Craftsman
Front-Engine Lawn Tractor

Model # 917990380 Official Craftsman tractor

Here are the diagrams and repair parts for Official Craftsman 917990380 tractor, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 262 parts  |

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 Blade Engagement Cable 584243501
#152

Mower deck diagram

Lawn tractor blade engagement cable

Part #584243501

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Wizard Lawn Tractor Tire Valve Stem (replaces 20267, 24167, 24297, 24373, 3930j, 400162, 407229, 493215, 532065139, 5320651-39, 532124718, 55-21v, 56-21v, 65333, 74289, 76-21v, 77-21v, 78-21v, 795r) 65139
#2

Wheels & tires diagram

Wizard lawn tractor tire valve stem (replaces 20267, 24167, 24297, 24373, 3930j, 400162, 407229, 493215, 532065139, 5320651-39, 532124718, 55-21v, 56-21v, 65333, 74289, 76-21v, 77-21v, 78-21v, 795r)

Part #65139

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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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Tuff Torq Lawn Tractor Belt Keeper 587798401
#153

Transaxle diagram

Tuff torq lawn tractor belt keeper

Part #587798401

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Lawn Tractor Dash Wire Harness (replaces 585849401) 581023101
#40

Electrical diagram

Lawn tractor dash wire harness (replaces 585849401)

Part #581023101

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Lawn Tractor Bolt (replaces 171852, 587904780) 587907801
#21

Seat assembly diagram

Lawn tractor bolt (replaces 171852, 587904780)

Part #587907801

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Lawn Tractor Deck Decal (replaces 160396) 581580001
#14

Decals diagram

Lawn tractor deck decal (replaces 160396)

Part #581580001

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Lawn Tractor Ground Drive Clutch Link (replaces 194323) 582217001
#188

Drive diagram

Lawn tractor ground drive clutch link (replaces 194323)

Part #582217001

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Lawn Tractor Torque Strap (replaces 408393) 581550701
#80

Drive diagram

Lawn tractor torque strap (replaces 408393)

Part #581550701

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

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

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

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

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

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.

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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.…

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.…

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.…

Repair difficulty
Time required
 60 minutes or less

Effective articles & videos to help repair your riding mowers & tractors

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

Riding mower and tractor common questions

Riding mower and tractor common questions

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