Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Craftsman
Lawn & Garden Engine

Model # 143963808 Official Craftsman engine

Here are the diagrams and repair parts for Official Craftsman 143963808 engine, 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.

Error Codes

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 122 parts  |
Troybilt Lawn & Garden Equipment Engine Air Filter 35066
#245

Engine 143.963808 (71/143) diagram

Troybilt lawn & garden equipment engine air filter

Part #35066

BEST SELLER
This item is not returnable
$4.79 | 
17% OFF Phone Price : $5.79
In Stock
Lawn Mower O-ring 631028
#29

Carburetor diagram

Lawn mower o-ring

Part #631028

Replaced by #631028A

?
Manufacturer substitution
This part replaces 631028. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Needle Seat 631021
#30

Carburetor diagram

Needle seat

Part #631021

Replaced by #631021B

?
Manufacturer substitution
This part replaces 631021. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$9.79 | 
9% OFF Phone Price : $10.79
In Stock
Starter 590694
#390

Engine 143.963808 (71/143) diagram

Starter

Part #590694

Replaced by #590785

?
Manufacturer substitution
This part replaces 590694. Substitute parts can look different from the original.
BEST SELLER
$29.58 | 
17% OFF Phone Price : $35.58
In Stock
Lamination 34443A
#100

Engine 143.963808 (71/143) diagram

Lamination

Part #34443A

Replaced by #34443D

?
Manufacturer substitution
This part replaces 34443A. Substitute parts can look different from the original.
BEST SELLER
$45.43 | 
12% OFF Phone Price : $51.43
In Stock
Line 34357
#290

Engine 143.963808 (71/143) diagram

Line

Part #34357

Replaced by #29774

?
Manufacturer substitution
This part replaces 34357. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.99 | 
14% OFF Phone Price : $6.99
In Stock
Cap 36246
#301

Engine 143.963808 (71/143) diagram

Cap

Part #36246

Replaced by #37844

?
Manufacturer substitution
This part replaces 36246. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$6.69 | 
13% OFF Phone Price : $7.69
In Stock
Troybilt Lawn & Garden Equipment Engine Air Filter Collar Gasket 34338
#239

Engine 143.963808 (71/143) diagram

Troybilt lawn & garden equipment engine air filter collar gasket

Part #34338

BEST SELLER
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Float 632019
#28

Carburetor diagram

Float

Part #632019

Replaced by #632019A

?
Manufacturer substitution
This part replaces 632019. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$8.89 | 
10% OFF Phone Price : $9.89
In Stock
Troybilt Lawn & Garden Equipment Engine Oil Seal 27897
#75

Engine 143.963808 (71/143) diagram

Troybilt lawn & garden equipment engine oil seal

Part #27897

This item is not returnable
$7.02 | 
12% OFF Phone Price : $8.02
In Stock

RECOMMENDED MAINTENANCE PARTS AND ACCESSORIES

Symptoms for water softeners

Choose a symptom to see related water softener repairs.

View all

Why does my water softener overflow?

Main causes: faulty brine valve assembly, bad rotor valve…

Read more

Why is my softened water salty?

Main causes: clogged drain hose, faulty rotor valve, leaky rotor valve seals…

Read more

Why isn't my water softener using salt?

Main causes: salt bridge inside the salt tank, bad timer, valve motor failure, faulty rotor valve, clogged venturi…

Read more

Why does my water softener leak water?

Main causes: loose water line connections, cracked water-carrying components, bad rotor valve seals…

Read more

Why is there no display on my water softener?

Main causes: lack of electrical power, bad power transformer, faulty timer…

Read more

Why isn't my water softener softening my water?

Main causes: empty salt tank, salt bridge, depleted resin, clogged or damaged venturi, broken rotor position switch, fai…

Read more

Why are water softener resin beads in my water?

Main causes: broken resin tank screen, bad resin tank seals, cracked upper distributor in resin tank…

Read more

Why isn't my water softener meter working?

Main causes: broken water flow meter, faulty timer, water flow to softener is bypassed…

Read more

Repair guides for water softeners

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

View all
How to replace a water softener venturi

How to replace a water softener venturi

The venturi valve in your water softener draws brine water from the salt tank to the resin tank for regeneration. Follow…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a water softener rotor position switch

How to replace a water softener rotor position switch

The rotor position switch detects the position of the valve rotor. If the rotor position switch fails, follow these step…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace a water softener timer

How to replace a water softener timer

The timer is the control board you use to program the water softener. If the timer isn’t accepting commands when you pus…

Read more
Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your lawn & garden engines

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

View all
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.…

Read more
What are the main components of a lawn mower?

What are the main components of a lawn mower?

Learn about the main parts of a lawn mower and when to replace parts.…

Read more

Parts & More