRAILBLAZER Y0000100 AND UP Official Troybilt sickle bar lawn mower

Here are the diagrams and repair parts for Troybilt TRAILBLAZER-Y0000100-AND-UP sickle bar lawn mower, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Search within this model
Parts List

Showing 10 of 190 parts

Washer#41

Cutter bar drive mechanism, engine oil drain tube Diagram

Washer

Part #9929

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

Tiller Clevis Pin#4

Wheel drive mechanism/wheels Diagram

Clevis pin

Part #9380
Replaced by #711-04126
?
Manufacturer substitution
This part replaces 9380. Substitute parts can look different from the original.
This item is not returnable
In Stock
$6.69
Lawn & Garden Equipment Nut#13

Handlebars, control levers, and throttle lever Diagram

Lock nut

Part #9811
Replaced by #712-0324
?
Manufacturer substitution
This part replaces 9811. Substitute parts can look different from the original.
This item is not returnable
In Stock
$4.72 | 
17% OFF 
Phone Price: $5.72
Lawn & Garden Equipment Cotter Pin#3

Wheel drive mechanism/wheels Diagram

Cotter pin

Part #9338
Replaced by #714-04048
?
Manufacturer substitution
This part replaces 9338. Substitute parts can look different from the original.
In Stock
$12.97
Tiller Retainer Ring#37

Wheel drive mechanism/wheels Diagram

Retainer, snap ring

Part #9511
Replaced by #716-04104
?
Manufacturer substitution
This part replaces 9511. Substitute parts can look different from the original.
This item is not returnable
In Stock
$5.69
Wheel Bearing#35

Wheel drive mechanism/wheels Diagram

Shim

Part #1166-1
Replaced by #094908P
?
Manufacturer substitution
This part replaces 1166-1. Substitute parts can look different from the original.
In Stock
$11.97
Tiller Tire (replaces 734-0808, 734-0808-0901)#6

Wheel drive mechanism/wheels Diagram

Tire

Part #1234-1
Replaced by #734-0808A
?
Manufacturer substitution
This part replaces 1234-1. Substitute parts can look different from the original.
Back Order
$100.06 | 
29% OFF 
MSRP: $140.00
Lawn & Garden Equipment Flat Washer#28

Wheel drive mechanism/wheels Diagram

Washer

Part #50043
Replaced by #736-04304
?
Manufacturer substitution
This part replaces 50043. Substitute parts can look different from the original.
This item is not returnable
In Stock
$7.09
Lawn & Garden Equipment Flange Lock Nut

See All Related Diagrams

Hex nut

Part #9831
Replaced by #1186393
?
Manufacturer substitution
This part replaces 9831. Substitute parts can look different from the original.
This item is not returnable
In Stock
$4.86
Tie

See All Related Diagrams

Tie

Part #9266

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

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade
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: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent
Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel
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 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 cracked.

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged.

Repair difficulty
Time required
 15 minutes or less
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 replace this tiny but essential part.

Repair difficulty
Time required
 45 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.

February 11, 2023

Top 10 electric lawn and garden tools for 2023

Top 10 electric lawn and garden tools for 2023

Learn about the top 10 must-have electric lawn & garden tools for 2023

August 30, 2022

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.

August 11, 2022

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