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MTD
Front-Engine Lawn Tractor

Model # 13AJ771S031 Official MTD lawn tractor

Here are the diagrams and repair parts for Official MTD 13AJ771S031 lawn tractor, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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Showing 10 of 402 parts  |
Lawn Tractor Blade Drive Belt, 1/2 X 103-1/16-in 954-04219
#54

46" deck diagram

Lawn tractor blade drive belt, 1/2 x 103-1/16-in

Part #954-04219

Replaced by #490-501-M009

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Manufacturer substitution
This part replaces 954-04219. Substitute parts can look different from the original.
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Lawn Tractor 46-in Deck 2-in-1 Blade 942-04290
#44

46" deck diagram

Lawn tractor 46-in deck 2-in-1 blade

Part #942-04290

Replaced by #942-04290A

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Manufacturer substitution
This part replaces 942-04290. Substitute parts can look different from the original.
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Yard Machines Lawn & Garden Equipment Lock Nut, 5/16-18 (replaces 753-05591) 712-04063
Yard machines lawn & garden equipment lock nut, 5/16-18 (replaces 753-05591)

Part #712-04063

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Lawn Tractor Ignition Key (replaces 504-00621, 625-04124, 625-05000, 625-05002, 725-05228, 925-1745, 925-2054a) 925-1745A
Lawn tractor ignition key (replaces 504-00621, 625-04124, 625-05000, 625-05002, 725-05228, 925-1745, 925-2054a)

Part #925-1745A

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Lawn Tractor Bearing (replaces 741-04124) 941-04124
#15

Front end steering diagram

Lawn tractor bearing (replaces 741-04124)

Part #941-04124

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Yard Machines Lawn & Garden Equipment Nut 712-04064
Yard machines lawn & garden equipment nut

Part #712-04064

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Lawn Tractor Gauge Wheel 734-04155
Lawn tractor gauge wheel

Part #734-04155

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Yard Machines Lawn Tractor Flange Nut (replaces 00012173, Wd-129-103) 712-04065
Yard machines lawn tractor flange nut (replaces 00012173, wd-129-103)

Part #712-04065

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Lawn Tractor Mandrel Assembly 918-04822A
#1

42" deck diagram

Lawn tractor mandrel assembly

Part #918-04822A

Replaced by #918-04822B

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This part replaces 918-04822A. Substitute parts can look different from the original.
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Primary Ground Drive Belt 954-04249
#37

Transmission diagram

Primary ground drive belt

Part #954-04249

Replaced by #490-501-M006

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