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McCulloch
Gas Line Trimmer

Model # TITAN 3900 11-400070-01 Official McCulloch trimmer

Here are the diagrams and repair parts for Official McCulloch TITAN-3900-11-400070-01 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 171 parts  |
Handle 227764
#50

Shaft/shield/cutter assembly diagram

Handle

Part #227764

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

Pin 236365
#37

Engine assembly diagram

Pin

Part #236365

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

Half Handle 229831
#72

Shaft/shield/cutter assembly diagram

Half handle

Part #229831

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

Guard Asy-st 246861
#80

Shaft/shield/cutter assembly diagram

Guard asy-st

Part #246861

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

Screw 3x16 240618
Screw 3x16

Part #240618

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

Kit 300318
#113

Shaft/shield/cutter assembly diagram

Kit

Part #300318

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

Spacer 229971
#90

Shaft/shield/cutter assembly diagram

Spacer

Part #229971

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

Retaining Cl 236378
#76

Shaft/shield/cutter assembly diagram

Retaining cl

Part #236378

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

Grommet 236322
#55

Engine assembly diagram

Grommet

Part #236322

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

Knife 300626
Knife

Part #300626

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 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 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 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 …

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…

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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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Top 10 electric lawn and garden tools for 2023

Learn about the top 10 must-have electric lawn & garden tools for 2023…

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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.…

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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…

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