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Homelite UT20818 trimmer/brushcutter Parts

Here are the diagrams and repair parts for Homelite UT20818 trimmer/brushcutter, as well as links to manuals and error code tables, if available.

Homelite UT20818 trimmer/brushcutter
By Schematic
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This is the number corresponding to the part on the diagram / schematic

Browse Parts for UT20818 Line Trimmers

  • Trigger With for Homelite UT20818 - Part UP03207A

    Trigger

    Part #UP03207

    Replaced by #UP03207A

    Info Icon
    Manufacturer substitution
    This part replaces UP03207. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $3.74
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    Qty
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  • Spring & Con for Homelite UT20818 - Part 638033001

    Spring

    Part #UP03917

    Replaced by #638033001

    Info Icon
    Manufacturer substitution
    This part replaces UP03917. Substitute parts can look different from the original.
    In Stock
    $28.22
    Minus Item
    Qty
    Plus Item
  • Tubing for Homelite UT20818 - Part UP04293

    Carburetor/fuel tank diagram

    Tubing

    Part #UP04293

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

  • Handle for Homelite UT20818 - Part UP03114

    Handle

    Part #UP03114

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

  • Housing for Homelite UT20818 - Part UP02965

    Housing

    Part #UP02965

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

  • Shaft Assembly for Homelite UT20818 - Part UP00710

    Shaft Assembly

    Part #UP00710

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

  • Cable for Homelite UT20818 - Part UP03172

    Cable

    Part #UP03172

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

  • Filter Assembly for Homelite UT20818 - Part UP05084

    Muffler/air cleaner diagram

    Filter Assembly

    Part #UP05084

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

  • Gear Head (includes Keys 17,18) for Homelite UT20818 - Part UP04124

    Shaft/spool/string/grass deflector diagram

    Gear Head (includes Keys 17,18)

    Part #UP04124

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

  • Slotted Hex for Homelite UT20818 - Part UP04155

    Shaft/spool/string/grass deflector diagram

    Slotted Hex

    Part #UP04155

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

Most common symptoms to help you fix your 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 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...

Repair time and Difficulty

 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 ...

Repair time and Difficulty

 15 minutes or less
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...

Repair time and Difficulty

 15 minutes or less

Effective articles & videos to help repair your line trimmers

Use the advice and tips in these articles and videos to get the most out of your grass line trimmer.

Line trimmer: Preventing fuel vapor lock in hot summer conditions

Line trimmer: Preventing fuel vapor lock in hot summer conditions

Vapor lock can stop your trimmer cold in summer heat. Learn how to prevent it and keep your lawn looking sharp...

Straight shaft vs curved shaft trimmers: What’s the difference?

Straight shaft vs curved shaft trimmers: What’s the difference?

Trying to decide between a straight shaft and curved shaft trimmer? This guide compares both designs to help you underst...

Can you cut grass with a weed whacker?

Can you cut grass with a weed whacker?

Wondering if your weed whacker can pick up the slack for your broken lawn mower? You're not alone. In this guide, we bre...

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