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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  |
Screw, M6x1 229287
#108

Shaft/shield/cutter assembly diagram

Screw, m6x1

Part #229287

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

Safety Lever 229819
#26

Shaft/shield/cutter assembly diagram

Safety lever

Part #229819

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

Kit, Line On 300690
#94

Shaft/shield/cutter assembly diagram

Kit, line on

Part #300690

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

Spacer 229971
#90

Shaft/shield/cutter assembly diagram

Spacer

Part #229971

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

Kit, Knob As 300737
#95

Shaft/shield/cutter assembly diagram

Kit, knob as

Part #300737

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

Cap Retainer 216157
#21

Engine assembly diagram

Cap retainer

Part #216157

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

Nut 236617
#62

Engine assembly diagram

Nut

Part #236617

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

Hsg/eyelet A 300091
#93

Shaft/shield/cutter assembly diagram

Hsg/eyelet a

Part #300091

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 …

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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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