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Model # UT20777 Official Homelite string trimmer/brushcutter
Here are the diagrams and repair parts for Official Homelite UT20777 string trimmer/brushcutter, as well as links to manuals and error code tables, if available.
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UT20777 Line Trimmers
Retainer
Part #DA98866A
The manufacturer no longer makes this part, and there's no substitute part
#19
Carburetor/fuel tank diagram
Bumper
Part #UP03501
The manufacturer no longer makes this part, and there's no substitute part
#2
Carburetor/fuel tank diagram
Screw
Part #UP04131
The manufacturer no longer makes this part, and there's no substitute part
Pulley
Part #UP03012
The manufacturer no longer makes this part, and there's no substitute part
#9
Engine internal diagram
Screw
Part #UP04345
The manufacturer no longer makes this part, and there's no substitute part
Handle
Part #A07159
The manufacturer no longer makes this part, and there's no substitute part
#21
Shaft/spool/string/grass deflector diagram
Form screw
Part #UP03898
The manufacturer no longer makes this part, and there's no substitute part
#8
Ignition/rotor/starter diagram
Flat washer
Part #UP04241
The manufacturer no longer makes this part, and there's no substitute part
#11
Engine internal diagram
Gasket
Part #UP04335
The manufacturer no longer makes this part, and there's no substitute part
Ignition kit
Part #A07174
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.
Main causes: stale fuel, clogged fuel filter, faulty spark plug, clogged air filter, cracked fuel lines, clogged carbure…
Main causes: stale fuel, cracked fuel lines, dirty carburetor, bad spark plug, worn piston rings…
Main causes: cracked fuel lines, bad carburetor seals, leaky fuel tank cap, damaged fuel tank…
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.
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…
Repair difficulty
Time required
15 minutes or less
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 …
Repair difficulty
Time required
15 minutes or less
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…
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.
Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…
Follow these tips to prevent the cutting line on your grass line trimmer from breaking or feeding out too much or too li…
Follow the steps in this video to replace a leaking fuel line in a line trimmer.…