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Homelite
Gas Line Trimmer

Model # UT20704 Official Homelite trimmer/brushcutter

Here are the diagrams and repair parts for Official Homelite UT20704 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  |
Nut 93992
#2

Shaft/spool and string diagram

Nut

Part #93992

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

Cover UP00019
#10

Engine internal diagram

Cover

Part #UP00019

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

Short Block UP02994
Short block

Part #UP02994

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

Pulley UP03012
#11

Ignition/rotor/starter diagram

Pulley

Part #UP03012

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

Air Filter D98760B
#5

Muffler and air cleaner diagram

Air filter

Part #D98760B

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

Cable UP03172
#26

Ignition/rotor/starter diagram

Cable

Part #UP03172

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

Retainer DA98866A
#23

Shaft/spool and string diagram

Retainer

Part #DA98866A

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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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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