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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  |
Screw 111070
#6

Starter housing assembly diagram

Screw

Part #111070

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

Nut 11085
#35

Powerhead assembly diagram

Nut

Part #11085

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

Starter Spring 322835
#31

Powerhead assembly diagram

Starter spring

Part #322835

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

"c" Ring N/P
"c" ring

Part #N/P

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

Screen 322032
#4

Powerhead assembly diagram

Screen

Part #322032

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

Cable 300149-01
#5

Starter housing assembly diagram

Cable

Part #300149-01

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

Nut, Hex M 217159
#11

Shaft/shield assembly diagram

Nut, hex m

Part #217159

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

Screw Spring 322027
#10

Starter housing assembly diagram

Screw spring

Part #322027

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

Decal 211214
#6

Shaft/shield assembly diagram

Decal

Part #211214

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…

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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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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How to tune up a grass line trimmer video

How to tune up a grass line trimmer video

Tune of your grass line trimmer, following the steps in this video.…

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