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Homelite
Gas Line Trimmer

Model # UT20621 Official Homelite line trimmer

Here are the diagrams and repair parts for Official Homelite UT20621 line trimmer, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 167 parts  |
Instruction Decal 04458
Instruction decal

Part #04458

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

Switch Button 06618
#19

Muffler kit diagram

Switch button

Part #06618

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

Key 69250
#7

Muffler kit diagram

Key

Part #69250

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

Washer 83061
Washer

Part #83061

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

(ut-04005) Eagle (no.67) (name 5-15r, Single) N/P
#1

Complete starter diagram

(ut-04005) eagle (no.67) (name 5-15r, single)

Part #N/P

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

Rotor & St A04158
#2

Complete starter diagram

Rotor & st

Part #A04158

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

Screw 82540
#31

Muffler kit diagram

Screw

Part #82540

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

Short Block A07135
#1B

Muffler kit diagram

Short block

Part #A07135

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

Cylinder Kit A07145
#4B

Muffler kit diagram

Cylinder kit

Part #A07145

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

Piston Rod UP00768
#2B

Muffler kit diagram

Piston rod

Part #UP00768

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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