Engine & Drivetrain

Model # 143171 Official Craftsman differential

Here are the diagrams and repair parts for Official Craftsman 143171 differential, as well as links to manuals and error code tables, if available.

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Browse Parts for
143171 Riding Mowers & Tractors
Sprocket 786043
#9

Unit parts diagram

Sprocket

Part #786043

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

Bevel Gear 778067
#4

Unit parts diagram

Bevel gear

Part #778067

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

Screw 792044
#11

Unit parts diagram

Screw

Part #792044

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

Drive Pin 786040
#6

Unit parts diagram

Drive pin

Part #786040

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

Thrust Wsher 780096
#7

Unit parts diagram

Thrust wsher

Part #780096

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

Bushing 780077
#13

Unit parts diagram

Bushing

Part #780077

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

Gear 778068
#5

Unit parts diagram

Gear

Part #778068

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

Washer 780001
#8

Unit parts diagram

Washer

Part #780001

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

Housing 774345
#1A

Unit parts diagram

Housing

Part #774345

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

Housing 774344

#NI

All parts diagram

Housing

Part #774344

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

Most common symptoms to help you fix your freestanding freezers

Choose a symptom to see related freezer repairs.

Main causes: excessive frost, bad defrost heater, bad defrost bi-metal, control system failure, low refrigerant charge, …

Main causes: lack of power, bad compressor, refrigerant leak, bad thermistor, defrost system failure, dirty condenser co…

Main causes: compressor failure, no refrigerant, faulty sensor, control failure, broken defrost heater, bad defrost bi-m…

Main causes: dirty condenser coils, condenser fan failure, dirty bottom front grill, leaky door or lid gasket…

Main causes: lack of power, control system failure, broken compressor start relay, locked up compressor, compressor moto…

Main causes: damaged door or lid gasket, cracked cabinet liner, bad defrost bi-metal thermostat, broken defrost heater, …

Main causes: burned out light bulb, bad door or lid switch, faulty LED light board, wiring failure, control system failu…

Main causes: leaky door or lid gasket, broken defrost heater, bad defrost bi-metal thermostat, defrost control failure, …

Repair guides for upright freezers

How to replace a freezer defrost heater

How to replace a freezer defrost heater

If frost builds up on the freezer evaporator because the defrost heater isn’t working, follow these step-by-step instruc…

Repair difficulty
Time required
 45 minutes or less
How to replace a freezer LED light board

How to replace a freezer LED light board

The LED lights illuminate the interior of the freezer when you open the door. It takes just a few minutes to replace the…

Repair difficulty
Time required
 15 minutes or less
How to replace a freezer evaporator fan

How to replace a freezer evaporator fan

Air won’t circulate to cool the freezer properly when the evaporator fan fails. Follow these step-by-step instructions t…

Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your freestanding freezers

Use the advice and tips in these articles and videos to get the most out of your freezer.

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.…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

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Freezer common questions

Freezer common questions

Benefit from other people's experience by checking on these frequently asked questions about freezers.…