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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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ALL PARTS
Showing 10 of 171 parts  |
Wire Grommet 227774
#59

Engine assembly diagram

Wire grommet

Part #227774

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

Screw, M6x12 235911
#14

Engine assembly diagram

Screw, m6x12

Part #235911

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

Gas Cylinder 227239
#13

Engine assembly diagram

Gas cylinder

Part #227239

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

Half Housing 229985
#64

Shaft/shield/cutter assembly diagram

Half housing

Part #229985

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

Muffler Assembly 240554
#26

Engine assembly diagram

Muffler assembly

Part #240554

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

Stud,left-al 322106
#97

Shaft/shield/cutter assembly diagram

Stud,left-al

Part #322106

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

Throttle Wire 240506
#61

Shaft/shield/cutter assembly diagram

Throttle wire

Part #240506

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

Flange Spindle 218075
#3

Shaft/shield/cutter assembly diagram

Flange spindle

Part #218075

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

Str Spring S 227467
#71

Engine assembly diagram

Str spring s

Part #227467

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…

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…

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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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