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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  |
Cylinder 300452
#55

Powerhead assembly diagram

Cylinder

Part #300452

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

Air Filter 224239
#11

Powerhead assembly diagram

Air filter

Part #224239

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

Power 224224
#52

Powerhead assembly diagram

Power

Part #224224

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

Connecting Rod 224009
#47

Powerhead assembly diagram

Connecting rod

Part #224009

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

Dm/rpe A 222869
#13

Starter housing assembly diagram

Dm/rpe a

Part #222869

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

Housing 224234
#1

Starter housing assembly diagram

Housing

Part #224234

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

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

Kit, Knob As 300737
#21

Shaft/shield assembly diagram

Kit, knob as

Part #300737

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 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 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 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...

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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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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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Solving 3 common problems with line trimmer cutting lines

Solving 3 common problems with line trimmer cutting lines

Follow these tips to prevent the cutting line on your grass line trimmer from breaking or feeding out too much or too li...

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How to replace a line trimmer fuel line video

How to replace a line trimmer fuel line video

Follow the steps in this video to replace a leaking fuel line in a line trimmer....

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