Where can I find my lawn mower engine model number?
On a Craftsman lawn and garden engine like model 143016708, the engine model number is typically stamped into the metal on the engine itself (not on a decal). Look on the top area of the cylinder or blower housing; the stamping is often on the right or left side depending on how the engine is mounted.
Where to look first (fast checks)
- Check the top of the cylinder for numbers stamped into the metal.
- Look near the blower housing/recoil starter area.
- Inspect both the right and left sides of the engine (orientation varies by mower).
- Wipe off dirt and oil; stamped numbers can be faint.
- Use a flashlight and take a phone photo, then zoom in to read it.
What the model number looks like
For Craftsman engines in the 143.xxxxxx family, the model is commonly a series of digits stamped into the engine. Record the full string exactly as stamped so we can match the correct carburetor, ignition, and fuel system parts.
| What to record | Example for this page | Why it matters |
|---|---|---|
| Engine model number | 143016708 | Identifies the correct parts diagrams and parts list |
| Any extra codes nearby | Letters or additional digits | Helps match the exact production version |
Why it matters
Using the correct engine model number prevents ordering the wrong tune-up or carburetor parts. For example, fuel and carburetor components like the needle seat 631021B and carburetor primer bulb (red) 640259 can vary by engine version even when the mower looks similar.
Last updated: February 2026
What engine does Craftsman riding mower use?
Craftsman riding mowers use several different engines depending on the mower model, not the engine model. Model 143016708 is a Craftsman lawn and garden engine (commonly a Tecumseh-built engine family), so it is used on certain Craftsman machines rather than describing what engine a specific riding mower uses.
How to identify the engine on your Craftsman riding mower
Use these quick checks to match the mower to the correct engine and parts:
- Find the engine model number stamped on the blower housing, valve cover, or recoil starter area
- Compare that engine number to the parts listing for 143016708
- Check the mower frame tag for the mower model number (often under the seat or on the frame rail)
- Match parts by engine model, not by deck size or horsepower decals
- If the engine runs poorly, confirm fuel and carburetor parts match the engine model before ordering
Common engine brands you may see on Craftsman riders
Craftsman has used multiple engine suppliers over the years. Here is a practical way to think about it:
| What you see on the engine | What it usually means | What to do next |
|---|---|---|
| Tecumseh-style model like 143.XXXXXX | Engine family tied to Craftsman numbering | Use engine model 143016708 parts list |
| Briggs & Stratton label and model/type/code | Briggs engine identification system | Use the Briggs model/type/code for parts |
| Kohler model and spec numbers | Kohler identification system | Use Kohler model and spec for parts |
Parts that often solve “what engine is this?” confusion
If you are servicing engine 143016708, these parts are commonly referenced during tune-ups and carburetor work:
- Carburetor 640350 (complete carburetor assembly)
- Craftsman lawn & garden equipment engine fuel line 29774 (fuel delivery line)
- Craftsman lawn & garden equipment engine carburetor primer bulb (red) 640259 (primer bulb)
- Tecumseh lawn and garden equipment engine carburetor rebuild kit 632760B (gaskets, needle/seat type items)
Why it matters
Ordering by the correct engine identification prevents mismatched carburetor, fuel system, and ignition parts. Even two Craftsman riders with the same deck size can use different engines and different part numbers.
Last updated: February 2026
What model number is a Craftsman 6.75 lawn mower?
A “Craftsman 6.75” is not a single model number; 6.75 usually describes the engine horsepower class, not the mower’s model. To get the correct parts, we match the model number from your mower’s ID tag, then confirm the engine model (often a Craftsman 143.xxxxxx series) if you are shopping engine parts.
Where to find the correct model number
Check these common locations on a Craftsman walk-behind mower:
- Under the rear discharge door or on the rear deck near the bagger opening
- On the left or right side of the mower deck (near the wheels)
- On the handle support bracket or frame rail
- On a sticker near the engine mounting area
- In some cases, on the underside of the deck (tip the mower safely and only after draining fuel)
If you are working with the engine shown on this page, the engine model is 143016708.
Mower model number vs. engine model number (why both matter)
Many Craftsman mowers have two identifiers: the mower model (for chassis parts like wheels and cables) and the engine model (for carburetor and ignition parts).
| What you’re repairing | Number to use | Example format |
|---|---|---|
| Mower deck, wheels, drive, handle controls | Mower model number | 917.XXXXXX or similar |
| Carburetor, fuel system, ignition, internal engine parts | Engine model number | 143.XXXXXX (like 143016708) |
Quick checks to avoid ordering the wrong part
Before ordering parts for a “6.75” mower, we recommend:
- Confirm the full model number exactly as printed (include all digits)
- Confirm whether you need mower parts or engine parts
- Compare your existing part visually (shape, mounting holes, connector style)
- If the engine runs poorly, inspect fuel and carburetor wear items first
Common engine tune-up and fuel-system items for model 143016708 include the Craftsman lawn & garden equipment engine fuel line 29774 and carburetor service parts like the needle seat 631021B.
Why it matters
“6.75” is a broad label used across many Craftsman mowers and engines. Using the exact model number prevents mismatched parts, repeat repairs, and hard-starting issues caused by incorrect carburetor or fuel components.
Last updated: February 2026
