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McCulloch
Gas Line Trimmer

Model # MAC284S 12-400128-77 Official McCulloch trimmer

Here are the diagrams and repair parts for Official McCulloch MAC284S-12-400128-77 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 123 parts  |
Shield 322030
#54

Powerhead assembly diagram

Shield

Part #322030

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

Housing 300118
#8

Starter housing assembly diagram

Housing

Part #300118

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

Fuel Decal 322250
#28

Powerhead assembly diagram

Fuel decal

Part #322250

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

Bolt-hx M8x8 216832
#13

Shaft/shield assembly diagram

Bolt-hx m8x8

Part #216832

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

Hose 225162
#24

Powerhead assembly diagram

Hose

Part #225162

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

Spark Arrestor 224040
#3

Powerhead assembly diagram

Spark arrestor

Part #224040

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

Starter Pawl 322297
#32

Powerhead assembly diagram

Starter pawl

Part #322297

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

C'case/c'shf 300765
#46

Powerhead assembly diagram

C'case/c'shf

Part #300765

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

Gasket 224922
#7

Powerhead assembly diagram

Gasket

Part #224922

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

Washer 218941
#14

Starter housing assembly diagram

Washer

Part #218941

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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