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MTD
Front-Engine Lawn Tractor

Model # 13AL78ST299 Official MTD tractor

Here are the diagrams and repair parts for Official MTD 13AL78ST299 tractor, as well as links to manuals and error code tables, if available.

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Owner’s manual
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Model diagram and schematic

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ALL PARTS
Showing 10 of 486 parts  |
Lawn & Garden Equipment Cotter Pin, 1/4- To 5/16-in 714-04040
Lawn & garden equipment cotter pin, 1/4- to 5/16-in

Part #714-04040

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2-in-1 Blade 742-04290
#44

Deck/spindle pulley diagram

2-in-1 blade

Part #742-04290

Replaced by #942-04290A

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Manufacturer substitution
This part replaces 742-04290. Substitute parts can look different from the original.
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$22.79 | 
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Lawn Mower Cable 946-04173C
#22

Battery/frame diagram

Lawn mower cable

Part #946-04173C

Replaced by #946-04173E

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Manufacturer substitution
This part replaces 946-04173C. 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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Exhaust Gasket BS-692236
#7

331877-0869-g5 engine diagram

Exhaust gasket

Part #BS-692236

Replaced by #692236

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Manufacturer substitution
This part replaces BS-692236. Substitute parts can look different from the original.
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Lawn Tractor Ignition Key 625-04124
#44

Bumper/hood diagram

Lawn tractor ignition key

Part #625-04124

Replaced by #925-1745A

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Manufacturer substitution
This part replaces 625-04124. 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
#4

Transmission diagram

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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Lawn Tractor Bearing (replaces 741-04124) 941-04124
#16

Steering/wheel 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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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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