Craftsman
Engine & Drivetrain

Model # 143794254 Official Craftsman transmission

Here are the diagrams and repair parts for Official Craftsman 143794254 transmission, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 39 parts  |

Screw 792073
#36

Replacement parts diagram

Screw

Part #792073

Replaced by #792073

?
Manufacturer substitution
This part replaces 792073. Substitute parts can look different from the original.
This item is not returnable
$3.40
23% OFF Phone Price : $4.40
In Stock
Spring 792079
#42

Replacement parts diagram

Spring

Part #792079

Replaced by #792079

?
Manufacturer substitution
This part replaces 792079. Substitute parts can look different from the original.
This item is not returnable
$3.40
23% OFF Phone Price : $4.40
In Stock
Lawn & Garden Equipment Needle Bearing 780086
#30

Replacement parts diagram

Lawn & garden equipment needle bearing

Part #780086

Replaced by #780086

?
Manufacturer substitution
This part replaces 780086. Substitute parts can look different from the original.
This item is not returnable
$13.33
13% OFF Phone Price : $15.33
In Stock
Washer 780072
#29

Replacement parts diagram

Washer

Part #780072

Replaced by #780072

?
Manufacturer substitution
This part replaces 780072. Substitute parts can look different from the original.
This item is not returnable
$3.40
23% OFF Phone Price : $4.40
In Stock
Quad Ring 792001
#45

Replacement parts diagram

Quad ring

Part #792001

Replaced by #792001

?
Manufacturer substitution
This part replaces 792001. Substitute parts can look different from the original.
This item is not returnable
In Stock
Screw 792078
#41

Replacement parts diagram

Screw

Part #792078

Replaced by #792078

?
Manufacturer substitution
This part replaces 792078. Substitute parts can look different from the original.
This item is not returnable
In Stock
Shaft 776161
#3

Replacement parts diagram

Shaft

Part #776161

Replaced by #776217

?
Manufacturer substitution
This part replaces 776161. Substitute parts can look different from the original.
$108.19
10% OFF Phone Price : $120.19
In Stock
Roller Chain 786062
#28

Replacement parts diagram

Roller chain

Part #786062

Replaced by #786062A

?
Manufacturer substitution
This part replaces 786062. Substitute parts can look different from the original.
In Stock
Washer 780108
#43

Replacement parts diagram

Washer

Part #780108

Replaced by #780108

?
Manufacturer substitution
This part replaces 780108. Substitute parts can look different from the original.
This item is not returnable
In Stock
Sprocket 786049
#20

Replacement parts diagram

Sprocket

Part #786049

Replaced by #786049

?
Manufacturer substitution
This part replaces 786049. Substitute parts can look different from the original.
In Stock

Most common symptoms to help you fix your sewing machines

Choose a symptom to see related sewing machine repairs.

Main causes: faulty foot pedal, locked drive gears, wiring failure, bad drive motor...

Main causes: machine needs lubrication, internal gear failure...

Main causes: dirty shuttle race, improper thread routing, incorrect thread tension...

Main causes: dirty shuttle race, wrong thread tension, bad needle timing, damaged needle, using the wrong type of needle...

Main causes: problems with the feed dogs, setting stitch length to 0...

Main causes: disengaged clutch, broken drive belt, internal drive gear failure...

Main causes: lack of lubrication, lint buildup, worn drive belt, faulty drive motor...

Main causes: thread bunched up in the shuttle race, bad needle timing, internal drive gear failures...

Main causes: power supply failure, bad power cord, faulty On/Off switch...

Most common repair guides to help fix your sewing machines

These step-by-step repair guides will help you safely fix what’s broken on your sewing machine.

How to replace a sewing machine on/off switch

How to replace a sewing machine on/off switch

If the sewing machine is completely dead, replace the On/Off switch using these 6 steps....

Repair difficulty
Time required
30 minutes or less
How to replace a sewing machine drive belt

How to replace a sewing machine drive belt

You can replace a broken sewing machine drive belt in about 15 minutes. ...

Repair difficulty
Time required
15 minutes or less
How to replace a sewing machine drive motor

How to replace a sewing machine drive motor

If the drive motor on your sewing machine runs roughly or doesn't run at all, you can replace it in about 30 minutes usi...

Repair difficulty
Time required
15 minutes or less

Effective articles & videos to help repair your sewing machines

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

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

Get answers to frequently asked questions about Sears and Sears PartsDirect....

How to use a multimeter to test electrical parts video

How to use a multimeter to test electrical parts video

Learn how to use a multimeter to check for wiring problems in an appliance that's not working...