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Homelite
Gas Line Trimmer

Model # UT20774 Official Homelite trimmer/brushcutter

Here are the diagrams and repair parts for Official Homelite UT20774 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  |
Lead UP04690
Lead

Part #UP04690

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

Strap UP00108
Strap

Part #UP00108

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

Filter UP03871
#8

Carburetor/fuel tank diagram

Filter

Part #UP03871

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

Air Filter D98760B
Air filter

Part #D98760B

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

Screw UP04345
#9

Engine internal diagram

Screw

Part #UP04345

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

Air Baffle UP03013
Air baffle

Part #UP03013

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

Retainer UP00104
#22

Shaft/spool/string/grass deflector diagram

Retainer

Part #UP00104

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

Head String DA03001A
Head string

Part #DA03001A

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

Washer UP03906
Washer

Part #UP03906

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

Short Block UP02994
Short block

Part #UP02994

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

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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