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Husqvarna
Riding Mowers & Tractors

Model # 502120 Official Husqvarna tractor

Here are the diagrams and repair parts for Official Husqvarna 502120 tractor, as well as links to manuals and error code tables, if available.

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Owner’s manual
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Showing 10 of 364 parts  |
Lawn Tractor Blade Drive Belt, 1/2 X 95-1/4-in (replaces 144959) 532144959
#68

Mower deck diagram

Lawn tractor blade drive belt, 1/2 x 95-1/4-in (replaces 144959)

Part #532144959

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Lawn Tractor Self-tapping Bolt (replaces 173984) 584953901
#41

Mower deck diagram

Lawn tractor self-tapping bolt (replaces 173984)

Part #584953901

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Lawn Tractor Pivot Bolt (replaces 436877, 442147) 532442147
#82

Steering assembly diagram

Lawn tractor pivot bolt (replaces 436877, 442147)

Part #532442147

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Idler.flat.910.offset 532194327
#50

Drive diagram

Idler.flat.910.offset

Part #532194327

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Lawn Tractor Crown Lock Nut, 3/8-in 873540600
#15

Steering assembly diagram

Lawn tractor crown lock nut, 3/8-in

Part #873540600

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Lawn Tractor Seat Compression Spring (replaces 124181x) 587613301
#7

Seat assembly diagram

Lawn tractor seat compression spring (replaces 124181x)

Part #587613301

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Lawn Tractor Mandrel Bearing 585323901
#15

Mower deck diagram

Lawn tractor mandrel bearing

Part #585323901

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Lawn Tractor Fuse, 20-amp (replaces Std391020) 532175158
#26

Electrical diagram

Lawn tractor fuse, 20-amp (replaces std391020)

Part #532175158

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Craftsman Lawn & Garden Equipment Bolt (replaces 17000510) 817000510
#113

Mower deck diagram

Craftsman lawn & garden equipment bolt (replaces 17000510)

Part #817000510

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Lawn Tractor Tire, Rear, 20 X 8-in (replaces 138468) 532138468
#9

Wheels & tires diagram

Lawn tractor tire, rear, 20 x 8-in (replaces 138468)

Part #532138468

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Most common symptoms to help you fix your riding mowers & tractors

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Why is my riding mower not cutting evenly?

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

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Why won't my riding mower start?

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

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Why is the steering loose on my riding mower?

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

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How do I fix a flat tire on my riding mower?

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

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Why won't my riding mower cut grass?

Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…

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How do I charge a dead battery on my riding mower?

Main causes: faulty battery, bad alternator…

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Why does my riding mower deck vibrate?

Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components…

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Why does my riding mower creep in neutral?

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

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Why won't my riding mower move?

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

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

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How to replace the seat switch on a riding lawn mower

How to replace the seat switch on a riding lawn mower

Follow the steps in this guide to install a new riding mower seat switch in about 15 minutes.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a riding lawn mower spark plug

How to replace a riding lawn mower spark plug

If the engine is hard to start or if the spark plug electrode is burnt or cracked, take 15 minutes to replace it.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a riding lawn mower rear tire

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.…

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Repair difficulty
Time required
 60 minutes or less

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

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Riding mower and tractor common questions

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