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Model # UT20811 Official Homelite gas line trimmer
Here are the diagrams and repair parts for Official Homelite UT20811 gas line trimmer, as well as links to manuals and error code tables, if available.
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UT20811 Line Trimmers
Gasket
Part #UP03916
The manufacturer no longer makes this part, and there's no substitute part
Cover
Part #UP00019
The manufacturer no longer makes this part, and there's no substitute part
#4
Edger attachment diagram
Screw
Part #UP05572
The manufacturer no longer makes this part, and there's no substitute part
#14
Carburetor/fuel tank diagram
Clamp spring
Part #UP03913
The manufacturer no longer makes this part, and there's no substitute part
#11
Edger attachment diagram
Edger blade
Part #UP06765
The manufacturer no longer makes this part, and there's no substitute part
#7
Blower attachment diagram
Arbor adapter
Part #UP04713
The manufacturer no longer makes this part, and there's no substitute part
#29
Shaft/deflector (ut20811b) diagram
Nut hex 12
Part #UP06864
The manufacturer no longer makes this part, and there's no substitute part
#AA
Muffler/air cleaner diagram
Muffler kit
Part #UP06340
The manufacturer no longer makes this part, and there's no substitute part
Driveshaft
Part #UP06903
The manufacturer no longer makes this part, and there's no substitute part
#C
Ignition/rotor/starter/clutch diagram
Ignition module
Part #UP05270
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.
Main causes: stale fuel, clogged fuel filter, faulty spark plug, clogged air filter, cracked fuel lines, clogged carbure…
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…
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.

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.

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Follow these tips to prevent the cutting line on your grass line trimmer from breaking or feeding out too much or too li…

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