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MTD
Lawn Edger

Model # 25B-520A700 Official MTD edger

Here are the diagrams and repair parts for Official MTD 25B-520A700 edger, 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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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 72 parts  |
Yard Machines Lawn & Garden Equipment Lock Nut, 5/16-18 (replaces 753-05591) 712-04063
#15

Flywheel/pulley/wheels diagram

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

Part #712-04063

BEST SELLER
This item is not returnable
$4.40 | 
19% OFF Phone Price : $5.40
In Stock
Lawn Tractor Screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599) 710-0599
#3

Blade plate assembly diagram

Lawn tractor screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599)

Part #710-0599

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This item is not returnable
$4.91 | 
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Knob-lower H 720-04052
#18

Flywheel/pulley/wheels diagram

Knob-lower h

Part #720-04052

Replaced by #720-04072A

?
Manufacturer substitution
This part replaces 720-04052. Substitute parts can look different from the original.
BEST SELLER
$9.33 | 
10% OFF Phone Price : $10.33
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Yard Machines Lawn Mower Wheel 734-1987
#35

Flywheel/pulley/wheels diagram

Yard machines lawn mower wheel

Part #734-1987

$26.80 | 
18% OFF Phone Price : $32.80
In Stock
Belt Guard 781-0427
#21

Blade plate assembly diagram

Belt guard

Part #781-0427

Replaced by #781-0427-0637

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Manufacturer substitution
This part replaces 781-0427. Substitute parts can look different from the original.
This item is not returnable
$26.77 | 
18% OFF Phone Price : $32.77
In Stock
Lawn & Garden Equipment Self-tapping Screw 710-0726
#11

Flywheel/pulley/wheels diagram

Lawn & garden equipment self-tapping screw

Part #710-0726

Replaced by #710-0726

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Manufacturer substitution
This part replaces 710-0726. Substitute parts can look different from the original.
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Handle 749-04184
#24

Flywheel/pulley/wheels diagram

Handle

Part #749-04184

Replaced by #749-04234

?
Manufacturer substitution
This part replaces 749-04184. Substitute parts can look different from the original.
$63.69 | 
9% OFF Phone Price : $69.69
In Stock
Lawn & Garden Equipment Flat Washer 736-0342
#26

Blade plate assembly diagram

Lawn & garden equipment flat washer

Part #736-0342

$12.34
In Stock
Ace Lawn Tractor Hex Screw 710-0654A
#3

Flywheel/pulley/wheels diagram

Ace lawn tractor hex screw

Part #710-0654A

This item is not returnable
$6.57 | 
13% OFF Phone Price : $7.57
In Stock
Lawn & Garden Equipment Shoulder Screw 738-0929
#39

Flywheel/pulley/wheels diagram

Lawn & garden equipment shoulder screw

Part #738-0929

This item is not returnable
$13.80
In Stock

Symptoms for treadmills

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Why does my treadmill's walking belt slow down?

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

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Why is my treadmill's walking belt slipping?

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

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Why is my treadmill's walking belt off center?

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

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Why won't my treadmill start even though the console display works?

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

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Why is my treadmill's heart rate sensor not accurate?

Main causes: faulty sensors, wiring failure, bad control console…

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Why does my treadmill have no display?

Main causes: bad control console, wiring failure, bad motor control board…

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Why won't my treadmill power up?

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

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Repair guides for treadmills

These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

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How to replace a treadmill motor controller

How to replace a treadmill motor controller

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…

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Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill drive motor

How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…

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Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking board

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…

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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 treadmill.

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Top 10 electric lawn and garden tools for 2023

Top 10 electric lawn and garden tools for 2023

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