Models > TB21EC

TB21EC Troy-Bilt Trimmer

Jump to:

Find Part by Name

Keep searches simple, eg. "belt" or "pump".
Keep searches simple, eg. "belt" or "pump".
Trimmer Carburetor – Part Number: 753-06190
$49.52
A carburetor basically consists of an open pipe through which the air passes into the inlet manifold of the engine. The pipe is in the form of a Venturi: it narrows in section and then widens again, ...
In Stock
Order now and your part arrives by Mar 19
Trimmer Bump Head Knob – Part Number: 791-153066B
$20.40
This bump knob assembly fits lawn and gardening tools, usually trimmers. This part bumps on the ground to advance the cutting line from the spool. With time and use, this part can wear out easily. It ...
In Stock
Order now and your part arrives by Mar 19
Throttle Trigger – Part Number: 753-04119
$11.48
This is a genuine OEM replacement throttle trigger (red). The throttle trigger is responsible for managing the speed of the engine. The throttle cable attaches to the trigger, which connects to the th...
In Stock
Order now and your part arrives by Mar 19
Line Trimmer Spool – Part Number: 753-1155
$28.89
This spool is for line trimmers. Spool houses the cutting line and fits inside the cutting head to cut grass and weeds. Wear work gloves to protect your hands when installing this part.
Special Order
Clutch Asm Small – Part Number: 753-05860
$35.80
Genuine OEM replacement kit used on Gas Trimmers and Tillers. This part includes: Clutch Drum, Clutch, Clutch Washer and the Screw which has a left-handed thread. A centrifugal clutch is a part that u...
In Stock
Order now and your part arrives by Mar 19
Spring-spool – Part Number: 791-610317B
$16.57
Genuine OEM replacement part, this item is sold individually. This spring is used on all of the trimmers listed below. It is installed between the inner reel and the outer spool assembly. Its purpose...
In Stock
Order now and your part arrives by Mar 19
Carburetor Gasket – Part Number: 753-06253
$6.25
This is an authentic Craftsman replacement part that has been sourced from the original manufacturer to be used with trimmers and blowers. The gasket is used to seal the connection between the carbure...
In Stock
Order now and your part arrives by Mar 19
Carburetor O-ring – Part Number: 753-06185
$6.25
This is a manufacturer approved O-Ring designed for lawn and garden equipment. This is the O-Ring that provides an Air Tight seal between Carburetor and Cylinder Head. If doing maintenance on carburet...
In Stock
Order now and your part arrives by Mar 19
Air Filter – Part Number: 753-06085
$6.25
This air filter is an original sourced directly from Craftsman. The filters purpose is to keep dirt, dust and other contaminants from entering the carburetor and engine. You can clean this foam filter...
In Stock
Order now and your part arrives by Mar 19
Fuel Tank Asm – Part Number: 753-06250
$33.67
This is a genuine part that is supplied by the original manufacturer for use with Craftsman trimmers. The fuel tank stores the gasoline used to power the trimmer. This part is made of plastic and is s...
In Stock
Order now and your part arrives by Mar 19
Upper Drive Shaft Housing Assm – Part Number: 753-04344
$96.25
This is a genuine OEM sourced replacement part designed for use with string trimmers. This item is made out of metal and it is sold individually. It is the upper shaft that is attached to the motor. ...
In Stock
Order now and your part arrives by Mar 19
Aircleaner Cover Assembly (includes 26) – Part Number: 753-06191
$2.99
This is a Genuine OEM replacement part used on specific Gas Trimmers. This Aircleaner Cover is made out of Plastic with Metal Bushings. This Assembly includes Two (2) Metal Screws used to attach it. T...
Special Order
View More

Questions and Answers

Be the first to ask our experts a question about this part!

Common Problems and Symptoms for TB21EC

Viewing 4 of 4
Will Not Start
Fixed by these parts
Fixing
How to fix it
Engine stops after a few seconds or minutes
Fixed by these parts
Fixing
How to fix it
Cutting line does not come out
Fixed by these parts
Fixing
How to fix it
Engine revs but trimmer head will not turn
Fixed by these parts
Fixing
How to fix it
Replacing the Upper Drive Shaft Housing Assm

Replacing the Upper Drive Shaft Housing Assm

Replacing the Trimmer Exhaust Gasket

Replacing the Trimmer Exhaust Gasket

View More
Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Customer:
john from SHARPSVILLE, PA
Parts Used:
753-06253, 753-06190
Difficulty Level:
Really Easy
Total Repair Time:
15 - 30 mins
string trimmer would not start
emptied fuel from tank. pulled off the 2 fuel lines from the carburetor.opened the air cleaner door. removed the 2 torque screws that hold on the carburetor. removed the carburetor and air cleaner gasket. installed new carburetor and gasket and put back and tightened the 2 torque screws. closed air cleaner door and pushed the fuel lines o nto the new carburetor.put some fuel in the tank. started the trimmer. runs great.
Read less
6 of 8 people found this instruction helpful.
Was this instruction helpful to you?
Thank you for voting!
Customer:
Ricardo from FORT WORTH, TX
Parts Used:
753-06253, 753-06185, 753-06190
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers
Trimmer Would Not Start
The replacement of the carburetor, O-ring, and gasket was simple. I removed 2 screws that held the air cleaner and carburetor in place, swapped them out, and replaced the screws. What took longest was finding a piece of fuel line after breaking one of them. It was brittle after hanging in my garage for several years. I found some in my garage and replaced it. It took a few pulls to get it started, but ran very smooth.

Additional information: rather than mixing my fuel, I purchased 40:1 pre-mix fuel to prevent gunking up the carburetor in the future. I use it in my other trimmer and have not had any issues.
Read less
3 of 4 people found this instruction helpful.
Was this instruction helpful to you?
Thank you for voting!
Customer:
Anthony from HEARTLAND, TX
Parts Used:
753-06253, 753-06191, 753-06085
Difficulty Level:
Very Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Broken air cleaner
remove two screws holding old air cleaner housing to carburetor and manifold. The carburetor will come off but don't worry as long as gasket does not tear. line up new housing, put the 2 new screws in and tighten. put new filter in and the new cover on and done
3 of 4 people found this instruction helpful.
Was this instruction helpful to you?
Thank you for voting!
View More