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MTD
Front-Engine Lawn Tractor

Model # 661 Official MTD lawn tractor

Here are the diagrams and repair parts for Official MTD 661 lawn tractor, 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 482 parts  |
Lawn & Garden Equipment Hex Flange Nut (replaces 753-05549, 912-0417a) 712-0417A
Lawn & garden equipment hex flange nut (replaces 753-05549, 912-0417a)

Part #712-0417A

BEST SELLER
$8.24 | 
11% OFF Phone Price : $9.24
In Stock
Lawn Mower Dust Cover 731-0484A
#37

Steering diagram

Lawn mower dust cover

Part #731-0484A

Replaced by #931-0484A

?
Manufacturer substitution
This part replaces 731-0484A. Substitute parts can look different from the original.
BEST SELLER
$7.40 | 
12% OFF Phone Price : $8.40
In Stock
Yard-man Lawn & Garden Equipment Hex Patch Bolt (replaces 910-1309) 710-1309
#43

Steering diagram

Yard-man lawn & garden equipment hex patch bolt (replaces 910-1309)

Part #710-1309

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This item is not returnable
$4.76 | 
17% OFF Phone Price : $5.76
In Stock
Joint Assembly 723-0448
Joint assembly

Part #723-0448

Replaced by #923-0448A

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Manufacturer substitution
This part replaces 723-0448. Substitute parts can look different from the original.
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$22.71 | 
21% OFF Phone Price : $28.71
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Cap 748-0389
#46

Steering diagram

Cap

Part #748-0389

Replaced by #948-0389

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Manufacturer substitution
This part replaces 748-0389. Substitute parts can look different from the original.
BEST SELLER
$7.69 | 
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In Stock
Extension Spring 732-0384
#66

Drive diagram

Extension spring

Part #732-0384

Replaced by #932-0384

?
Manufacturer substitution
This part replaces 732-0384. Substitute parts can look different from the original.
This item is not returnable
$18.62 | 
10% OFF Phone Price : $20.62
In Stock
Air Valve 734-0255
#58

Drive diagram

Air valve

Part #734-0255

Replaced by #934-0255

?
Manufacturer substitution
This part replaces 734-0255. Substitute parts can look different from the original.
This item is not returnable
$5.43 | 
16% OFF Phone Price : $6.43
In Stock
Aircap Lawn Tractor Screw (replaces 150011, 910-0134) 710-0134
#28

Seat and main frame diagram

Aircap lawn tractor screw (replaces 150011, 910-0134)

Part #710-0134

This item is not returnable
$6.55 | 
13% OFF Phone Price : $7.55
In Stock
Lawn & Garden Equipment Carriage Bolt (replaces 1186069, 583108, 706-101080, 706-10602-12, 791-182213) 710-0703
#15

Grille/ hood and fender diagram

Lawn & garden equipment carriage bolt (replaces 1186069, 583108, 706-101080, 706-10602-12, 791-182213)

Part #710-0703

This item is not returnable
$6.46 | 
13% OFF Phone Price : $7.46
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Yard Machines Lawn Tractor Bolt (replaces 01000668, 1982728, 1983620, 43001, 715326, 910-0253, 9711, B1100046, Gw-325284, Gw-750a, Gw-90012, Gw-9711, Gw-98068, Gw-98-068, Gw-b1100046, Gw-b70235, Gw-m6520008, Gw-pt/01395/00, Gw-pt/80153/00, Gw-t70235, Wd- 710-0514
#75

Seat and main frame diagram

Yard machines lawn tractor bolt (replaces 01000668, 1982728, 1983620, 43001, 715326, 910-0253, 9711, b1100046, gw-325284, gw-750a, gw-90012, gw-9711, gw-98068, gw-98-068, gw-b1100046, gw-b70235, gw-m6520008, gw-pt/01395/00, gw-pt/80153/00, gw-t70235, wd-

Part #710-0514

This item is not returnable
$5.33 | 
16% OFF Phone Price : $6.33
In Stock

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