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MTD
Gas Line Trimmer

Model # 41ADY70C901 Official MTD trimmer

Here are the diagrams and repair parts for Official MTD 41ADY70C901 trimmer, as well as links to manuals and error code tables, if available.

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  • 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”.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 84 parts  |
Yard Machines Lawn & Garden Equipment Engine Start/stop Switch (replaces 182405) 791-182405
#4

Shield/handle/drive shaft diagram

Yard machines lawn & garden equipment engine start/stop switch (replaces 182405)

Part #791-182405

BEST SELLER
$13.29 | 
22% OFF Was : $17.00
In Stock
Line Trimmer Spool Spring (replaces 791-610317, 791-bq01642) 791-610317B
#25

Shield/handle/drive shaft diagram

Line trimmer spool spring (replaces 791-610317, 791-bq01642)

Part #791-610317B

$16.62 | 
11% OFF Phone Price : $18.62
In Stock
Yard-man Lawn & Garden Equipment Screw (replaces Gw-9733) 791-181862
#34

Cylinder/flywheel/fuel tank diagram

Yard-man lawn & garden equipment screw (replaces gw-9733)

Part #791-181862

This item is not returnable
$6.78 | 
13% OFF Phone Price : $7.78
In Stock
Yard Machines Lawn & Garden Equipment Engine Air Filter 791-180350B
#2

Cylinder/flywheel/fuel tank diagram

Yard machines lawn & garden equipment engine air filter

Part #791-180350B

This item is not returnable
$13.02 | 
13% OFF Phone Price : $15.02
In Stock
Line Trimmer Shaft Coupler 791-181616B
#11

Shield/handle/drive shaft diagram

Line trimmer shaft coupler

Part #791-181616B

Replaced by #753-1190

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Manufacturer substitution
This part replaces 791-181616B. Substitute parts can look different from the original.
This item is not returnable
$29.42 | 
17% OFF Phone Price : $35.42
In Stock
Lawn & Garden Equipment Screw 791-182519
#40

Cylinder/flywheel/fuel tank diagram

Lawn & garden equipment screw

Part #791-182519

This item is not returnable
$6.27 | 
23% OFF Was : $8.10
In Stock
Line Trimmer Drive Shaft Housing (replaces 753-04346, 753-04347, 753-04351) 753-04344
#6

Shield/handle/drive shaft diagram

Line trimmer drive shaft housing (replaces 753-04346, 753-04347, 753-04351)

Part #753-04344

$87.56 | 
6% OFF Phone Price : $93.56
In Stock
Yard Machines Lawn & Garden Equipment Engine Recoil Starter Rope 791-613103
#29

Cylinder/flywheel/fuel tank diagram

Yard machines lawn & garden equipment engine recoil starter rope

Part #791-613103

This item is not returnable
$15.79 | 
11% OFF Phone Price : $17.79
In Stock
Starter Handle 791-181079
#28

Cylinder/flywheel/fuel tank diagram

Starter handle

Part #791-181079

Replaced by #631-04164B

?
Manufacturer substitution
This part replaces 791-181079. Substitute parts can look different from the original.
This item is not returnable
$6.19 | 
14% OFF Phone Price : $7.19
In Stock
Muffler Screw 753-04620
#47

Cylinder/flywheel/fuel tank diagram

Muffler screw

Part #753-04620

Replaced by #710-04188A

?
Manufacturer substitution
This part replaces 753-04620. Substitute parts can look different from the original.
This item is not returnable
$6.35 | 
14% OFF Phone Price : $7.35
In Stock

Symptoms for gas line trimmers

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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

Learn about the top 10 must-have electric lawn & 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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