Craftsman 143049001 engine Parts

Craftsman engines are made by multiple manufacturers, depending on the specific product and model year. For Craftsman lawn and garden equipment, the most common engine suppliers are Briggs & Stratton, Kohler, and Kawasaki; the exact maker for your Craftsman 143049001 engine is best confirmed by matching the engine’s model and spec numbers to the correct parts list.

How to identify who made your Craftsman 143049001 engine

Look for an engine ID tag or stamping on the blower housing, valve cover area, or near the starter. Then compare what you find to the parts you see listed for this model.

• Find the engine model number and any spec/type code
• Note the full number exactly as stamped (including dashes)
• Check for a carburetor style, ignition layout, and starter type that match your parts diagram
• Use the parts list to confirm compatible fuel, ignition, and governor components
• If the tag is missing, match by key parts already on the engine

Parts that often help confirm the engine family

When the engine maker is unclear, we use “signature” parts to narrow it down, especially carburetor and ignition components.

Component area	What it tells us	Example part for this model
Carburetor/fuel system	Commonly unique to an engine family	Needle seat 631021B
Ignition	Module style and mounting pattern vary by maker	Ignition module (varies by build)
Linkage/governor	Link shapes and hole positions are often model-specific	Governor linkage (varies by build)

Why it matters

The manufacturer affects tune-up parts, carburetor settings, ignition air gap specs, and even starter compatibility. Confirming the maker before ordering helps prevent wrong-part returns and speeds up repairs.

Last updated: February 2026

A typical lawn mower engine (including Craftsman model 143049001) is built around fuel delivery, air intake, ignition, and rotating internal parts that create power. The exact layout varies by engine family, but the core components and what they do stay consistent across most small 4-cycle engines.

Main engine systems (what you will usually find)

• Fuel system: fuel tank, fuel cap, fuel line, carburetor, bowl and jets
• Air intake: air filter, intake manifold
• Ignition: flywheel magnets, ignition module, spark plug
• Starting system: recoil starter (pull start) or electric starter
• Exhaust: muffler
• Governor and throttle: linkages and brackets that control engine speed
• Internal engine: crankcase, crankshaft, connecting rod, piston and rings, valves

Common parts you may replace on model 143049001

These are frequent service items that affect starting, power, and smooth running:

• Craftsman lawn & garden equipment engine air filter 28424
• Lawn & garden equipment engine fuel tank cap 37845
• Carburetor 640349
• Needle seat 631021B
• Lawn & garden equipment engine muffler 35056

Quick “what it does” reference

Part or system	What it does	Common symptom when it fails
Air filter	Keeps dirt out of the engine	Runs rich, lacks power, black smoke
Carburetor	Mixes fuel and air	Hard starting, surging, won’t idle
Ignition module	Triggers spark timing	No spark, no start
Muffler	Reduces noise, routes exhaust	Loud operation, poor running
Governor/throttle linkage	Controls RPM under load	Hunting/surging, overspeeding

Why it matters

Knowing which system a part belongs to helps you troubleshoot faster. For example, a “starts then dies” complaint usually points to fuel delivery (carburetor, needle seat, tank venting) rather than internal engine damage.

Last updated: February 2026

A “Craftsman 6.75” lawn mower does not have one universal model number; the correct model number is on the mower’s ID label, and it is what we use to match the exact parts list. For example, one common Craftsman 6.75-hp mower model is 917377911.

Where to find the model number on a Craftsman mower

Check the product ID label on the mower; it is usually on the deck housing or near the rear wheel area.

• Look for a sticker or metal tag with MODEL and SERIAL
• Wipe dirt and grass off the deck before reading the label
• Write the model number exactly as shown (all digits matter)
• Use the model number to confirm the correct engine and mower parts diagrams
• If the label is missing, check purchase paperwork or the original carton

Why “6.75” is not enough by itself

“6.75” typically refers to an engine power class used across many Craftsman walk-behind mowers, so multiple mower models can share that marking but use different blades, belts, carburetor parts, and controls.

Quick comparison

What you have	What it tells us	What it does not tell us
“6.75” marking	General engine power class	Exact mower model and parts
Model number (example: 917377911)	Exact parts match	Nothing; it is the key identifier
Engine model (example: 143049001)	Engine parts match	Deck and drive parts for the mower

If your engine model is 143049001

If your mower uses a Craftsman engine model 143049001, we can match engine-specific parts (carburetor and fuel system items are common). For example, a worn needle seat can cause flooding or hard starting; the correct replacement is the needle seat 631021B.

Why it matters

Using the exact mower model number prevents ordering the wrong blade, air filter, throttle linkage, or carburetor parts, and it speeds up troubleshooting when the mower will not start, surges, or runs rough.

Last updated: February 2026

For Craftsman model 143049001 lawn and garden engine parts, we recommend shopping by your exact model number so you get the right fit; you can buy genuine and compatible replacement parts through Sears PartsDirect and other authorized retailers, and then match the part ID to your engine’s parts diagram.

Best ways to buy the correct Craftsman part

• Start with the full model number: 143049001 (use it in every search)
• Match the part by part ID (most reliable), not just by description
• Compare the old part to the listing (shape, mounting holes, linkage points)
• Replace wear items together when it makes sense (gaskets, O-rings, fuel system seals)
• Avoid “close enough” substitutions on carburetor and ignition parts

Common replacement parts for this engine

If you are servicing fuel delivery or a no-start condition, these are frequently replaced items for model 143049001:

• Needle seat 631021B
• Craftsman lawn & garden equipment engine air filter 28424
• Lawn & garden equipment engine fuel tank cap 37845
• Craftsman lawn & garden equipment engine carburetor o-ring 632547
• Craftsman lawn & garden equipment engine governor linkage 34667

Quick “where to buy” comparison

Option	Best for	What to verify before ordering
Sears PartsDirect	Model-specific diagrams and exact part IDs	Model 143049001, part ID, and part name
Authorized Craftsman retailers	Common maintenance items	Return policy and part number match
Local small-engine shop	Hands-on identification and install help	Bring the old part and model number

Why it matters

Craftsman engines can share similar-looking parts across different builds, and small differences in carburetor, governor, or ignition components can cause hard starting, surging, or poor performance. Ordering by model 143049001 and matching the part ID prevents repeat repairs.

Last updated: February 2026