Get free shipping on your order, with any water filter subscription. Find my filter

Open Hamburger Menu
Sears Parts Direct
Tips to find your model number
McCulloch MAC284S 12-400128-77 trimmer

McCulloch MAC284S 12-400128-77 trimmer Parts

Here are the diagrams and repair parts for McCulloch MAC284S 12-400128-77 trimmer, as well as links to manuals and error code tables, if available.

By Schematic
SELECT DIAGRAM
?

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

Browse Parts for MAC284S 12-400128-77 Line Trimmers

  • Starter Spring for McCulloch MAC284S 12-400128-77 - Part 322835

    Powerhead assembly diagram

    Starter Spring

    Part #322835

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

  • Spring Clip for McCulloch MAC284S 12-400128-77 - Part 223412

    Shaft/shield assembly diagram

    Spring Clip

    Part #223412

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

  • Trigger for McCulloch MAC284S 12-400128-77 - Part 300361

    Starter housing assembly diagram

    Trigger

    Part #300361

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

  • Housing for McCulloch MAC284S 12-400128-77 - Part 300118

    Starter housing assembly diagram

    Housing

    Part #300118

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

  • Piston Pin for McCulloch MAC284S 12-400128-77 - Part 300482

    Powerhead assembly diagram

    Piston Pin

    Part #300482

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

  • Fuel Filter for McCulloch MAC284S 12-400128-77 - Part 300869

    Powerhead assembly diagram

    Fuel Filter

    Part #300869

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

  • Starter Pawl for McCulloch MAC284S 12-400128-77 - Part 322297

    Powerhead assembly diagram

    Starter Pawl

    Part #322297

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

  • Nut, Hex M for McCulloch MAC284S 12-400128-77 - Part 217159

    Shaft/shield assembly diagram

    Nut, Hex M

    Part #217159

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

  • C'case/c'shf for McCulloch MAC284S 12-400128-77 - Part 300765

    Powerhead assembly diagram

    C'case/c'shf

    Part #300765

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

  • Spring for McCulloch MAC284S 12-400128-77 - Part 300475

    Starter housing assembly diagram

    Spring

    Part #300475

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

Most common symptoms to help you fix your line trimmers

Choose a symptom to see related grass line trimmer repairs.

Main causes: stale fuel, clogged fuel filter, faulty spark plug, clogged air filter, cracked fuel lines, clogged carbure…

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

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

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.

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…

Repair time and Difficulty

 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 …

Repair time and Difficulty

 15 minutes or less
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…

Repair time and Difficulty

 15 minutes or less

Effective articles & videos to help repair your line trimmers

Use the advice and tips in these articles and videos to get the most out of your grass line trimmer.

Line trimmer: Preventing fuel vapor lock in hot summer conditions

Line trimmer: Preventing fuel vapor lock in hot summer conditions

Vapor lock can stop your trimmer cold in summer heat. Learn how to prevent it and keep your lawn looking sharp…

Straight shaft vs curved shaft trimmers: What’s the difference?

Straight shaft vs curved shaft trimmers: What’s the difference?

Trying to decide between a straight shaft and curved shaft trimmer? This guide compares both designs to help you underst…

Can you cut grass with a weed whacker?

Can you cut grass with a weed whacker?

Wondering if your weed whacker can pick up the slack for your broken lawn mower? You're not alone. In this guide, we bre…

Parts & More

Bottom-Mount Refrigerator
Dryer
Electronic Sewing Machine
Gas Chainsaw
Microwave/Hood Combo
Parts
Power Drill
Rear-Engine Riding Mower
Receiver
Side-By-Side Refrigerator
Top-Mount Refrigerator