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13AL77XT099 MTD Lawn Tractor - Overview

Sections of the 13AL77XT099

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Engine Oil Seal – Part Number: 795387
Engine Oil Seal
★★★★★
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(2)
PartSelect #: PS9151828
Manufacturer #: 795387
This OEM Seal-Oil (PTO Side), also called the Oil Seal, is a Black, Nitrile Rubber, 2/14 O.D., individually sold part which is installed using a Seal Puller. Customers rate the installation difficulty...
$7.88
  In Stock
Order now and your part arrives in 2-3 business days!
Snow Blower Bow Tie Cotter Pin – Part Number: 714-04040
Snow Blower Bow Tie Cotter Pin
PartSelect #: PS9096195
Manufacturer #: 714-04040
Sourced directly from the manufacturer, this replacement part is designed to secure otherwise loose parts in place, allowing the machine to operate properly. This Bow Tie Cotter Pin is not part of a k...
$3.99
  In Stock
Order now and your part arrives in 2-3 business days!
Spark Plug – Part Number: 491055S
Spark Plug
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(2)
PartSelect #: PS9281094
Manufacturer #: 491055S
$4.99
  In Stock
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Engine Oil Seal – Part Number: 391086S
Engine Oil Seal
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(1)
PartSelect #: PS9277860
Manufacturer #: 391086S
The Oil Seal is a manufacturer-approved rubber part which provides a seal between the crankcase and crankshaft by attaching around the axle shaft on the crankhouse housing. Installation is rated as "M...
$6.59
  In Stock
Order now and your part arrives in 2-3 business days!
Snow Blower Locking Flange Nut – Part Number: 712-04063
Snow Blower Locking Flange Nut
PartSelect #: PS9092936
Manufacturer #: 712-04063
This nut is a manufacturer-approved replacement part for various lawn and garden equipment. It is sold individually, not as part of a kit or assembly. Also referred to as a Lock Nut, it is resistant t...
$5.95
  In Stock
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Engine Valve Gasket Set – Part Number: 794152
Engine Valve Gasket Set
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(1)
PartSelect #: PS9141388
Manufacturer #: 794152
Enhance the performance and longevity of your engine equipment with this high-quality Gasket Set-Valve from the well-renowned brand, Briggs and Stratton. This set comprises of multiple robust gaskets ...
$35.23
  In Stock
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Lawn Mower Hex Washer Head Screw – Part Number: 710-0599
Lawn Mower Hex Washer Head Screw
PartSelect #: PS9298768
Manufacturer #: 710-0599
$4.44
  In Stock
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Engine Oil Filter – Part Number: 696854
Engine Oil Filter
PartSelect #: PS9065087
Manufacturer #: 696854
$14.38
  In Stock
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Engine O-Ring – Part Number: 691917
Engine O-Ring
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(1)
PartSelect #: PS9294749
Manufacturer #: 691917
The Seal-O Ring, also known as the gasket, is red in color, made of rubber, and is an OEM part that requires some skill to replace. This part is designed to create a seal between the carburator and ma...
$4.99
  Special Order
Lawn Mower Self-Tapping Screw – Part Number: 710-04484
Lawn Mower Self-Tapping Screw
PartSelect #: PS9086265
Manufacturer #: 710-04484
$4.06
  In Stock
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Engine Breather Tube – Part Number: 794683
Engine Breather Tube
PartSelect #: PS9306838
Manufacturer #: 794683
$8.91
  In Stock
Order now and your part arrives in 2-3 business days!
Engine Intake Push Rod – Part Number: 692003
Engine Intake Push Rod
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(2)
PartSelect #: PS9294769
Manufacturer #: 692003
$8.61
  In Stock
Order now and your part arrives in 2-3 business days!

Questions And Answers for 13AL77XT099

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Common Symptoms of the 13AL77XT099

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Deck blades will not turn
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Excess blue smoke from engine
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Stopped running. Turned to be a bent intake push rod and broken rocker arm
Removed head. Replaced both rocker arms, intake pus rod, push rod guide exhaust and head gaskets. Torqued head in 3 stages to 216 in/lbs. gapped intake to .004 and exhaust to .006 at TDC

Added oil and gas. Now running great

If you need to replace push rods use steel (exhaust) they are the same length
The engine was a Briggs & Stratton 217802 0113 E10604 (2006 year date code)
I used the following
796189 gasket
272475S gasket
697494 push rod
690822 push rod guide
691751 rocker arms
Parts Used:
Engine Rocker Arm Engine Push Rod Guide
  • Rene from COVINGTON, LA
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    1- 2 hours
  • Tools:
    Nutdriver, Socket set, Wrench set
6 of 9 people found this instruction helpful.
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Oil Drain Sleeve
I wish this was longer...it's only about 6", barely enough to have the oil flow past the metal plate of the riding lawnmower. I'm going to figure out a way to make a permanent extension something like this video would be SO much better https://www.youtube.com/watch?v=G9ZVoeqr6R8&t=79s
Parts Used:
Lawn Mower Oil Drain Sleeve
  • Laurie from RICHLANDS, NC
  • Difficulty Level:
    Very Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Pliers, Socket set, Wrench (Adjustable), Wrench set
4 of 6 people found this instruction helpful.
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Seized bearing and spacer on bolt shaft for idler pulley
Unfortunately I couldn’t find the spacer on the Internet, so I ended up going to the hardware store and buying multiple sizes of spacers and bearings to complete the install. I ended up using a steel spacer with shoulder and two bearings. Way overkill, but worth the three dollars.
Parts Used:
Pulley, Idler, 4.50-In.Dia Spacer-shoulder Lawn Mower Flanged Lock Nut
  • Carl from DECATUR, TX
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers, Socket set, Wrench set
4 of 7 people found this instruction helpful.
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