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MTD
Front-Engine Lawn Tractor

Model # 663 Official MTD lawn tractor

Here are the diagrams and repair parts for Official MTD 663 lawn tractor, as well as links to manuals and error code tables, if available.

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  • 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”.

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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 714 parts  |
Lawn Mower Blade 742-0616A
#8A

Spindle assembly diagram

Lawn mower blade

Part #742-0616A

Replaced by #942-0616A

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Manufacturer substitution
This part replaces 742-0616A. Substitute parts can look different from the original.
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Lawn Tractor Blade 742-0616
#23

Deck "g" diagram

Lawn tractor blade

Part #742-0616

Replaced by #942-0616A

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Manufacturer substitution
This part replaces 742-0616. Substitute parts can look different from the original.
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Gasket 721-0208
Gasket

Part #721-0208

Replaced by #692236

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Manufacturer substitution
This part replaces 721-0208. Substitute parts can look different from the original.
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Ace Lawn & Garden Equipment Self-tapping Bolt, 5/16-18 X 3/4-in (replaces 1724491, 1740496, 1909304, 910-1260a, Gw-7101260) 710-1260A
Ace lawn & garden equipment self-tapping bolt, 5/16-18 x 3/4-in (replaces 1724491, 1740496, 1909304, 910-1260a, gw-7101260)

Part #710-1260A

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$4.25 | 
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Hex Screw 710-1260
Hex screw

Part #710-1260

Replaced by #710-1260A

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Manufacturer substitution
This part replaces 710-1260. Substitute parts can look different from the original.
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Steering Shaft 738-0919
Steering shaft

Part #738-0919

Replaced by #738-0919B

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Manufacturer substitution
This part replaces 738-0919. Substitute parts can look different from the original.
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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

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Yard Machines Lawn & Garden Equipment Bell Washer (replaces 936-0242) 736-0242
Yard machines lawn & garden equipment bell washer (replaces 936-0242)

Part #736-0242

This item is not returnable
$6.58 | 
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Lawn Tractor Hex Bolt (replaces 910-0427, 910-3144) 710-3144
#10

Blades diagram

Lawn tractor hex bolt (replaces 910-0427, 910-3144)

Part #710-3144

This item is not returnable
$5.64 | 
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Sears Lawn Tractor Screw 710-0627
Sears lawn tractor screw

Part #710-0627

This item is not returnable
$6.47 | 
13% OFF Phone Price : $7.47
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