Get free shipping on your order, with any water filter subscription. Find my filter

Open Hamburger Menu
Sears Parts Direct
Tips to find your model number
Craftsman 143964012 engine

Craftsman 143964012 engine Parts

Here are the diagrams and repair parts for Craftsman 143964012 engine, as well as links to manuals and error code tables, if available.

By Schematic
By Part
SELECT DIAGRAM
?

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

Browse Parts for 143964012 Engine

  • Craftsman Lawn & Garden Equipment Engine Carburetor Needle Valve Kit for Craftsman 143964012 - Part 631021B

    Carburetor 640026 (71/143) diagram

    Needle Seat

    Part #631021

    Replaced by #631021B

    Info Icon
    Manufacturer substitution
    This part replaces 631021. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $11.38
    15% OFF Phone Price : $13.38Info Icon
    Minus Item
    Qty
    Plus Item
  • Lawn & Garden Equipment Engine Piston And Ring Kit for Craftsman 143964012 - Part 63178

    4-cycle engine 71/143 143.964012 diagram

    Lawn & Garden Equipment Engine Piston And Ring Kit

    Part #40004

    Replaced by #63178

    Info Icon
    Manufacturer substitution
    This part replaces 40004. Substitute parts can look different from the original.
    In Stock
    $67.02
    Minus Item
    Qty
    Plus Item
  • Lawn & Garden Equipment Engine Piston And Ring Kit for Craftsman 143964012 - Part 63178

    4-cycle engine 71/143 143.964012 diagram

    Piston Pin

    Part #36070

    Replaced by #63178

    Info Icon
    Manufacturer substitution
    This part replaces 36070. Substitute parts can look different from the original.
    In Stock
    $67.02
    Minus Item
    Qty
    Plus Item
  • Lawn & Garden Equipment Engine Ground Wire for Craftsman 143964012 - Part 37047

    4-cycle engine 71/143 143.964012 diagram

    Ground Wire

    Part #34961

    Replaced by #37047

    Info Icon
    Manufacturer substitution
    This part replaces 34961. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $2.16
    Minus Item
    Qty
    Plus Item
  • Lawn & Garden Equipment Engine Intake Manifold for Craftsman 143964012 - Part 37466

    4-cycle engine 71/143 143.964012 diagram

    Intake Pipe

    Part #36785

    Replaced by #37466

    Info Icon
    Manufacturer substitution
    This part replaces 36785. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $20.23
    Minus Item
    Qty
    Plus Item
  • Tecumseh Muffler for Craftsman 143964012 - Part 36838A

    4-cycle engine 71/143 143.964012 diagram

    Muffler Kit

    Part #36838

    Replaced by #36838A

    Info Icon
    Manufacturer substitution
    This part replaces 36838. Substitute parts can look different from the original.
    In Stock
    $33.38
    Minus Item
    Qty
    Plus Item
  • Lawn & Garden Equipment Engine Connecting Rod for Craftsman 143964012 - Part 36777A

    4-cycle engine 71/143 143.964012 diagram

    Connecting Rod

    Part #36777

    Replaced by #36777A

    Info Icon
    Manufacturer substitution
    This part replaces 36777. Substitute parts can look different from the original.
    In Stock
    $40.96
    13% OFF Phone Price : $46.96Info Icon
    Minus Item
    Qty
    Plus Item
  • Lawn & Garden Equipment Engine Camshaft for Craftsman 143964012 - Part 37460

    4-cycle engine 71/143 143.964012 diagram

    Camshaft

    Part #36778

    Replaced by #37460

    Info Icon
    Manufacturer substitution
    This part replaces 36778. Substitute parts can look different from the original.
    In Stock
    $83.38
    7% OFF Phone Price : $89.38Info Icon
    Minus Item
    Qty
    Plus Item
  • Lawn & Garden Equipment Screw for Craftsman 143964012 - Part 651025

    Carburetor 640026 (71/143) diagram

    Screw

    Part #650417

    Replaced by #651025

    Info Icon
    Manufacturer substitution
    This part replaces 650417. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $2.16
    Minus Item
    Qty
    Plus Item
  • Craftsman Lawn & Garden Equipment Engine Link for Craftsman 143964012 - Part 34336A

    4-cycle engine 71/143 143.964012 diagram

    Governor Link

    Part #34336

    Replaced by #34336A

    Info Icon
    Manufacturer substitution
    This part replaces 34336. Substitute parts can look different from the original.
    This item is not returnable
    In Stock
    $2.82
    26% OFF Phone Price : $3.82Info Icon
    Minus Item
    Qty
    Plus Item

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to replace a lawn mower front deck tray

How to replace a lawn mower front deck tray

Learn how to replace the front deck tray on your lawn mower if it's cracked or damaged.…

Repair time and Difficulty

 60 minutes or less
How to replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

Repair time and Difficulty

 60 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

Repair time and Difficulty

 45 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 walk-behind lawn mower.

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.…

Parts & More

Central Air Conditioner
Electric Range
Electric Wall Oven
Gas Walk-Behind Mower
Parts
Range
Refrigerator
Side-By-Side Refrigerator
Upright Freezer