Model # 41ADT25C066 Official Troybilt trimmer

Here are the diagrams and repair parts for Official Troybilt 41ADT25C066 trimmer, 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.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

ALL PARTS

Showing 10 of 97 parts |

#25

Engine parts diagram

Rope guide

Part #753-1200

$20.63

In Stock

Qty

Boom and trimmer diagram

Line trimmer handle

Part #791-182167

$102.80

In Stock

Qty

Engine parts diagram

Screw

Part #791-181860

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

#43

Engine parts diagram

Spark plug

Part #791-610311B

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

#21

Boom and trimmer diagram

Bushing

Part #791-181857

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

#32

Boom and trimmer diagram

Plunger

Part #791-18462

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

#29

Engine parts diagram

Plate

Part #753-04417

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

#15

Boom and trimmer diagram

Nut 8pk

Part #791-181886

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

#NI07

All parts diagram

Line

Part #791-180120

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

#16

Boom and trimmer diagram

Housing

Part #791-180340

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.

View all

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…

Why won't my gas line trimmer start?

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

Why does my gas line trimmer leak gas?

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

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.

View all

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 difficulty

Time required

15 minutes or less

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 difficulty

Time required

15 minutes or less

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 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.

View all

Solving 3 common problems with line trimmer cutting lines

Model # 41ADT25C066 Official Troybilt trimmer

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Symptoms for gas line trimmers

Why does my gas line trimmer run rough?

Why won't my gas line trimmer start?

Why does my gas line trimmer leak gas?

Repair guides for gas line trimmers

How to rebuild a line trimmer carburetor

How to replace a line trimmer carburetor

How to replace a line trimmer fuel line

Articles and videos for gas line trimmers

Solving 3 common problems with line trimmer cutting lines

How to replace a line trimmer fuel line video

How to tune up a grass line trimmer video

Parts & More

Stay Connected

Quick links

Let us help you

More resources