Craftsman 143954502 engine Parts

To look up the correct parts for your Craftsman engine, match the model number exactly as it appears on the engine’s ID tag; for this page, that model is 143954502. Once you have the full model number, you can use it to pull the right diagrams and replacement parts, then order through the parts list or Sears PartsDirect.

On most Craftsman small engines, the model number is stamped or printed on an engine identification label or metal tag. Common locations include:

• On the blower housing (recoil starter shroud)
• Near the spark plug area
• On the valve cover area (side of the engine)
• On the engine block near the muffler
• On a tag near the carburetor or fuel tank

Once you find the model number, use it exactly (including all digits) to ensure the parts list matches your engine’s build.

• Confirm the model number is complete (no missing digits)
• Compare the model number to the one you are shopping for (example: 143954502)
• Use the model to select the correct part category (carburetor, ignition, starter, gaskets)
• Cross-check the part name and part ID before ordering

If your engine is running rough, won’t start, or leaks, these are common model-based lookups for Craftsman engines like 143954502:

Craftsman engines often have multiple versions that look similar but use different carburetor gaskets, ignition parts, or starter components. Using the exact model number helps us get you the right fit the first time and avoids repeat repairs.

Last updated: February 2026

Craftsman riding mowers use different engines depending on the exact mower model and build; the Craftsman 143954502 you are viewing is an engine model (not a mower model), so it does not identify a single “riding mower engine” by itself. To match the correct engine, use the mower’s model number and then cross-reference the engine model tag.

We recommend confirming the engine by reading the ID tag on the engine itself, then matching that to the parts list.

• Look for an engine ID label stamped or printed on the blower housing, valve cover, or near the starter
• Record the engine model and any spec or type numbers
• Compare those numbers to the engine parts listing for Craftsman 143954502
• If your mower runs rough or won’t start, confirm the air and fuel system parts match your engine
• Order common tune-up parts from the parts list for this engine, or search by mower model on Sears PartsDirect

Craftsman riders are commonly equipped with engines from several manufacturers; the exact match depends on the mower model and year.

The correct engine identification prevents wrong-part orders and speeds up troubleshooting. For example, a no-start issue can be caused by a clogged air filter, a leaking carburetor gasket, or ignition problems; those parts must match the exact engine model.

If your mower’s engine tag matches 143954502, these parts are commonly involved in starting and running problems:

• Troybilt lawn & garden equipment engine air filter 35066 (restricted airflow, rich running)
• Craftsman lawn and garden equipment engine carburetor gasket 26756 (air leaks, surging)
• Needle seat 631021B (flooding, fuel overflow)
• Lamination 34443D (spark loss, intermittent ignition)

Last updated: February 2026

On a Craftsman lawn and garden engine, the model number is typically stamped directly into the engine metal (often on or near the cylinder, blower housing, or valve cover area). For your parts lookup, use the exact engine model number shown on the stamp, then match it to model 143954502 when ordering parts from our list or searching on Sears PartsDirect.

Look for a stamped number (not a sticker) in these spots:

• Top of the cylinder head area
• Left or right side of the cylinder (varies by engine orientation)
• Blower housing (recoil starter shroud)
• Valve cover area
• Near the carburetor mounting flange

Engine stamps can be faint or partially covered by dirt or paint. Use this quick process:

• Wipe the area clean with a rag and a mild degreaser
• Use a flashlight at a low angle to make the stamp stand out
• Write down every character in order (letters and numbers)
• Take a clear photo before you leave the mower
• Match the full model number exactly when selecting parts

Small engine families share many similar-looking parts, but key items like the carburetor, ignition coil, and gaskets can change by spec. Using the exact model number helps ensure the correct fit and avoids repeat repairs.

Once you confirm the model number, these are common maintenance and repair items to match carefully:

• Air filter (example: troybilt lawn & garden equipment engine air filter 35066)
• Carburetor and carburetor gasket (example: Craftsman lawn and garden equipment engine carburetor gasket 26756)
• Ignition coil (example: tecumseh lawn & garden equipment engine ignition coil 34443D)
• Primer components (example: Craftsman lawn & garden equipment engine carburetor primer bulb 632047A)

Last updated: February 2026

On a Craftsman engine like model 143954502, the product date code is typically stamped or printed on the engine’s identification label or on the metal shroud near the model and specification numbers. If the label is missing or unreadable, we use the model number to match the correct parts list and diagrams.

Look for a small tag, decal, or stamped area on the engine itself (not the mower deck). Check these spots:

• Blower housing (the metal shroud covering the flywheel)
• Valve cover area
• Near the spark plug side of the engine
• Near the carburetor mounting area
• On the recoil starter housing or nearby shroud
• On the engine block, close to where the shroud bolts on

A date code is often hard to see because of oil film and grass dust. We recommend:

• Let the engine cool completely
• Brush off loose debris first
• Wipe the label area with a rag and mild degreaser
• Use a flashlight at a low angle to highlight stamped numbers
• Take a close-up photo and zoom in to read faint characters

If you can read 143954502 but not a date code, you can still identify the right replacement parts by using the model-based parts list. These are common maintenance and repair items for this engine:

The date code helps confirm the engine’s production run, which can affect small design changes (like carburetor or ignition variations). Even without it, matching parts to model 143954502 keeps repairs accurate and prevents ordering the wrong gasket, air filter, or ignition component.

For ordering, we recommend starting with the parts list for model 143954502 and, if you are searching across multiple models, using Sears PartsDirect.

Last updated: February 2026

The Craftsman engine model 143954502 was produced across multiple runs, so there is no single “made year” tied to that model number. To identify the exact year, use the engine’s serial or date code from the engine tag and match it to the correct configuration.

Check the engine itself (not the mower or tractor frame). Common locations include:

• Blower housing or recoil starter shroud
• Crankcase near the oil fill tube
• Valve cover area
• Near the spark plug
• Near the carburetor mounting area

Record every character exactly as shown; the “spec” and serial or date code are what separate one production run from another.

• Model: 143954502
• Spec/type code (configuration)
• Serial number or date code
• Any prefix or suffix letters

On Craftsman engines, the exact configuration matters more than the calendar year. The same 143954502 model can use different carburetor, ignition, or gasket parts depending on the spec and production run.

When the tag is hard to read, comparing key parts on your engine can help narrow the correct build:

• Carburetor 632795A (linkage and mounting style)
• Lamination 34443D (ignition coil/armature style)
• Craftsman lawn and garden equipment engine carburetor gasket 26756 (mounting pattern)

You can order parts from the list for model 143954502, or search by the full model and spec on Sears PartsDirect.

Last updated: February 2026