What brand engine does Craftsman use?
Craftsman uses engines from multiple manufacturers, depending on the specific mower or equipment and production year; common engine brands include Briggs & Stratton, Kohler, Kawasaki, and Tecumseh. For the Craftsman engine model 143004500, parts support aligns with Tecumseh-style engine components.
How to identify the engine brand on your Craftsman equipment
Use the engine’s ID tag, not the mower deck label. On most lawn and garden engines, the tag is on the blower housing, valve cover area, or near the starter.
- Look for an engine model number and spec number stamped on the shroud
- Compare the engine model format (for example, Tecumseh often uses numeric families like 143.xxxxxx)
- Match the engine model to the correct carburetor, ignition, and fuel system parts
- If the tag is missing, use the equipment model number plus the engine’s physical features (air box shape, carb linkage layout)
What the 143004500 model number usually indicates
Craftsman engine model numbers that start with 143 are commonly associated with Tecumseh-built engines. That is why you will see Tecumseh-labeled replacement parts and assemblies listed for this model.
| What you see | What it typically means | Why it matters |
|---|---|---|
| Engine model starts with 143 | Tecumseh-family engine | Helps you choose the right carburetor and ignition parts |
| Primer bulb on carburetor | Primer-style carb setup | Points to primer bulb and carb gasket as common service items |
| No-spark symptoms | Ignition module testing needed | Prevents unnecessary carburetor replacement |
Parts that commonly match this engine family
If you are servicing fuel delivery or ignition on model 143004500, these parts are common starting points:
- Ignition module 34443D (spark/no-spark troubleshooting)
- Craftsman lawn & garden equipment engine carburetor primer bulb (red) 640259 (hard starting, needs priming)
- Craftsman lawn and garden equipment engine carburetor gasket 26756 (vacuum leaks, surging)
- Needle seat 631021B (flooding, fuel leaking into carb)
Why it matters
Engine brand and engine model determine the correct carburetor, governor linkage, ignition coil air gap specs, and gasket shapes. Matching parts to 143004500 prevents repeat failures like hard starting, surging, or fuel leaks.
Last updated: January 2026
What is the part number of the Craftsman 143004500 blade?
The Craftsman 143004500 is a lawn and garden engine model, so it does not use a mower “blade” part. Blades are matched to the mower or tractor deck model number, not the engine model number; use the equipment model to identify the correct blade part number.
How to get the correct blade part number
Use the model number from the mower or tractor (often on the frame, under the seat, or near the deck) and then look up blades by that model.
- Find the equipment model number tag (not the engine tag)
- Note the deck size (commonly 42 in, 46 in, 48 in, etc.)
- Count blades (most decks use 2 or 3)
- Check the center hole style (star, round, “D”, etc.)
- Match the blade length and mounting pattern to the deck
Why the engine model number is not enough
Your engine model (143004500) helps us match engine parts like carburetor components, ignition parts, and fuel line, but it does not identify the cutting deck hardware.
Here are examples of engine-related parts that do match Craftsman 143004500:
| What you are fixing | Example part for this engine model | What it affects |
|---|---|---|
| Hard starting, no spark | Ignition module 34443D | Spark to the plug |
| Fuel leaks, flooding | Needle seat 631021B | Carburetor fuel shutoff |
| Primer won’t pump fuel | Craftsman lawn & garden equipment engine carburetor primer bulb (red) 640259 | Cold starting |
Why it matters
Ordering blades by the engine model often leads to the wrong length or mounting hole pattern, which can cause poor cutting, vibration, or deck damage.
Last updated: January 2026
What model number is the Craftsman 143004500?
The model number is 143004500. On Sears PartsDirect, Craftsman 143004500 identifies a lawn and garden engine (not a tractor model), and you should use 143004500 when looking up engine diagrams and matching parts.
Where to find and confirm the model number
For Craftsman lawn and garden engines, the model number is typically shown on the engine’s ID label or stamping. Check these common locations:
- Blower housing (recoil starter cover)
- Valve cover area
- Engine shroud near the spark plug
- Side of the engine block near the muffler
- A metal tag or sticker on the engine housing
Why this model number matters for parts
Using the correct model number helps ensure you get the right carburetor, ignition, and gasket parts for your exact engine build.
| What you’re doing | Use this number | Why it helps |
|---|---|---|
| Looking up engine diagrams | 143004500 | Matches the correct engine breakdown |
| Ordering engine parts | 143004500 | Filters parts that fit this engine |
| Comparing to a tractor model | Tractor model number (different) | Tractor and engine numbers are not interchangeable |
Common mix-up: tractor model vs. engine model
A tractor (or mower) has its own model number, and the engine mounted on it has a separate model number. If you are repairing the engine itself, 143004500 is the number that matters.
Example parts you might match by engine model
If you are troubleshooting fuel or ignition issues on this engine, these model-matched parts are common starting points:
- Ignition module 34443D for no-spark symptoms
- Carburetor 640278A for flooding, surging, or hard-start issues
- Needle seat 631021B for carburetor leaking or fuel overflow
Why it matters
A single digit off in an engine model number can change the carburetor style, gasket shapes, or ignition system. Confirming 143004500 first prevents wrong-part returns and repeat repairs.
Last updated: January 2026
What model number is the Craftsman 143004500?
The model number is 143004500. On Sears PartsDirect, Craftsman 143004500 identifies a specific lawn and garden engine (not a tractor model), and you should use 143004500 when looking up engine parts like a carburetor, ignition module, or fuel line.
Where to find and confirm the model number
We recommend matching the model number on the engine itself to 143004500 before ordering parts.
- Check the engine shroud/blower housing for a model tag or stamped ID
- Look near the recoil starter area and fuel tank mounting points
- Clean dirt and oil off the tag so all digits are readable
- Write down the full model number exactly as shown (no missing digits)
Why you might see a different number online
Sometimes customers mix up the equipment model (tractor, mower, tiller) with the engine model. For this page, 143004500 is the engine model used to match engine-specific parts.
| Number type | What it identifies | Used for ordering |
|---|---|---|
| Engine model number | The engine itself (Craftsman 143004500) | Carburetor, ignition, gaskets, fuel system parts |
| Equipment model number | The mower/tractor/tiller the engine is mounted on | Belts, blades, deck parts, chassis parts |
Parts that commonly require the engine model number
If you are ordering or troubleshooting these, using 143004500 helps ensure the correct match:
- Carburetor 640278A (fuel metering and starting)
- Ignition module 34443D (spark generation)
- Line 29774 (fuel delivery)
- Craftsman lawn and garden equipment engine carburetor gasket 26756 (sealing the carburetor)
Why it matters
Using the correct model number prevents wrong-part returns and saves time, especially for carburetor and ignition parts where small design differences can stop the engine from starting or running smoothly.
Last updated: January 2026
