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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  |
Cylinder Piston Kit 240008
#42A

Engine assembly diagram

Cylinder piston kit

Part #240008

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

Insulator Ca 227692
#7

Engine assembly diagram

Insulator ca

Part #227692

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

Guard Asy-ny 240501
#79

Shaft/shield/cutter assembly diagram

Guard asy-ny

Part #240501

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

Bearing Piston Pin 235742
#39

Engine assembly diagram

Bearing piston pin

Part #235742

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

Throttle Wire 240489
#34

Shaft/shield/cutter assembly diagram

Throttle wire

Part #240489

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

Trigger 229818
#51

Shaft/shield/cutter assembly diagram

Trigger

Part #229818

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

Pin 229823
Pin

Part #229823

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

Clutch Drum 227284
#78

Shaft/shield/cutter assembly diagram

Clutch drum

Part #227284

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

Outer Shaft 227233
#39

Shaft/shield/cutter assembly diagram

Outer shaft

Part #227233

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

Clutch Washer 236739
#32

Engine assembly diagram

Clutch washer

Part #236739

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

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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