MTD
Front-Engine Lawn Tractor

Model #13AD771G731 Official MTD lawn tractor

Here are the diagrams and repair parts for MTD 13AD771G731 lawn tractor, as well as links to manuals and error code tables, if available.

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Owner’s manual

Showing 10 of 436 parts

Lawn Tractor Blade Drive Belt, 1/2 x 96-1/2-in#44

42" deck Diagram

V-belt

Part #754-04060B
Replaced by #954-04060C
?
Manufacturer substitution
This part replaces 754-04060B. Substitute parts can look different from the original.
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In Stock
$40.40 | 
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Phone Price: $45.40
Lawn & Garden Equipment Lock Nut, 5/16-18 (replaces 753-05591)

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

Part #712-04063
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$3.26 | 
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MSRP: $4.90
Lawn Tractor 42-in Deck 3-in-1 Blade (replaces 742-0616A, 742-0616A-0637, 942-04126, 942-0616)#38

42" deck Diagram

Lawn mower blade

Part #742-0616A
Replaced by #942-0616A
?
Manufacturer substitution
This part replaces 742-0616A. Substitute parts can look different from the original.
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MSRP: $31.00
Lawn Tractor Ignition Key (replaces 504-00621, 625-04124, 625-05000, 625-05002, 725-05228, 925-1745, 925-2054A)#30

Bumper & hood - models 762, 772 Diagram

Ignition key

Part #725-1744
Replaced by #925-1745A
?
Manufacturer substitution
This part replaces 725-1744. Substitute parts can look different from the original.
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MSRP: $9.66
Lawn & Garden Equipment Hex Flange Nut (replaces 753-05549, 912-0417A)

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Lawn & garden equipment hex flange nut (replaces 753-05549, 912-0417a)

Part #712-0417A
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Lawn & Garden Equipment Engine Exhaust Gasket (replaces 272293, 91309, BS-692236)#27

Engines Diagram

Gasket

Part #721-0208
Replaced by #692236
?
Manufacturer substitution
This part replaces 721-0208. Substitute parts can look different from the original.
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Lawn Tractor Bearing (replaces 741-04124)#15

Steering Diagram

Bearing

Part #741-04124
Replaced by #941-04124
?
Manufacturer substitution
This part replaces 741-04124. Substitute parts can look different from the original.
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Lawn & Garden Equipment Self-Tapping Bolt, 5/16-18 x 3/4-in (replaces 1724491, 1740496, 1909304, 910-1260A, GW-7101260)

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Lawn & Garden Equipment Nut

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Lawn & garden equipment nut

Part #712-04064
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Lawn Tractor Flange Nut (replaces 00012173, WD-129-103)

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Lawn tractor flange nut (replaces 00012173, wd-129-103)

Part #712-04065
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In Stock
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MSRP: $5.00

Symptoms common to all riding mowers & tractors

Choose a symptom to see related riding mower and lawn tractor repairs.

Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim
Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, dirty carburetor
Main causes: shift lever needs adjustment, neutral control needs adjustment
Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged mandrel pulleys
Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components
Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, broken fuel line
Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a tune up
Main causes: faulty battery, bad alternator
Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tune up

Repair guides common to all riding mowers & tractors

These step-by-step repair guides will help you safely fix what’s broken on your riding mower or lawn tractor.

January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower rear tire

Your mower can’t run on a damaged rear tire. Here’s how to install a new one.

Repair difficulty
Time required
 60 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower blade

If a blade on your mower is dull or bent, replace it following the steps in this repair guide.

Repair difficulty
Time required
 30 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower fuel filter

Help your mower run better by replacing the fuel filter during your riding mower's annual tune-up.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all riding mowers & tractors

Use the advice and tips in these articles and videos to get the most out of your riding mower or lawn tractor.

August 6, 2020

How to remove a lawn mower blade using a removal tool

By Lyle Weischwill

Learn how a blade removal tool makes replacing the blade easier and safer

April 9, 2019

Riding mower parts and supplies to stock up on video

By Kim Hillegass

Keep these 6 things on hand to keep the mower season running smoothly.

March 1, 2016

Charging a battery in a riding lawn mower video

By Lyle Weischwill

Learn how to use a battery charger if your mower battery is dead.