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Homelite
Gas Line Trimmer

Model # UT20738 Official Homelite trimmer/brushcutter

Here are the diagrams and repair parts for Official Homelite UT20738 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 91 parts  |
Lawn & Garden Equipment Screw 82541
#14

Engine internal diagram

Lawn & garden equipment screw

Part #82541

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

Head String DA04591A
#19A

Shaft/spool and string diagram

Head string

Part #DA04591A

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

Head Gear A04836D
#7

Shaft/spool and string diagram

Head gear

Part #A04836D

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

Rotor UP03009
#5

Ignition/rotor/starter diagram

Rotor

Part #UP03009

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

Spl&string UP00147
#22A

Shaft/spool and string diagram

Spl&string

Part #UP00147

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

Cylinder Gasket 04388B
#5

Engine internal diagram

Cylinder gasket

Part #04388B

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

Str Rope 42 9789902
#12

Ignition/rotor/starter diagram

Str rope 42

Part #9789902

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

Screw PS01565
#12

Engine internal diagram

Screw

Part #PS01565

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

Screw 82538
#17

Ignition/rotor/starter diagram

Screw

Part #82538

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

Head A98231A
#20

Shaft/spool and string diagram

Head

Part #A98231A

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…

Read more
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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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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