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Craftsman
Front-Engine Lawn Tractor

Model # 917990480 Official Craftsman tractor

Here are the diagrams and repair parts for Official Craftsman 917990480 tractor, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 101 parts  |
Woodruff Key 792047
#8A

Transaxle diagram

Woodruff key

Part #792047

The manufacturer no longer makes this part, and there's no substitute part

Nut 792075
#43

Transaxle diagram

Nut

Part #792075

The manufacturer no longer makes this part, and there's no substitute part

Retainer Ring 792035
#27

Transaxle diagram

Retainer ring

Part #792035

The manufacturer no longer makes this part, and there's no substitute part

Spur Gear 778369
#6A

Transaxle diagram

Spur gear

Part #778369

The manufacturer no longer makes this part, and there's no substitute part

Retainer Ring 788040
#28

Transaxle diagram

Retainer ring

Part #788040

The manufacturer no longer makes this part, and there's no substitute part

Parts Manual 587765528

#NI08

All parts diagram

Parts manual

Part #587765528

The manufacturer no longer makes this part, and there's no substitute part

Engine, Briggs & Stratton, Model #120k02 N/P
Engine, briggs & stratton, model #120k02

Part #N/P

The manufacturer no longer makes this part, and there's no substitute part

Trim, Right 442422
#315

Chassis assembly diagram

Trim, right

Part #442422

The manufacturer no longer makes this part, and there's no substitute part

Machine Screw 442423
#314

Chassis assembly diagram

Machine screw

Part #442423

The manufacturer no longer makes this part, and there's no substitute part

Lawn Tractor Screw 17060512
Lawn tractor screw

Part #17060512

The manufacturer no longer makes this part, and there's no substitute part

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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Most common repair guides to help fix your riding mowers & tractors

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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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 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
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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
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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.…

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

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