Troybilt
Gas Line Trimmer

Model #TB15CS Troybilt 2-cycle gas trimmer

Here are the repair parts and diagrams for your Troybilt TB15CS 2-cycle gas trimmer. 

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 78 parts

Line Trimmer Primer Bulb and Hose Assembly

#9

Engine parts Diagram

$15.43

In Stock

Line Trimmer Fuel Line

#17

Engine parts Diagram

Line trimmer fuel line

Part #791-181086
This item is not returnable

$5.25

In Stock

Line Trimmer Fuel Line Assembly

#18

Engine parts Diagram

$10.53

In Stock

Line Trimmer Spool Case and Eyelet

#17

Boom and trimmer parts Diagram

$21.21

In Stock

Line Trimmer Spool Spring

#19

Boom and trimmer parts Diagram

Line trimmer spool spring

Part #791-610317B

$8.51

In Stock

Lawn & Garden Equipment Engine Carburetor Mount Gasket

#12

Engine parts Diagram

$11.63

In Stock

Tiller Clutch Cover Screw

#35

Engine parts Diagram

Tiller clutch cover screw

Part #791-181345
This item is not returnable

$2.96

In Stock

Line Trimmer Drive Shaft Housing

#5

Boom and trimmer parts Diagram

$60.71

In Stock

Line Trimmer Spool Retainer Clip

#18

Boom and trimmer parts Diagram

Line trimmer spool retainer clip

Part #791-610660
This item is not returnable

$3.10

In Stock

Line Trimmer Guard Assembly

#15

Boom and trimmer parts Diagram

$33.51

In Stock

Symptoms for gas 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 carburetor

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.

October 1, 2013
By Lyle Weischwill
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 yourself, following these instructions.

Repair difficulty
Time required
 30 minutes or less
October 1, 2013
By Lyle Weischwill
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 these instructions to do the job in under 30 minutes.

Repair difficulty
Time required
 30 minutes or less
October 1, 2013
By Lyle Weischwill
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 instructions to replace the carburetor in under 30 minutes.

Repair difficulty
Time required
 30 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.

June 1, 2016

Tips for a hard-to-start grass line trimmer

By Sears PartsDirect staff

These tips may help you get your hard-to-start gas line trimmer running.

June 1, 2015

How to replace a line trimmer fuel line video

By Sears PartsDirect staff

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

March 1, 2015

Easy DIY grass line trimmer repairs

By Sears PartsDirect staff

Learn about some very easy do-it-yourself repairs for a grass line trimmer.