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Homelite
Gas Line Trimmer

Model # UT20773 Official Homelite trimmer/brushcutter

Here are the diagrams and repair parts for Official Homelite UT20773 trimmer/brushcutter, 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 141 parts  |
Flex Shaft UP03031
Flex shaft

Part #UP03031

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

Pulley UP03012
Pulley

Part #UP03012

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

Screw UP04254
Screw

Part #UP04254

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

Carburetor UP05085
#B2A

Carburetor/fuel tank diagram

Carburetor

Part #UP05085

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

Spool UP00145
Spool

Part #UP00145

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

Carburetor UP04742
#B2

Carburetor/fuel tank diagram

Carburetor

Part #UP04742

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

Slotted Hex UP04155
#8

Shaft/spool/string/grass deflector diagram

Slotted hex

Part #UP04155

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

Nut UP03885
Nut

Part #UP03885

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

Heat Dam UP04348
#3

Carburetor/fuel tank diagram

Heat dam

Part #UP04348

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

Handle UP03113
Handle

Part #UP03113

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 …

Read more
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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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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How to tune up a grass line trimmer video

How to tune up a grass line trimmer video

Tune of your grass line trimmer, following the steps in this video.…

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