Gas Line Trimmer

Model # MC125 TYPE 1 Official McCulloch trimmer

Here are the diagrams and repair parts for Official McCulloch MC125 TYPE 1 trimmer, as well as links to manuals and error code tables, if available.

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Browse Parts for
MC125 TYPE 1 Line Trimmers
Lawn & Garden Equipment Engine Fuel Filter (replaces 530010811, 530014199, 530-014199, 530014362, 530-014362, 530014815, 530023364, 530047004, 5300956-46, 530095649) 530095646
#53

Cylinder/fuel tank/crankcase diagram

Lawn & garden equipment engine fuel filter (replaces 530010811, 530014199, 530-014199, 530014362, 530-014362, 530014815, 530023364, 530047004, 5300956-46, 530095649)

Part #530095646

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$9.31
10% OFF Phone Price : $10.31
In Stock
Lawn & Garden Equipment Engine Fuel Return Line (replaces 5300695-99, 530-069599, 530069751) 530069599
#52

Cylinder/fuel tank/crankcase diagram

Lawn & garden equipment engine fuel return line (replaces 5300695-99, 530-069599, 530069751)

Part #530069599

BEST SELLER
$9.31
10% OFF Phone Price : $10.31
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Lawn & Garden Equipment Engine Crankcase Plug 530057954
#46

Cylinder/fuel tank/crankcase diagram

Lawn & garden equipment engine crankcase plug

Part #530057954

This item is not returnable
$7.76
11% OFF Phone Price : $8.76
In Stock
Leaf Blower Fuel Tank Cap 578931603
#51A

Cylinder/fuel tank/crankcase diagram

Leaf blower fuel tank cap

Part #578931603

Replaced by #578931604

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Manufacturer substitution
This part replaces 578931603. Substitute parts can look different from the original.
This item is not returnable
$9.31
10% OFF Phone Price : $10.31
In Stock
Line Trimmer Clutch Assembly (replaces 545008038) 530055122
#29

Cylinder/fuel tank/crankcase diagram

Line trimmer clutch assembly (replaces 545008038)

Part #530055122

This item is not returnable
$27.98
18% OFF Phone Price : $33.98
In Stock
Line Trimmer Gearbox 530096099
#16

Drive shaft/shield/handle diagram

Line trimmer gearbox

Part #530096099

$44.32
12% OFF Phone Price : $50.32
In Stock
Lawn & Garden Equipment Screw 530016429
#19

Cylinder/fuel tank/crankcase diagram

Lawn & garden equipment screw

Part #530016429

This item is not returnable
$4.67
19% OFF Was : $5.76
In Stock
Line Trimmer Throttle Housing, Left 530059760
#6

Drive shaft/shield/handle diagram

Line trimmer throttle housing, left

Part #530059760

In Stock
Line Trimmer Flexible Drive Shaft 530096218
#17

Drive shaft/shield/handle diagram

Line trimmer flexible drive shaft

Part #530096218

This item is not returnable
$7.78
23% OFF Was : $10.11
In Stock
Leaf Blower Engine Crankshaft Oil Seal 530019264
#41

Cylinder/fuel tank/crankcase diagram

Leaf blower engine crankshaft oil seal

Part #530019264

In Stock

Symptoms for gas line trimmers

Choose a symptom to see related grass line trimmer repairs.

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

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

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 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 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 …

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…

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.

Top 10 electric lawn and garden tools for 2023

Top 10 electric lawn and garden tools for 2023

Learn about the top 10 must-have electric lawn & garden tools for 2023…

How to enjoy all the online benefits we offer on our Sears PartsDirect website

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.…

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…