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Troybilt TB90BC 2-cycle gas trimmer/brushcutter Parts

Here are the diagrams and repair parts for Troybilt TB90BC 2-cycle gas trimmer/brushcutter, as well as links to manuals and error code tables, if available.

Troybilt TB90BC 2-cycle gas trimmer/brushcutter
By Schematic
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This is the number corresponding to the part on the diagram / schematic

Browse Parts for TB90BC Line Trimmers

  • Adjustment Knob for Troybilt TB90BC - Part 791-181981

    Handle/throttle housing/shield diagram

    Adjustment Knob

    Part #791-181981

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

  • Palnut:3/8" for Troybilt TB90BC - Part 753-04348

    Handle/throttle housing/shield diagram

    Palnut:3/8"

    Part #753-04348

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

  • Clamp for Troybilt TB90BC - Part 791-181814

    Handle/throttle housing/shield diagram

    Clamp

    Part #791-181814

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

  • Washer for Troybilt TB90BC - Part 791-182368

    Engine parts diagram

    Washer

    Part #791-182368

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

  • Flywheel for Troybilt TB90BC - Part 791-182736

    Engine parts diagram

    Flywheel

    Part #791-182736

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

  • Spring for Troybilt TB90BC - Part 791-181599

    #NI05

    All parts diagram

    Spring

    Part #791-181599

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

  • Bolt for Troybilt TB90BC - Part 791-147575

    Engine parts diagram

    Bolt

    Part #791-147575

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

  • Cover Assembly for Troybilt TB90BC - Part 753-1192

    Engine parts diagram

    Cover Assembly

    Part #753-1192

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

  • Nut 8pk for Troybilt TB90BC - Part 791-181886

    Handle/throttle housing/shield diagram

    Nut 8pk

    Part #791-181886

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

  • Retainer for Troybilt TB90BC - Part 791-612026

    Handle/throttle housing/shield diagram

    Retainer

    Part #791-612026

    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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