MTD
Lawn Edger

Model # 25B-55J1799 Official MTD edger

Here are the diagrams and repair parts for Official MTD 25B-55J1799 edger, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 180 parts  |

Lawn & Garden Equipment Lock Nut, 5/16-18 (replaces 753-05591) 712-04063
#17

Edger diagram

Lawn & garden equipment lock nut, 5/16-18 (replaces 753-05591)

Part #712-04063

BEST SELLER
This item is not returnable
$4.09
20% OFF Phone Price : $5.09
In Stock
Lawn & Garden Equipment Hex Flange Nut (replaces 753-05549, 912-0417a) 712-0417A
#19

Edger diagram

Lawn & garden equipment hex flange nut (replaces 753-05549, 912-0417a)

Part #712-0417A

BEST SELLER
$7.44
22% OFF MSRP : $9.60
In Stock
Edger Blade (replaces 781-0748, Oem-781-0748) 781-0748-0637
#62

Edger diagram

Edger blade (replaces 781-0748, oem-781-0748)

Part #781-0748-0637

BEST SELLER

Get free shipping with Automatic Reorder

$29.31
15% OFF Phone Price : $34.31
In Stock
Lawn Mower Handle Knob (replaces 01000382, 113589, 720-04072, 720-04125) 720-04072A
#24

Edger diagram

Lawn mower handle knob (replaces 01000382, 113589, 720-04072, 720-04125)

Part #720-04072A

BEST SELLER
$8.69
21% OFF MSRP : $11.00
In Stock
Lawn & Garden Equipment Flange Nut 712-04217
#66

Edger diagram

Lawn & garden equipment flange nut

Part #712-04217

BEST SELLER
$6.58
13% OFF Phone Price : $7.58
In Stock
Lawn & Garden Equipment Push Cap 726-0299
#25

Edger diagram

Lawn & garden equipment push cap

Part #726-0299

This item is not returnable
$12.39
14% OFF Phone Price : $14.39
In Stock
Edger Belt Guard (replaces 781-0086-0637, 781-0427) 781-0427-0637
#59

Edger diagram

Edger belt guard (replaces 781-0086-0637, 781-0427)

Part #781-0427-0637

This item is not returnable
$26.77
16% OFF Phone Price : $31.77
In Stock
Lawn & Garden Equipment Wing Nut (replaces 01002925, 920-0279) 720-0279
#23

Edger diagram

Lawn & garden equipment wing nut (replaces 01002925, 920-0279)

Part #720-0279

This item is not returnable
$6.87
13% OFF Phone Price : $7.87
In Stock
Edger Blade Guard 731-05064
#28

Edger diagram

Edger blade guard

Part #731-05064

Replaced by #731P05064

?
Manufacturer substitution
This part replaces 731-05064. Substitute parts can look different from the original.
This item is not returnable
$32.85
13% OFF Phone Price : $37.85
In Stock
Edger Lower Handle 749-04234
#50

Edger diagram

Edger lower handle

Part #749-04234

$63.69
7% OFF Phone Price : $68.69
In Stock

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

Repair difficulty
Time required
 60 minutes or less
How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower ignition coil on a flathead engine

How to replace a lawn mower ignition coil on a flathead engine

If the spark plug doesn't fire when you try to start the mower, you could have a defective ignition coil. Follow these s…

Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your lawn edgers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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…