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Troybilt
Gas Line Trimmer

Model # TB425CS Official Troybilt 4-cycle gas trimmer

Here are the diagrams and repair parts for Official Troybilt TB425CS 4-cycle gas trimmer, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 135 parts  |
Strap Clip 791-610327
#14

Boom and trimmer diagram

Strap clip

Part #791-610327

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

Ring 791-182295
#84

Engine parts diagram

Ring

Part #791-182295

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

Hex Nut 791-181034
#18

Engine parts diagram

Hex nut

Part #791-181034

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

Clamp 791-181812
#9

Boom and trimmer diagram

Clamp

Part #791-181812

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

Guide 791-611061
#50

Engine parts diagram

Guide

Part #791-611061

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

Screw 791-181046
#41

Engine parts diagram

Screw

Part #791-181046

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

Gasket 791-182345
#16

Engine parts diagram

Gasket

Part #791-182345

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

Trigger 753-04119
#2

Boom and trimmer diagram

Trigger

Part #753-04119

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

Spring 791-181038
#11

Engine parts diagram

Spring

Part #791-181038

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

Clamp Assembly 753-1190
#16

Boom and trimmer diagram

Clamp assembly

Part #753-1190

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

Symptoms for gas line trimmers

Choose a symptom to see related grass line trimmer repairs.

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Why does my gas line trimmer run rough?

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

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Why won't my gas line trimmer start?

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

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Why does my gas line trimmer leak gas?

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

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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.

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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…

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Repair difficulty
Time required
 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 …

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Repair difficulty
Time required
 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…

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Repair difficulty
Time required
 15 minutes or less

Articles and videos for gas line trimmers

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

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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.…

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Solving 3 common problems with line trimmer cutting lines

Solving 3 common problems with line trimmer cutting lines

Follow these tips to prevent the cutting line on your grass line trimmer from breaking or feeding out too much or too li…

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How to replace a line trimmer fuel line video

How to replace a line trimmer fuel line video

Follow the steps in this video to replace a leaking fuel line in a line trimmer.…

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