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MTD
Lawn Edger

Model # 551 Official MTD edger

Here are the diagrams and repair parts for Official MTD 551 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:

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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 86 parts  |
Lawn Tractor Screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599) 710-0599
Lawn tractor screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599)

Part #710-0599

BEST SELLER
This item is not returnable
$4.91
| 
17% OFF Phone Price : $5.91
In Stock
Knob Assembly 720-0241
#9

Handle diagram

Knob assembly

Part #720-0241

Replaced by #720-04072A

?
Manufacturer substitution
This part replaces 720-0241. Substitute parts can look different from the original.
BEST SELLER
$9.33
| 
10% OFF Phone Price : $10.33
In Stock
Lock Washer 736-0119
Lock washer

Part #736-0119

Replaced by #936-0119

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Manufacturer substitution
This part replaces 736-0119. Substitute parts can look different from the original.
This item is not returnable
$6.05
| 
14% OFF Phone Price : $7.05
In Stock
Yard Machines Lawn Mower Wheel 734-1987
Yard machines lawn mower wheel

Part #734-1987

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

Part #781-0427

Replaced by #781-0427-0637

?
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 Tractor Hex Bolt 710-3008
#4

Handle diagram

Lawn tractor hex bolt

Part #710-3008

This item is not returnable
$4.62
| 
18% OFF Phone Price : $5.62
In Stock
Ace Lawn & Garden Equipment Flange Lock Nut 712-3004A
Ace lawn & garden equipment flange lock nut

Part #712-3004A

This item is not returnable
$4.92
| 
17% OFF Phone Price : $5.92
In Stock
Grease Fitting 737-3000
#18

Spindle assembly - 550 and 551 diagram

Grease fitting

Part #737-3000

Replaced by #937-3000

?
Manufacturer substitution
This part replaces 737-3000. Substitute parts can look different from the original.
This item is not returnable
$6.38
| 
14% OFF Phone Price : $7.38
In Stock
Lawn Mower Wheel (replaces 734-04086) 734-1988
Lawn mower wheel (replaces 734-04086)

Part #734-1988

This item is not returnable
$23.27
| 
20% OFF Phone Price : $29.27
In Stock
Lawn & Garden Equipment Screw 710-0606
#5

Handle diagram

Lawn & garden equipment screw

Part #710-0606

This item is not returnable
$8.21
| 
11% OFF Phone Price : $9.21
In Stock

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