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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  |
Arbor Shaft UP04699
#9

Blower attachment diagram

Arbor shaft

Part #UP04699

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

Lead UP04536
#5

Ignition/rotor/starter/clutch diagram

Lead

Part #UP04536

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

Truss Hd S UP04247
#28

Ignition/rotor/starter/clutch diagram

Truss hd s

Part #UP04247

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

Flat Washer UP04241
#7

Ignition/rotor/starter/clutch diagram

Flat washer

Part #UP04241

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

Trigger UP03207
#24

Ignition/rotor/starter/clutch diagram

Trigger

Part #UP03207

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

Retainer S UP06907
#19

Trimmer attachment diagram

Retainer s

Part #UP06907

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

Slotted Hex UP04569
#21

Edger attachment diagram

Slotted hex

Part #UP04569

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

Gear Case UP06866
Gear case

Part #UP06866

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

Bumper UP03501
#12

Carburetor/fuel tank diagram

Bumper

Part #UP03501

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

Cylinder UP07145
#4

Engine internal (ut20811/811b diagram

Cylinder

Part #UP07145

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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