Craftsman
Front-Engine Lawn Tractor

Model #917273821 Official Craftsman tractor dyt4000

Here are the diagrams and repair parts for Craftsman 917273821 tractor dyt4000, as well as links to manuals and error code tables, if available.

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Owner’s manual

Showing 10 of 466 parts

Lawn Tractor 42-in Deck High-Lift Blade (replaces 138971)#11B

Mower deck Diagram

Lawn tractor 42-in deck high-lift blade

Part #138971
Replaced by #532138971
?
Manufacturer substitution
This part replaces 138971. Substitute parts can look different from the original.
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In Stock
$11.72 | 
27% OFF 
MSRP: $16.00
Lawn Tractor Axle Flange Bearing (replaces 532009040, 5320090-40, 532124959, 577203109, 5920H, 5920H1, P-1246, P-1622)#7

Wheels and tires Diagram

In Stock
$5.10 | 
44% OFF 
MSRP: $9.09
Lawn Tractor 42-in Deck Mulching Blade#11

Mower deck Diagram

Lawn tractor mulching blade

Part #134149
Replaced by #594892701
?
Manufacturer substitution
This part replaces 134149. Substitute parts can look different from the original.
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In Stock
$14.21 | 
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MSRP: $18.99
Lawn Tractor Self-Tapping Bolt (replaces 173984)#30

Mower deck Diagram

Lawn tractor bolt

Part #173984
Replaced by #584953901
?
Manufacturer substitution
This part replaces 173984. Substitute parts can look different from the original.
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This item is not returnable
In Stock
$3.29 | 
23% OFF 
Phone Price: $4.29
Lawn Tractor Axle Cap (replaces 104757X428)#11

Wheels and tires Diagram

Lawn tractor axle cap

Part #104757X428
Replaced by #532104757
?
Manufacturer substitution
This part replaces 104757X428. Substitute parts can look different from the original.
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In Stock
$2.40 | 
31% OFF 
MSRP: $3.48
Lawn Mower Lock Nut, 3/8-in (replaces 409149, 532409148)

See All Related Diagrams

Lock nut

Part #73900600
Replaced by #532409149
?
Manufacturer substitution
This part replaces 73900600. Substitute parts can look different from the original.
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This item is not returnable
Back Order
$2.49 | 
29% OFF 
Phone Price: $3.49
Lawn Mower Lock Nut, 3/8-in (replaces 409149, 532409148)

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Hex flange lock nut

Part #145212
Replaced by #532409149
?
Manufacturer substitution
This part replaces 145212. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
Back Order
$2.49 | 
29% OFF 
Phone Price: $3.49
Lawn Tractor Mandrel Pulley (replaces 153535, 153535MS, 153535WA, 153535X431, 177865, 532173436, 5321734-36, 539112171, 577203105)#32

Mower deck Diagram

Lawn tractor mandrel pulley

Part #153535
Replaced by #173436
?
Manufacturer substitution
This part replaces 153535. Substitute parts can look different from the original.
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In Stock
$12.65 | 
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MSRP: $24.76
Lawn Tractor Mandrel Assembly (replaces 130794CS, 130794MS, 130794WA, 130797, 180074, 532130794, 5321307-94, 532183170, 539110158, 577203113)

#NI09

All parts Diagram

Lawn Tractor Deflector Shield (replaces 130968, 532171859)#27

Mower deck Diagram

Lawn tractor deflector shield

Part #130968X428
Replaced by #532130968
?
Manufacturer substitution
This part replaces 130968X428. Substitute parts can look different from the original.
BEST SELLER
In Stock
$32.24 | 
13% OFF 
Phone Price: $37.24

Symptoms common to all riding mowers & tractors

Choose a symptom to see related riding mower and lawn tractor repairs.

Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim
Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, dirty carburetor
Main causes: shift lever needs adjustment, neutral control needs adjustment
Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged mandrel pulleys
Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components
Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, broken fuel line
Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a tune up
Main causes: faulty battery, bad alternator
Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tune up

Repair guides common to all riding mowers & tractors

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

January 1, 2015
By Lyle Weischwill
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
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower blade

If a blade on your mower is dull or bent, replace it following the steps in this repair guide.

Repair difficulty
Time required
 30 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower fuel filter

Help your mower run better by replacing the fuel filter during your riding mower's annual tune-up.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all 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.

August 6, 2020

How to remove a lawn mower blade using a removal tool

By Lyle Weischwill

Learn how a blade removal tool makes replacing the blade easier and safer

April 9, 2019

Riding mower parts and supplies to stock up on video

By Kim Hillegass

Keep these 6 things on hand to keep the mower season running smoothly.

March 1, 2016

Charging a battery in a riding lawn mower video

By Lyle Weischwill

Learn how to use a battery charger if your mower battery is dead.