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 # UT20784 Official Homelite trimmer/brushcutter

Here are the diagrams and repair parts for Official Homelite UT20784 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  |
Guardblade UP05070
#25

Shaft/spool/string/grass deflector diagram

Guardblade

Part #UP05070

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

Spacer UP04118
Spacer

Part #UP04118

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

Gasket UP03916
Gasket

Part #UP03916

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

Form Screw UP03898
Form screw

Part #UP03898

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

Gasket UP04308
Gasket

Part #UP04308

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

Start Grip UP03026
Start grip

Part #UP03026

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

Screw UP03896
Screw

Part #UP03896

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

Fuel Cap UP00106
#12

Carburetor/fuel tank diagram

Fuel cap

Part #UP00106

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

Clamp Spring UP03913
#15

Carburetor/fuel tank diagram

Clamp spring

Part #UP03913

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 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 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 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
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…

Read more
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.…

Read more
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.…

Read more

Parts & More