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MTD 13A878XS099 lawn tractor Parts
Here are the diagrams and repair parts for MTD 13A878XS099 lawn tractor, as well as links to manuals and error code tables, if available.
Owner’s manual
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Browse Parts for 13A878XS099 Lawn Tractor
Hood/plenum diagram
Lawn Tractor Hood Pivot Bracket, Right
Part #783-05328A-0637Replaced by #783-05328B-0637
Manufacturer substitutionThis part replaces 783-05328A-0637. Substitute parts can look different from the original.In Stock$60.87
Qty
Transmission diagram
Lawn Tractor Variable-speed Guide
Part #683-04522Replaced by #783-06227A
Manufacturer substitutionThis part replaces 683-04522. Substitute parts can look different from the original.In Stock$26.0419% OFF Phone Price : $32.04
QtySteering diagram
Steering Wheel Cap
Part #731-06825Replaced by #731-06825A
Manufacturer substitutionThis part replaces 731-06825. Substitute parts can look different from the original.This item is not returnableIn Stock$9.5010% OFF Phone Price : $10.50QtyBattery/lift diagram
Frame Assembly
Part #683-05139-0637Replaced by #683-05139A-0637
Manufacturer substitutionThis part replaces 683-05139-0637. Substitute parts can look different from the original.In Stock$314.31QtyTransmission diagram
Auto-drive Bracket Assembly
Part #683-04606Replaced by #783-06568A
Manufacturer substitutionThis part replaces 683-04606. Substitute parts can look different from the original.In Stock$57.94QtyLawn & Garden Equipment Cable Tie
Part #725-0157Replaced by #726-0178
Manufacturer substitutionThis part replaces 725-0157. Substitute parts can look different from the original.This item is not returnableIn Stock$25.35QtyHood/plenum diagram
Lawn Tractor Hood Pivot Bracket
Part #783-08491-4044Replaced by #783-08491A-4044
Manufacturer substitutionThis part replaces 783-08491-4044. Substitute parts can look different from the original.This item is not returnableIn Stock$21.9942% OFF Was : $38.19QtyFuel tank/upper dash panel diagram
Gas Tank Support Bracket
Part #783-07083-0637Replaced by #783-07083A-0637
Manufacturer substitutionThis part replaces 783-07083-0637. Substitute parts can look different from the original.In Stock$40.62QtyHood/plenum diagram
Hood
Part #931-09838Replaced by #931-09838A
Manufacturer substitutionThis part replaces 931-09838. Substitute parts can look different from the original.In Stock$67.42QtyFuel tank/upper dash panel diagram
Bracket
Part #783-06785A-0637Replaced by #783-06785C-0637
Manufacturer substitutionThis part replaces 783-06785A-0637. Substitute parts can look different from the original.In Stock$17.49Qty
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Most common symptoms to help you fix your riding mowers & tractors
Choose a symptom to see related riding mower and lawn tractor repairs.
Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…
Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clo…
Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…
Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, …
Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…
Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tun…
Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, …
Main causes: faulty battery, bad alternator…
Main causes: shift lever needs adjustment, neutral control needs adjustment…
Most common repair guides to help fix your riding mowers & tractors
These step-by-step repair guides will help you safely fix what’s broken on your riding mower or lawn tractor.
How to replace the starter solenoid on a riding lawn mower
Replace the starter solenoid if it doesn't click when you turn the ignition key.…
Repair time and Difficulty
30 minutes or less
How to replace a riding lawn mower ignition coil
If you're not getting spark from a good spark plug, the problem could be the ignition coil. Follow these step-by-step in…
Repair time and Difficulty
30 minutes or less
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 time and Difficulty
15 minutes or less
Effective articles & videos to help repair your 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.
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
Learn some of the most common symbols found in a wiring diagram and what they mean.…
Learn how to connect cables safely to jump-start your mower’s battery.…
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