Owner’s manual
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What engine does Craftsman riding mower use?
The Craftsman riding mower model 917256810 uses a Briggs & Stratton single-cylinder gasoline engine. The exact engine series and full spec label (model, type, code) are listed on the engine identification tag and in the 917256810 owner's manual.
How to identify the exact engine on your 917256810
We recommend confirming the engine by reading the Briggs & Stratton ID label on the engine shroud or valve cover area.
- Park on a flat surface, set the parking brake, and remove the key
- Let the engine cool completely before reaching near the muffler
- Look for a label stamped or printed with Model / Type / Code
- Write the numbers down exactly; that is the engine identity used for tune-up parts
- Match those numbers to the engine section in the 917256810 owner's manual
Common engine-related specs you will see for this model
The manual for this tractor includes service specs that help confirm you are working on the correct engine setup.
| Spec (from manual) | Value |
|---|---|
| Spark plug | Champion RJ19LM |
| Spark plug gap | 0.030 in |
| Charging system | 3 amps (battery), 5 amps (headlights) |
| Battery minimum | 25 Ah, 190 CCA, case size U1R |
Why it matters
Knowing the exact Briggs & Stratton engine identification (Model/Type/Code) prevents wrong-part returns and helps you choose the correct spark plug, air filter, fuel filter, and tune-up settings for reliable starting and mowing power.
Last updated: January 2026
Do Craftsman mowers use Briggs and Stratton engines?
Yes, many Craftsman mowers and tractors use Briggs & Stratton engines; for Craftsman tractor model 917256810, the documentation lists a Briggs & Stratton engine model 28N707 (type 0173-01). For engine identification, we recommend matching the engine model and type on the engine label to the specs in the 917256810 owner's manual.
How to confirm what engine your Craftsman mower has
Use these quick checks to verify the engine brand and exact engine model on your unit:
- Look for the engine ID label on the blower housing, valve cover, or near the starter
- Match engine model and type number (both matter for parts)
- Compare the numbers to the engine section in the 917256810 owner's manual
- If the label is dirty, wipe it and use a flashlight to read stamped characters
- If the tractor has been repowered, trust the engine label over the tractor model tag
What the manual shows for model 917256810
The manual’s repair parts section for this tractor identifies the engine as Briggs & Stratton and lists the engine model and type.
| Item | What to look for | Why it matters |
|---|---|---|
| Tractor model | 917256810 | Ensures you are using the correct tractor diagrams and adjustments |
| Engine brand | Briggs & Stratton | Guides you to the right engine parts family |
| Engine model | 28N707 | Narrows down the correct carburetor, ignition, and gasket parts |
| Engine type | 0173-01 | Prevents ordering the wrong variation of the same engine model |
Why it matters
Craftsman used engines from multiple manufacturers across different mower lines and years. Even within Briggs & Stratton, the type number can change key parts like the starter, carburetor kit, spark plug, and gasket set, so confirming the exact engine ID saves time and prevents returns.
Last updated: January 2026
How much does it cost to replace a riding lawn mower engine?
Replacing the engine on a Craftsman riding tractor like model 917256810 typically costs $800 to $3,000+ total (engine plus labor), depending on the exact engine model, whether you choose new or rebuilt, and local shop rates. Engine replacement is a major repair, so we recommend confirming your engine model number first in the 917256810 owner's manual.
What drives the total cost
- Engine choice: new OEM-style replacement vs rebuilt vs used
- Labor time: engine swaps commonly run 4 to 8 hours on riding tractors
- Extra parts: belts, pulleys, wiring repairs, fuel line, clamps, battery, blades
- Shop rate: varies widely by region and season
- Deck and drive condition: worn deck/drive components can add time and parts
Typical cost breakdown (what most customers see)
| Cost item | Typical range | Notes |
|---|---|---|
| Engine (new) | $600 to $2,000+ | Varies by horsepower, crankshaft specs, and availability |
| Labor | $300 to $1,200 | Often 4 to 8 hours at local shop rates |
| Misc. parts/fluids | $25 to $200 | Oil, filter, fuel filter, hardware, belts as needed |
Before you buy an engine (quick checks)
Use these steps to avoid ordering the wrong replacement:
- Locate the engine model number on the engine blower housing (the tractor model plate is under the seat).
- Match crankshaft diameter, length, and keyway/thread to your current engine.
- Verify your deck and drive system are worth investing in (spindles, belts, pulleys).
- If your tractor is not moving or the blades will not engage, price those repairs first; a belt issue can look like a bigger problem.
If you are also chasing a no-start or weak-crank symptom, our jump starting a riding lawn mower battery video can help you rule out battery and connection issues before committing to an engine.
Why it matters
An engine replacement can cost as much as a significant portion of a replacement tractor. Confirming the engine model and the rest of the tractor’s condition helps you spend money once and get reliable mowing performance.
Last updated: January 2026
