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Weed Eater
Gas Line Trimmer

Model # MX557 Official Weed Eater line trimmer

Here are the diagrams and repair parts for Official Weed Eater MX557 line trimmer, as well as links to manuals and error code tables, if available.

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

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 58 parts  |
Lawn & Garden Equipment Fuel Line, Small (replaces 530021058, 530-021058, 530021076, 5300692-47, 530-069247, 530-069751, 530071404) 530069247
#56

Cylinder/crankshaft/crankcase diagram

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

Part #530069247

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$10.11 | 
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In Stock
Lawn & Garden Equipment Fuel Line, Large (replaces 530021017, 530-021025, 530021026, 530-021026, 530021028, 530-021028, 530-021035, 530021042, 530021132, 530028505, 530-028505, 5300692-16, 530-069216) 530069216
#57

Cylinder/crankshaft/crankcase diagram

Lawn & garden equipment fuel line, large (replaces 530021017, 530-021025, 530021026, 530-021026, 530021028, 530-021028, 530-021035, 530021042, 530021132, 530028505, 530-028505, 5300692-16, 530-069216)

Part #530069216

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$14.44 | 
12% OFF Phone Price : $16.44
In Stock
Lawn & Garden Equipment Engine Air Filter (replaces 5300365-75, 530-036575) 530036575
#21

Cylinder/crankshaft/crankcase diagram

Lawn & garden equipment engine air filter (replaces 5300365-75, 530-036575)

Part #530036575

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This item is not returnable
$7.20 | 
12% OFF Phone Price : $8.20
In Stock
Line Trimmer Primer Bulb 530058709

#NI03

All parts diagram

Line trimmer primer bulb

Part #530058709

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Craftsman Line Trimmer Throttle Trigger 530058000
#2

Driveshaft/handle/shield diagram

Craftsman line trimmer throttle trigger

Part #530058000

This item is not returnable
$3.42
In Stock
Line Trimmer Spool Spring (replaces 5373388-01) 537338801
#25

Driveshaft/handle/shield diagram

Line trimmer spool spring (replaces 5373388-01)

Part #537338801

This item is not returnable
$7.20 | 
12% OFF Phone Price : $8.20
In Stock
Line Trimmer Carburetor Adapter 530057547
#14

Cylinder/crankshaft/crankcase diagram

Line trimmer carburetor adapter

Part #530057547

This item is not returnable
$16.71
In Stock
Line Trimmer Engine Gasket Set 530071750
Line trimmer engine gasket set

Part #530071750

This item is not returnable
$17.33 | 
10% OFF Phone Price : $19.33
In Stock
Lawn & Garden Equipment Engine Piston And Rod Assembly 530071785
#48

Cylinder/crankshaft/crankcase diagram

Lawn & garden equipment engine piston and rod assembly

Part #530071785

$41.17 | 
13% OFF Phone Price : $47.17
In Stock
Lawn & Garden Equipment Bolt 530015820
#15

Driveshaft/handle/shield diagram

Lawn & garden equipment bolt

Part #530015820

This item is not returnable
$7.40
In Stock

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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