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Homelite
Gas Line Trimmer

Model # UT20811B Official Homelite gas line trimmer

Here are the diagrams and repair parts for Official Homelite UT20811B gas line trimmer, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 165 parts  |
Line Trimmer Blade UP04119
#19

Shaft/deflector (ut2081/811a) diagram

Line trimmer blade

Part #UP04119

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

Washer UP04129
#9

Edger attachment diagram

Washer

Part #UP04129

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

Screw UP04236
#30

Shaft/deflector (ut20811b) diagram

Screw

Part #UP04236

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

Cutting Head UP06912
#15

Trimmer attachment diagram

Cutting head

Part #UP06912

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

Lock Washer UP04123
#11

Blower attachment diagram

Lock washer

Part #UP04123

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

Spark Plug UP03883
#3

Ignition/rotor/starter/clutch diagram

Spark plug

Part #UP03883

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

Piston UP06937
#2

Engine internal (ut20811a) diagram

Piston

Part #UP06937

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

Tubing UP04715
#10

Carburetor/fuel tank diagram

Tubing

Part #UP04715

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

Screw UP04256
#13

Shaft/deflector (ut2081/811a) diagram

Screw

Part #UP04256

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

Piston Ring UP06938
#3

Engine internal (ut20811a) diagram

Piston ring

Part #UP06938

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 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 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 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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Top 10 electric lawn and garden tools for 2023

Learn about the top 10 must-have electric lawn & garden tools for 2023…

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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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Grass line trimmer maintenance checklist

Grass line trimmer maintenance checklist

Find out how to take care of your grass line trimmer from the start of the trimming season until the end, with this help…

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