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MTD
Gas Line Trimmer

Model # 41BDY90C901 Official MTD trimmer

Here are the diagrams and repair parts for Official MTD 41BDY90C901 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 101 parts  |
Yard Machines Line Trimmer Fuel Line (replaces 791-180243, 791-181168, 791-182495) 791-181086
#18

Cylinder/flywheel/fuel tank diagram

Yard machines line trimmer fuel line (replaces 791-180243, 791-181168, 791-182495)

Part #791-181086

$10.88 | 
16% OFF Phone Price : $12.88
In Stock
Yard-man Lawn & Garden Equipment Screw (replaces Gw-9733) 791-181862
#33

Cylinder/flywheel/fuel tank diagram

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

Part #791-181862

This item is not returnable
$5.81 | 
15% OFF Phone Price : $6.81
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
Kmart Line Trimmer Drive Shaft Coupler (replaces 753-08212, 791-160511, 791-181616b) 753-1190
#17

Shield/handle/shaft diagram

Kmart line trimmer drive shaft coupler (replaces 753-08212, 791-160511, 791-181616b)

Part #753-1190

This item is not returnable
$31.62 | 
16% OFF Phone Price : $37.62
In Stock
Kmart Line Trimmer Drive Shaft Housing, Upper (replaces 753-05834, 769-04236) 753-04236
#8

Shield/handle/shaft diagram

Kmart line trimmer drive shaft housing, upper (replaces 753-05834, 769-04236)

Part #753-04236

$102.49 | 
10% OFF Phone Price : $114.49
In Stock
Line Trimmer Throttle Trigger Spring (replaces 732-04270, 732-04270a, 753-04992) 753-05007
#3

Shield/handle/shaft diagram

Line trimmer throttle trigger spring (replaces 732-04270, 732-04270a, 753-04992)

Part #753-05007

This item is not returnable
$7.77 | 
11% OFF Phone Price : $8.77
In Stock
Yard-man Lawn & Garden Equipment Engine Fuel Tank Cap 791-182529
#17

Cylinder/flywheel/fuel tank diagram

Yard-man lawn & garden equipment engine fuel tank cap

Part #791-182529

This item is not returnable
$28.71 | 
17% OFF Phone Price : $34.71
In Stock
Troybilt Line Trimmer Cutting Blade (replaces 791-145873) 791-145873B
#41

Shield/handle/shaft diagram

Troybilt line trimmer cutting blade (replaces 791-145873)

Part #791-145873B

Get free shipping with Automatic Reorder

$57.59 | 
9% OFF Phone Price : $63.59
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
#48

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

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…

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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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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