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Weed Eater
Gas Line Trimmer

Model # MX550 Official Weed Eater trimmer

Here are the diagrams and repair parts for Official Weed Eater MX550 trimmer, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 84 parts  |
Lawn & Garden Equipment Fuel Line, Small (replaces 530021058, 530-021058, 530021076, 5300692-47, 530-069247, 530-069751, 530071404) 530069247
#54

Cylinder/crankshaft/crankcase diagram

Lawn & garden equipment fuel line, small (replaces 530021058, 530-021058, 530021076, 5300692-47, 530-069247, 530-069751, 530071404)

Part #530069247

BEST SELLER
$10.11 | 
17% OFF Phone Price : $12.11
In Stock
Ignition Module 530039234
#22

Cylinder/crankshaft/crankcase diagram

Ignition module

Part #530039234

Replaced by #501092801

?
Manufacturer substitution
This part replaces 530039234. Substitute parts can look different from the original.
BEST SELLER
$30.33 | 
17% OFF Phone Price : $36.33
In Stock
Lawn & Garden Equipment Flywheel 530054115
#40

Cylinder/crankshaft/crankcase diagram

Lawn & garden equipment flywheel

Part #530054115

Replaced by #545221701

?
Manufacturer substitution
This part replaces 530054115. Substitute parts can look different from the original.
This item is not returnable
$27.08 | 
18% OFF Phone Price : $33.08
In Stock
Lawn & Garden Equipment Screw 530015814
Lawn & garden equipment screw

Part #530015814

Replaced by #503210619

?
Manufacturer substitution
This part replaces 530015814. Substitute parts can look different from the original.
This item is not returnable
$4.31 | 
19% OFF Phone Price : $5.31
In Stock
Piston Kit 530071357
#10

Cylinder/crankshaft/crankcase diagram

Piston kit

Part #530071357

Replaced by #530071833

?
Manufacturer substitution
This part replaces 530071357. Substitute parts can look different from the original.
$30.33 | 
17% OFF Phone Price : $36.33
In Stock
Line Trimmer Gearbox 530096099
#20

Driveshaft/shield/handle diagram

Line trimmer gearbox

Part #530096099

$41.17 | 
13% OFF Phone Price : $47.17
In Stock
Carburetor 530071752
#17

Cylinder/crankshaft/crankcase diagram

Carburetor

Part #530071752

Replaced by #530071822

?
Manufacturer substitution
This part replaces 530071752. Substitute parts can look different from the original.
$41.17 | 
13% OFF Phone Price : $47.17
In Stock
Carburetor 545081808
#17A

Cylinder/crankshaft/crankcase diagram

Carburetor

Part #545081808

Replaced by #530071822

?
Manufacturer substitution
This part replaces 545081808. Substitute parts can look different from the original.
$41.17 | 
13% OFF Phone Price : $47.17
In Stock
Lawn & Garden Equipment Screw 530016429
#19

Cylinder/crankshaft/crankcase diagram

Lawn & garden equipment screw

Part #530016429

This item is not returnable
$5.76 | 
15% OFF Phone Price : $6.76
In Stock
Lawn & Garden Equipment Head Bolt 530015953
#4

Cylinder/crankshaft/crankcase diagram

Lawn & garden equipment head bolt

Part #530015953

This item is not returnable
$5.76 | 
15% OFF Phone Price : $6.76
In Stock

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…

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.

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Top 10 electric lawn and 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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