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Troybilt TB4000 trimmer Parts

Here are the diagrams and repair parts for Troybilt TB4000 trimmer, as well as links to manuals and error code tables, if available.

Troybilt TB4000 trimmer
By Schematic
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Browse Parts for TB4000 Line Trimmers

  • Oil Seal for Troybilt TB4000 - Part 182142

    Engine parts diagram

    Oil Seal

    Part #182142

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

  • Pulley Assembly for Troybilt TB4000 - Part 182118

    Engine parts diagram

    Pulley Assembly

    Part #182118

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

  • Snap Ring for Troybilt TB4000 - Part 182128

    Engine parts diagram

    Snap Ring

    Part #182128

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

  • Cam Bracket Assembly (includes 26-29) for Troybilt TB4000 - Part 182125

    Engine parts diagram

    Cam Bracket Assembly (includes 26-29)

    Part #182125

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

  • Retaining Ring for Troybilt TB4000 - Part 181747

    Engine parts diagram

    Retaining Ring

    Part #181747

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

  • Crankshaft for Troybilt TB4000 - Part 182139

    Engine parts diagram

    Crankshaft

    Part #182139

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

  • 4-tooth Blade for Troybilt TB4000 - Part 49M5873L063

    Boom and trimmer diagram

    4-tooth Blade

    Part #49M5873L063

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

  • Gasket for Troybilt TB4000 - Part 182099

    Engine parts diagram

    Gasket

    Part #182099

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

  • Spacer for Troybilt TB4000 - Part 181731

    Engine parts diagram

    Spacer

    Part #181731

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

  • Retainer Kit for Troybilt TB4000 - Part 180014

    #NI10

    All parts diagram

    Retainer Kit

    Part #180014

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

Most common symptoms to help you fix your line trimmers

Choose a symptom to see related grass line trimmer repairs.

Main causes: stale fuel, cracked fuel lines, dirty carburetor, bad spark plug, worn piston rings…

Main causes: cracked fuel lines, bad carburetor seals, leaky fuel tank cap, damaged fuel tank…

Main causes: stale fuel, clogged fuel filter, faulty spark plug, clogged air filter, cracked fuel lines, clogged carbure…

Repair guides for gas line trimmers

These step-by-step repair guides will help you safely fix what’s broken on your grass line trimmer.

How to rebuild a line trimmer carburetor

How to rebuild a line trimmer carburetor

If the line trimmer engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow…

Repair time and Difficulty

 15 minutes or less
How to replace a line trimmer fuel line

How to replace a line trimmer fuel line

The fuel line on a grass line trimmer deteriorates with time and eventually can split or crack. You can replace it yours…

Repair time and Difficulty

 15 minutes or less
How to replace a line trimmer carburetor

How to replace a line trimmer carburetor

If the line trimmer won't start even though there's fuel in the tank, the carburetor could be the problem. Follow these …

Repair time and Difficulty

 15 minutes or less

Effective articles & videos to help repair your line trimmers

Use the advice and tips in these articles and videos to get the most out of your grass line trimmer.

Line trimmer: Preventing fuel vapor lock in hot summer conditions

Line trimmer: Preventing fuel vapor lock in hot summer conditions

Vapor lock can stop your trimmer cold in summer heat. Learn how to prevent it and keep your lawn looking sharp…

Straight shaft vs curved shaft trimmers: What’s the difference?

Straight shaft vs curved shaft trimmers: What’s the difference?

Trying to decide between a straight shaft and curved shaft trimmer? This guide compares both designs to help you underst…

Can you cut grass with a weed whacker?

Can you cut grass with a weed whacker?

Wondering if your weed whacker can pick up the slack for your broken lawn mower? You're not alone. In this guide, we bre…

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