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McCulloch
Gas Line Trimmer

Model # MAC284S 12-400128-86 Official McCulloch trimmer

Here are the diagrams and repair parts for Official McCulloch MAC284S-12-400128-86 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  |
Clip 215876
#51

Powerhead assembly diagram

Clip

Part #215876

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

Cylinder 300452
#55

Powerhead assembly diagram

Cylinder

Part #300452

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

Screw-phl M5 216795
#12

Shaft/shield assembly diagram

Screw-phl m5

Part #216795

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

Spark Plug 62345
#63

Powerhead assembly diagram

Spark plug

Part #62345

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

Manifold 224041
#18

Powerhead assembly diagram

Manifold

Part #224041

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

Crankshaft 224023
#64

Powerhead assembly diagram

Crankshaft

Part #224023

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

Decal,thrown 211215
#7

Shaft/shield assembly diagram

Decal,thrown

Part #211215

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

Button 222914
#23

Starter housing assembly diagram

Button

Part #222914

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

Plug 300119
#21

Starter housing assembly diagram

Plug

Part #300119

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

Knob 322719
#30

Shaft/shield assembly diagram

Knob

Part #322719

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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