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Craftsman
Front-Engine Lawn Tractor

Model # 917270821 Official Craftsman 42" 19.5-hp electric start automatic lawn tractor

Here are the diagrams and repair parts for Official Craftsman 917270821 42" 19.5-hp electric start automatic lawn tractor, as well as links to manuals and error code tables, if available.

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

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Owner’s manual
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Model diagram and schematic

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Showing 10 of 620 parts  |
Lawn Tractor Mulching Blade 134149
#11

Mower deck diagram

Lawn tractor mulching blade

Part #134149

Replaced by #532134149

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Hub Cap 104757X
#11

Wheels and tires diagram

Hub cap

Part #104757X

Replaced by #532104757

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Hex Flange Lock Nut 145212
#49

Lift assembly diagram

Hex flange lock nut

Part #145212

Replaced by #532409149

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Washer Head Thread Rolling Screw 157722
#30

Mower deck diagram

Washer head thread rolling screw

Part #157722

Replaced by #584953901

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This part replaces 157722. Substitute parts can look different from the original.
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Lawn Tractor Mandrel Pulley 153535
#32

Mower deck diagram

Lawn tractor mandrel pulley

Part #153535

Replaced by #173436

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Lawn Tractor Ground Drive Belt, 1/2 X 82-in 140294
#57

Ground drive diagram

Lawn tractor ground drive belt, 1/2 x 82-in

Part #140294

Replaced by #532140294

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Solenoid 145673
#43

Electrical diagram

Solenoid

Part #145673

Replaced by #532146154

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Shoulder Bolt 137644
#116

Mower deck diagram

Shoulder bolt

Part #137644

Replaced by #596434404

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Tire 106222X
#3

Wheels and tires diagram

Tire

Part #106222X

Replaced by #532122073

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Washer, 13/32 X 1-1/4 X 12 19132012
#72

Ground drive diagram

Washer, 13/32 x 1-1/4 x 12

Part #19132012

Replaced by #596134901

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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.

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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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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 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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Why does my riding mower creep in neutral?

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

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Why does my riding mower run rough or misfire?

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

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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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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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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 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.…

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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…

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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…

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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.

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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.…

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Top questions about Sears and Sears PartsDirect

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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.…

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