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Bolens
Gas Line Trimmer

Model # 41BD100G163 Official Bolens trimmer

Here are the diagrams and repair parts for Official Bolens 41BD100G163 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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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 70 parts  |
Knob Asm-bmp 791-153066
#16

Boom and trimmer diagram

Knob asm-bmp

Part #791-153066

Replaced by #791-153066B

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Manufacturer substitution
This part replaces 791-153066. Substitute parts can look different from the original.
BEST SELLER
$18.38 | 
10% OFF Phone Price : $20.38
In Stock
Yard Machines Lawn & Garden Equipment Engine Start/stop Switch (replaces 182405) 791-182405
#32

Engine diagram

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

Part #791-182405

BEST SELLER
$14.29 | 
12% OFF Phone Price : $16.29
In Stock
Inner Reel 791-610318
#15

Boom and trimmer diagram

Inner reel

Part #791-610318

Replaced by #753-1155

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Manufacturer substitution
This part replaces 791-610318. Substitute parts can look different from the original.
$26.04 | 
19% OFF Phone Price : $32.04
In Stock
Lawn & Garden Equipment Screw 791-182519
#34

Engine diagram

Lawn & garden equipment screw

Part #791-182519

This item is not returnable
$6.73 | 
13% OFF Phone Price : $7.73
In Stock
Ryobi Lawn & Garden Equipment Engine Fuel Tank Cap (replaces 753-1187) 791-182612
#18

Engine diagram

Ryobi lawn & garden equipment engine fuel tank cap (replaces 753-1187)

Part #791-182612

This item is not returnable
$27.11 | 
18% OFF Phone Price : $33.11
In Stock
Yard-man Lawn & Garden Equipment Bolt 791-182723
#45

Engine diagram

Yard-man lawn & garden equipment bolt

Part #791-182723

This item is not returnable
$6.37
In Stock
Yard Machines Lawn & Garden Equipment Engine Carburetor Mounting Gasket 791-610675
#9

Engine diagram

Yard machines lawn & garden equipment engine carburetor mounting gasket

Part #791-610675

This item is not returnable
$5.57 | 
15% OFF Phone Price : $6.57
In Stock
Tiller Clutch Cover Screw 791-181345
#47

Engine diagram

Tiller clutch cover screw

Part #791-181345

This item is not returnable
$5.28 | 
16% OFF Phone Price : $6.28
In Stock
Yard Machines Lawn & Garden Equipment Engine Carburetor Mount Gasket 753-1208
#14

Engine diagram

Yard machines lawn & garden equipment engine carburetor mount gasket

Part #753-1208

This item is not returnable
$22.05 | 
21% OFF Phone Price : $28.05
In Stock
Yard Machines Lawn & Garden Equipment Bolt 791-147575
#41

Engine diagram

Yard machines lawn & garden equipment bolt

Part #791-147575

$13.09 | 
13% OFF Phone Price : $15.09
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…

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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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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…

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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.…

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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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