Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
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.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 141 parts  |
Hex Head B UP04154
#2

Shaft/spool/string/grass deflector diagram

Hex head b

Part #UP04154

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

Shaft Assembly UP00710
Shaft assembly

Part #UP00710

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

Hex Head Cap UP04158
#3

Shaft/spool/string/grass deflector diagram

Hex head cap

Part #UP04158

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

Line Trimmer Spool Spring 06713
#19

Shaft/spool/string/grass deflector diagram

Line trimmer spool spring

Part #06713

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

Check Lever UP04740
#6B

Carburetor/fuel tank diagram

Check lever

Part #UP04740

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

Handle UP06959
Handle

Part #UP06959

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

Lead UP03174
Lead

Part #UP03174

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

Screw UP04082
#8

Muffler/air cleaner diagram

Screw

Part #UP04082

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

Muffler UP04634
Muffler

Part #UP04634

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.

View all

Why won't my gas line trimmer start?

Main causes: stale fuel, cracked fuel lines, dirty carburetor, bad spark plug, worn piston rings…

Read more

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…

Read more

Why does my gas line trimmer leak gas?

Main causes: cracked fuel lines, bad carburetor seals, leaky fuel tank cap, damaged fuel tank…

Read more

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.

View all
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…

Read more
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.

View all
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…

Read more
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.…

Read more
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…

Read more

Parts & More