Craftsman
Engine & Drivetrain

Model # 143900-002A Official Craftsman transaxle

Here are the diagrams and repair parts for Official Craftsman 143900-002A transaxle, 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 62 parts  |

Dowel Pin 786026
#39

Replacement parts diagram

Dowel pin

Part #786026

Replaced by #786026B

?
Manufacturer substitution
This part replaces 786026. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$4.60
18% OFF Phone Price : $5.60
In Stock
Holder 790005
#44

Replacement parts diagram

Holder

Part #790005

Replaced by #790025

?
Manufacturer substitution
This part replaces 790005. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$18.30
10% OFF Phone Price : $20.30
In Stock
Screw 792085
#62

Replacement parts diagram

Screw

Part #792085

Replaced by #792085A

?
Manufacturer substitution
This part replaces 792085. Substitute parts can look different from the original.
This item is not returnable
$4.60
18% OFF Phone Price : $5.60
In Stock
Screw 792073
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
Lawn & Garden Equipment Needle Bearing 780086
#2

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
Spacer 786066
#61

Replacement parts diagram

Spacer

Part #786066

Replaced by #786066

?
Manufacturer substitution
This part replaces 786066. Substitute parts can look different from the original.
This item is not returnable
In Stock
Spring 792079
#22

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
Seal Ring 788061
#23

Replacement parts diagram

Seal ring

Part #788061

Replaced by #788061

?
Manufacturer substitution
This part replaces 788061. Substitute parts can look different from the original.
This item is not returnable
$3.40
23% OFF Phone Price : $4.40
In Stock
Seal 788051
#33

Replacement parts diagram

Seal

Part #788051

Replaced by #788051A

?
Manufacturer substitution
This part replaces 788051. Substitute parts can look different from the original.
This item is not returnable
In Stock
Nut 792075
#43

Replacement parts diagram

Nut

Part #792075

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

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…

Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess…

Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,…

Main causes: water supply needs chlorine treatment, anode rod too reactive…

Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse…

Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating elemen…

Main causes: faulty pressure relief valve, water is overheating…

Repair guides for electric water heaters

How to replace a water heater element

How to replace a water heater element

If your water heater runs out of hot water quickly and one of the two heating elements has failed, replace the element f…

Repair difficulty
Time required
 30 minutes or less
How to replace an electric water heater thermostat

How to replace an electric water heater thermostat

If the water temperature fluctuates or you don't get enough hot water, follow these instructions to replace your water h…

Repair difficulty
Time required
 30 minutes or less
How to replace a water heater temperature and pressure (T&P) relief valve

How to replace a water heater temperature and pressure (T&P) relief valve

Replace a broken temperature/pressure (T&P) relief valve on an electric water heater using these instructions.…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your water heaters

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

Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

Find out what’s wrong with your appliance by following a circuit.…

Easy DIY water heater repairs

Easy DIY water heater repairs

Read about some water heater repairs that you can easily do yourself.…