Owner’s manual
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What years did they make the Craftsman 917275401?
Craftsman model 917275401 was produced during the LT1000-era of Craftsman riding lawn tractors; most tractors in this family were sold from the early 1990s into the mid-2000s. For the exact build date of your unit, match the model and serial information on the tractor to the date guidance in the 917275401 owner's manual.
How to identify the exact year for your tractor
Use the tractor’s ID information to pin down the manufacturing date (or at least the production window).
- Locate the model/serial number label (commonly under the seat or on the frame near the seat pan).
- Confirm the model reads 917275401 (not a close variant).
- Write down the serial number exactly as shown.
- Compare the serial/date information to the identification section in the 917275401 owner's manual.
- If decals are missing or unreadable, use the parts diagrams in the manual to confirm major assemblies match your tractor.
Quick checks that help confirm you have the right model
These model-specific manual diagrams are a good “fingerprint” for 917275401:
| What to check | Where it shows up | Why it helps |
|---|---|---|
| Chassis and enclosures breakdown | Hood, dash, footrests, drawbar | Confirms body style and frame layout |
| Ground drive breakdown | Transmission and belt routing | Confirms drive system family |
| Steering assembly breakdown | Axle, drag link, steering shaft | Confirms steering geometry and parts family |
Why it matters
The production year affects which engine parts, deck components, and drive system parts fit correctly. Even within the same Craftsman LT1000 family, small changes across years can change belts, pulleys, and steering parts.
Related maintenance tip
If you are also trying to date the tractor because it is hard to start after storage, follow the seasonal storage steps in the 917275401 owner's manual and consider a basic tune-up routine.
Last updated: January 2026
How much does it cost to replace a riding lawn mower engine?
For a Craftsman riding lawn tractor like model 917275401, a full engine replacement typically costs $800 to $2,500+ installed (engine plus labor). The biggest cost drivers are engine type, whether the replacement is a direct bolt-on, and shop labor time.
What you’re paying for
Engine replacement is usually priced as parts plus labor, and sometimes extra items that are smart to replace at the same time.
- Replacement engine (most of the total cost)
- Labor time (commonly 4 to 8 hours for a riding tractor)
- Fluids and tune-up items (oil, filter, spark plug)
- Belts or pulleys if worn or damaged
- Pickup/delivery if the tractor is transported to a shop
Typical cost ranges (installed)
| Scenario | What it usually includes | Typical total cost |
|---|---|---|
| Budget repair | Used or basic replacement engine, minimal extras | $800 to $1,400 |
| Most common | New engine, standard labor, fresh oil and basic checks | $1,200 to $2,200 |
| Higher-end or complex | New engine plus additional worn parts, more labor | $2,000 to $2,500+ |
Before you replace the engine: quick checks that often save money
Many “needs an engine” symptoms are caused by starting, fuel, or safety interlock issues. Our troubleshooting guidance for this tractor includes checks like battery condition, wiring, ignition switch, solenoid/starter, fuel quality, and air filter condition. See the 917275401 owner's manual for the troubleshooting chart and service checks.
- Verify the battery is charged and terminals are clean
- Inspect wiring connections for looseness or corrosion
- Check the fuel is fresh and the fuel filter is not restricted
- Confirm the spark plug wire is tight and the plug is serviceable
- Make sure the air filter is clean
Why it matters
An engine swap is one of the highest-cost repairs on a riding mower. Confirming the real failure first helps you avoid replacing a good engine when the issue is a battery, solenoid, fuel problem, or safety circuit.
Last updated: January 2026
What engine does Craftsman riding mower use?
The Craftsman lawn tractor model 917275401 uses a Briggs & Stratton gasoline engine. Our model-specific documentation also identifies this tractor as an 18.0 HP, 42-inch mower with electric start and an automatic transmission; see the 917275401 owner's manual for the engine identification label location and maintenance specs.
Engine details for model 917275401
Here is what matters most when you are servicing or shopping for tune-up parts:
- Engine manufacturer: Briggs & Stratton
- Fuel type: Gasoline
- Starting system: Electric start
- Emissions: Low-emission engine design (operates differently than older engines)
- Mower deck size: 42-inch
How to confirm the exact engine model on your tractor
Even when the engine brand is known, the engine model/type/code is what you use to match the correct spark plug, air filter, and carburetor settings.
- Locate the engine ID label on the engine shroud or valve cover area
- Write down the model, type, and code exactly
- Use that ID to match tune-up parts and service specs
- Keep the ID with your tractor records for future parts lookups
Quick spec snapshot
| Spec | Model 917275401 |
|---|---|
| Engine brand | Briggs & Stratton |
| Power rating | 18.0 HP |
| Deck size | 42 in |
| Start/drive | Electric start, automatic transmission |
Why it matters
The Briggs & Stratton engine ID (model/type/code) prevents wrong-part returns and helps your tractor start easier, run smoother, and cut consistently after routine maintenance.
Last updated: January 2026
What model number is a Craftsman 6.75 lawn mower?
“6.75” is an engine power class, not a Craftsman model number. The model number is printed on the mower’s ID label; one common 6.75 Craftsman walk-behind example is model 917377911. If you are working on the Craftsman riding tractor covered here, the model is 917275401 (shown in the 917275401 owner's manual).
How to find the model number on a Craftsman mower
Check the product ID label and write down the full model number (usually starts with 917). Common locations:
- Rear of the mower deck near the discharge chute
- On the frame rail near the engine
- Near the rear wheels or height-adjuster area
- Under the seat (riding mowers and tractors)
- On the handle support bracket (some walk-behind mowers)
“6.75” vs model number vs engine numbers
Use the mower model number for chassis and deck parts; use the engine model and type for engine parts.
| Label you see | What it identifies | Use it to get the right parts |
|---|---|---|
| 6.75 | Engine power class | Not enough by itself |
| 917377911 (example) | Walk-behind mower model | Blade, wheels, drive parts, deck parts |
| 917275401 | Riding tractor model | Tractor and 42-inch deck parts |
| Engine model/type/code | Engine identification | Carburetor, starter, ignition, gaskets |
Why it matters
Ordering by the exact model number prevents mismatches in deck size, blade style, belt routing, and hardware.
Example part for the 917275401 tractor
If you are servicing the 42-inch deck on model 917275401, a commonly used blade option is the lawn tractor 42-in deck high-lift blade 532138971 (match your deck setup before ordering).
Last updated: January 2026
