Rear-Engine Riding Mower

Model # 17AF2ACK099 Official MTD zero-turn riding lawn mower

Here are the diagrams and repair parts for Official MTD 17AF2ACK099 zero-turn riding lawn mower, as well as links to manuals and error code tables, if available.

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17AF2ACK099 Riding Mowers & Tractors
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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$2.82
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Lawn & Garden Equipment Hex Flange Nut (replaces 753-05549, 912-0417a) 712-0417A
#25

Deck/spindle pulley diagram

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

Part #712-0417A

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$8.23
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Lawn Tractor Ignition Key 625-04124
#20

Frame 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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$19.56
9% OFF Phone Price : $21.56
Back Order
Lawn Tractor Gauge Wheel 734-04155
#37

Deck/spindle pulley diagram

Lawn tractor gauge wheel

Part #734-04155

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$23.42
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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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$5.27
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Lawn Tractor Shoulder Bolt (replaces 738-3056) 938-3056
#47

Deck/spindle pulley diagram

Lawn tractor shoulder bolt (replaces 738-3056)

Part #938-3056

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Lawn Tractor Screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599) 710-0599
Lawn tractor screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599)

Part #710-0599

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$4.91
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Lawn Tractor Shoulder Spacer (replaces 738-04162a, 73804162c) 738-04162C
#9

Frame diagram

Lawn tractor shoulder spacer (replaces 738-04162a, 73804162c)

Part #738-04162C

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$15.71
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Roller 731-05679
#34

Deck/spindle pulley diagram

Roller

Part #731-05679

Replaced by #731-05679B

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Manufacturer substitution
This part replaces 731-05679. Substitute parts can look different from the original.
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$27.80
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Solenoid-12v 725-04439
#19

Frame diagram

Solenoid-12v

Part #725-04439

Replaced by #725-04439B

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Manufacturer substitution
This part replaces 725-04439. Substitute parts can look different from the original.
$40.47
13% OFF Phone Price : $46.47
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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: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…

Main causes: faulty battery, bad alternator…

Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…

Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clo…

Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…

Main causes: shift lever needs adjustment, neutral control needs adjustment…

Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a…

Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, …

Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tun…

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 a mandrel assembly on a riding lawn mower

How to replace a mandrel assembly on a riding lawn mower

Replace the mandrel assembly if the blade shaft vibrates or doesn't spin.…

Repair difficulty
Time required
 30 minutes or less
How to replace the flywheel key on a riding lawn mower

How to replace the flywheel key on a riding lawn mower

If the engine won't restart after hitting a stump or rock, the problem could be a sheared flywheel key. Follow these ste…

Repair difficulty
Time required
 60 minutes or less
How to replace a riding lawn mower ignition coil

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 difficulty
Time required
 30 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.

How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Riding lawn mower engine clicks but doesn't turn over video

Riding lawn mower engine clicks but doesn't turn over video

Check the starter solenoid, starter motor, wiring, battery and engine.…