Gas Line Trimmer

Model # 41AD770C799 Official MTD trimmer

Here are the diagrams and repair parts for Official MTD 41AD770C799 trimmer, as well as links to manuals and error code tables, if available.

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41AD770C799 Line Trimmers
Clutch 791-182369
#34

Engine diagram

Clutch

Part #791-182369

Replaced by #753-05860

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Manufacturer substitution
This part replaces 791-182369. Substitute parts can look different from the original.
$25.97
19% OFF Phone Price : $31.97
In Stock
Mtd Yard Machines Line Trimmer Primer Bulb And Hose Assembly 791-683974B
#8

Engine diagram

Mtd yard machines line trimmer primer bulb and hose assembly

Part #791-683974B

$31.56
16% OFF Phone Price : $37.56
In Stock
Mtd Line Trimmer Throttle Trigger Spring 791-182690
#3

Boom and trimmer diagram

Mtd line trimmer throttle trigger spring

Part #791-182690

This item is not returnable
$12.30
14% OFF Phone Price : $14.30
In Stock
Mtd Lawn And Garden Equipment Screw 791-182057
#13

Boom and trimmer diagram

Mtd lawn and garden equipment screw

Part #791-182057

This item is not returnable
$6.87
13% OFF Phone Price : $7.87
In Stock
Mtd Yard-man Lawn And Garden Equipment Screw 791-181862
#32

Engine diagram

Mtd yard-man lawn and garden equipment screw

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

Engine 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
Lawn & Garden Equipment Screw 791-182519
#38

Engine diagram

Lawn & garden equipment screw

Part #791-182519

This item is not returnable
$6.73
13% OFF Phone Price : $7.73
In Stock
Mtd Line Trimmer Throttle Cable (replaces 743-04405, 746-04085, 753-04405, 753-04999) 746-04085A
#5

Boom and trimmer diagram

Mtd line trimmer throttle cable (replaces 743-04405, 746-04085, 753-04405, 753-04999)

Part #746-04085A

$16.40
11% OFF Phone Price : $18.40
In Stock
Yard Machines Lawn & Garden Equipment Screw 791-182195
#20

Boom and trimmer diagram

Yard machines lawn & garden equipment screw

Part #791-182195

This item is not returnable
$10.87
16% OFF Phone Price : $12.87
In Stock
Yard Machines Line Trimmer Clutch Drum (replaces 753-06146) 791-153592
#35

Engine diagram

Yard machines line trimmer clutch drum (replaces 753-06146)

Part #791-153592

$62.73
9% OFF Phone Price : $68.73
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

Effective articles & videos to help repair your line trimmers

Use the advice and tips in these articles and videos to get the most out of your grass line trimmer.

Straight shaft vs curved shaft trimmers: What’s the difference?

Straight shaft vs curved shaft trimmers: What’s the difference?

Trying to decide between a straight shaft and curved shaft trimmer? This guide compares both designs to help you underst…

Can you cut grass with a weed whacker?

Can you cut grass with a weed whacker?

Wondering if your weed whacker can pick up the slack for your broken lawn mower? You're not alone. In this guide, we bre…