Craftsman
Lawn & Garden Engine

Model # 143986250 Official Craftsman engine

Here are the diagrams and repair parts for Official Craftsman 143986250 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.

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 153 parts  |

Lawn & Garden Equipment Engine Air Filter (replaces 490-200-0021, Taf-128, Tc-36905) 36905
#245

Engine 143.986250 diagram

Lawn & garden equipment engine air filter (replaces 490-200-0021, taf-128, tc-36905)

Part #36905

BEST SELLER
$7.36
12% OFF Phone Price : $8.36
In Stock
Lawn Mower O-ring 631028
#29

Carburetor 640069 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
Back Order
Needle Seat 631021
#30

Carburetor 640069 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
$9.50
10% OFF Phone Price : $10.50
Back Order
Troybilt Lawn & Garden Equipment Engine Carburetor Rebuild Kit (replaces 632760a, 632809) 632760B
#(NI)

Carburetor 640069 diagram

Troybilt lawn & garden equipment engine carburetor rebuild kit (replaces 632760a, 632809)

Part #632760B

BEST SELLER
$22.91
21% OFF Phone Price : $28.91
In Stock
Ignition Module 34443B
#100

Engine 143.986250 diagram

Ignition module

Part #34443B

Replaced by #34443D

?
Manufacturer substitution
This part replaces 34443B. Substitute parts can look different from the original.
BEST SELLER
$44.07
12% OFF Phone Price : $50.07
In Stock
Gasket 27110
#44

Carburetor 640069 diagram

Gasket

Part #27110

Replaced by #27110A

?
Manufacturer substitution
This part replaces 27110. 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
Troybilt Lawn & Garden Equipment Engine Air Filter Collar Gasket 34338
#239

Engine 143.986250 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
Cap 36246
#301

Engine 143.986250 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
Gasket 36996
#306

Engine 143.986250 diagram

Gasket

Part #36996

Replaced by #37610

?
Manufacturer substitution
This part replaces 36996. 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
Float 632019
#28

Carburetor 640069 diagram

Float

Part #632019

Replaced by #632019A

?
Manufacturer substitution
This part replaces 632019. Substitute parts can look different from the original.
This item is not returnable
$8.89
10% OFF Phone Price : $9.89
In Stock

Symptoms for elliptical machines

Choose a symptom to see related elliptical repairs.

Main cause: lack of lubrication on pivot points…

Main causes: faulty reed switch, reed switch needs adjustment, wiring failure, bad control console…

Main causes: dirty heart rate sensors, wiring failure, bad control console…

Main causes: dead batteries, power supply failure, bad wiring connections, faulty control console…

Main causes: loose fastening bolts, damaged handle bars…

Main causes: weak batteries, loose wires, faulty control console…

Main causes: leveling feet need to be adjusted, loose frame bolts, unstable flooring…

Main causes: bad resistance motor, faulty control console, wiring failure…

Repair guides for elliptical machines

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

How to replace an elliptical resistance motor

How to replace an elliptical resistance motor

If the resistance motor is not changing the resistance on your elliptical, replace it using these steps.…

Repair difficulty
Time required
 15 minutes or less
How to adjust an elliptical reed switch

How to adjust an elliptical reed switch

If the console doesn't display the correct speed on your elliptical, adjust the reed switch using these steps.…

Repair difficulty
Time required
 15 minutes or less
How to replace an elliptical console

How to replace an elliptical console

If the console on your elliptical doesn't work, replace it by following these 3 easy steps.…

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 elliptical.

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.…

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.…