Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
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.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 123 parts  |
Boot 95266
#41

Powerhead assembly diagram

Boot

Part #95266

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

Drum Rope Assembly 300872
#12

Starter housing assembly diagram

Drum rope assembly

Part #300872

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

Sm Cover 224237
#10

Powerhead assembly diagram

Sm cover

Part #224237

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

Nut, Hex (7 322847
#34

Powerhead assembly diagram

Nut, hex (7

Part #322847

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

Wire Asy, Sw 301135
#20

Starter housing assembly diagram

Wire asy, sw

Part #301135

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

Gasket 322031
#21

Powerhead assembly diagram

Gasket

Part #322031

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

Label, Choke (int'l) 322240
#9

Powerhead assembly diagram

Label, choke (int'l)

Part #322240

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

Fuel Cover 300072
#5

Carburetor assembly diagram

Fuel cover

Part #300072

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.

View all

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…

Read more

Why won't my gas line trimmer start?

Main causes: stale fuel, cracked fuel lines, dirty carburetor, bad spark plug, worn piston rings…

Read more

Why does my gas line trimmer leak gas?

Main causes: cracked fuel lines, bad carburetor seals, leaky fuel tank cap, damaged fuel tank…

Read more

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.

View all
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…

Read more
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.

View all
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…

Read more
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.…

Read more
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.…

Read more

Parts & More