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Who makes Craftsman engines?
Craftsman-branded engines are made by multiple manufacturers depending on the specific mower or tractor; for many gasoline-powered Craftsman outdoor power products, the engine is commonly supplied by Briggs & Stratton, Kohler, or Kawasaki. For your Craftsman riding lawn tractor model 91725470, the sure way to identify the engine maker is to match the engine’s model and type numbers on the engine tag.
How to identify the engine manufacturer on a Craftsman tractor
Look for an engine identification label (usually on the blower housing, valve cover area, or near the starter). Then use these quick checks:
- Briggs & Stratton: label often shows “Briggs & Stratton” plus a Model-Type-Code format
- Kohler: label often shows “Kohler” plus a Command/Courage style model family and spec number
- Kawasaki: label often shows “Kawasaki” plus an FH/FR/FS style engine family and model
- Record the engine model, type/spec, and code/serial numbers
- Use those numbers when selecting tune-up and repair parts so you get the correct match
Why the manufacturer can vary (even within Craftsman)
Craftsman is a brand used across many outdoor power products and production years. The same Craftsman tractor platform can be sold with different engines based on availability, horsepower package, and build year.
What changes when the engine maker changes
| Item | What can differ | What usually stays similar |
|---|---|---|
| Tune-up parts | Air filter, spark plug, fuel filter | Basic service intervals |
| Starting/charging | Starter, regulator, wiring connectors | Battery voltage (typically 12V) |
| Fuel system | Carburetor/linkages, choke setup | Fuel tank and lines routing |
Parts tip for model 91725470
When you are ordering chassis and drive parts for the tractor itself (not engine-internal parts), use the parts list for model 91725470 first. Common wear items on tractors include steering and drive hardware such as the wizard lawn tractor axle flange bearing 532009040 and belt-drive components like the flat idler 583772001. For broader parts searching by model number, use Sears PartsDirect.
Why it matters
Ordering by “Craftsman engine” alone often leads to the wrong part. Matching the engine tag numbers prevents misfits and helps ensure correct maintenance parts, proper belt routing adjustments, and reliable starting.
Last updated: February 2026
What model number is a Craftsman 6.75 lawn mower?
Craftsman “6.75” is an engine power label used on many different walk-behind mowers, so it is not a single model number. The model number is found on the mower’s product ID tag (not on the engine cover) and is typically a 9-digit Craftsman number that often starts with 917.
Where to find the model number on a Craftsman mower
Look for a sticker or metal tag on the mower, then copy the full model number exactly.
- Rear of the mower deck near the discharge chute
- Under the seat area (for some self-propelled designs with a rear cover)
- On the back panel between the rear wheels
- Near the handle mount brackets on the deck
- Sometimes on the frame rail above the deck
What the model number usually looks like
Most Craftsman walk-behind mower model numbers are formatted like a 9-digit number (often beginning with 917), followed by a dash and additional digits on some tags.
| What you see | What it means | What to do |
|---|---|---|
| “6.75” on the engine shroud | Engine power family label | Keep looking for the product ID tag |
| “917.XXXXXX” or “917XXXXXX” | Craftsman mower model number | Use this to match parts |
| Engine model/type/code | Engine identification | Use for engine-specific parts only |
Why it matters for parts lookup
We match parts by the mower’s exact model number because deck size, drive system, and hardware can vary even when the engine label says 6.75. Using the correct model number helps you get the right drive belt, blade, wheels, and fasteners the first time.
If you are trying to order parts
This page is for a Craftsman 91725470 front-engine lawn tractor (riding mower), not a 6.75 walk-behind mower. Once you locate your walk-behind mower’s model number, search it on Sears PartsDirect to pull up the correct parts diagrams and list.
Last updated: February 2026
What engine is in a Craftsman 91725470?
The Craftsman 91725470 riding lawn tractor (10XL) uses a Briggs and Stratton Intek OHV V-twin (twin-cylinder) engine configuration. For the most accurate match when buying engine-related parts, we use your full model number and the tractor’s engine model and type numbers together; you can also search by model on Sears PartsDirect.
How to identify the exact engine on your tractor
Even within the same tractor model, engine variants can exist. We confirm the exact engine by checking the engine ID tag.
- Look for the engine label on the blower housing, valve cover, or near the starter
- Write down the engine model, type, and code numbers
- Match those numbers when selecting ignition, fuel, and charging parts
- If the label is dirty, wipe it clean and use a flashlight to read stamped characters
Common symptoms that point to engine-related parts
If you are troubleshooting a no-start or rough-running condition, these checks help narrow it down before ordering parts.
- No crank: battery cables, ground connection, safety switches
- Cranks but won’t start: fuel delivery, spark, choke operation
- Runs rough: stale fuel, clogged fuel path, dirty air intake
- Dies under load: fuel restriction, ignition breakdown, governor linkage issues
Parts on this model page that can support engine starting and electrical health
These parts are listed for Craftsman 91725470 and often come up during “no crank” or intermittent electrical complaints.
| Part | What it helps with | When to consider it |
|---|---|---|
| Ground strap 532004207 | Battery-to-frame grounding | Clicking, intermittent crank, hot-start issues |
| Gripco nut 596322601 | Securing hardware on linkages/cables | Loose connections, missing fasteners |
| Washer 532121749 | Spacing and clamping force | Slop in mounts, hardware stack-up issues |
Why it matters
The engine family (Briggs and Stratton Intek OHV V-twin) tells you the general design, but the engine model/type/code determines the exact carburetion, ignition, and charging components that fit correctly.
Last updated: February 2026
What kind of oil do you use in a Craftsman lawn tractor?
For the Craftsman 91725470 front-engine lawn tractor, we use 4-cycle engine oil; in most mowing conditions, SAE 5W-30 is the right all-around choice because it flows well at startup and protects the engine as it heats up.
Recommended oil type and viscosity
Most Craftsman riding lawn tractor engines are 4-stroke (4-cycle) and use standard small-engine oil.
- Use 4-cycle engine oil (not 2-cycle oil)
- SAE 5W-30 is the most common recommendation for broad temperature ranges
- If you mow only in hot weather, SAE 10W-30 is also commonly used
- Avoid automotive “energy conserving” oils if your engine manual specifies small-engine oil
- Always check and maintain the oil level on the dipstick before each use
Quick oil selection guide
| Outdoor temperature | Typical oil choice | Why it works |
|---|---|---|
| Cold to mild (spring/fall) | SAE 5W-30 | Easier starting, fast lubrication |
| Mild to hot (summer) | SAE 10W-30 | Good protection at higher temps |
| Wide range, mixed seasons | SAE 5W-30 | Best all-around option |
Why it matters
Using the correct viscosity helps your 91725470 engine build oil pressure quickly at startup and maintain a protective film when the engine is under load (mowing, hills, towing). The wrong oil can increase wear, smoking, or hard starting.
Helpful maintenance tips while you are checking oil
- Park on level ground and let the engine cool a few minutes
- Wipe the dipstick clean, reinsert fully, then recheck for an accurate reading
- Change oil on schedule; most riding mowers need more frequent changes in dusty mowing conditions
- Inspect for leaks around the engine and frame; a loose fastener can contribute to seepage
- If you are doing a tune-up, order replacement parts for your model from the parts list for 91725470, or search by model on Sears PartsDirect
Parts that can relate to service work
If you are already doing maintenance and notice looseness or wear in the chassis or controls, these model-matched parts are commonly involved in repairs:
- Ground strap 532004207 (helps maintain a solid electrical ground)
- Foot pedal 510089501 (control linkage wear can affect drive feel)
Last updated: February 2026
