How much does it cost to replace a riding lawn mower engine?
Replacing the engine on a Craftsman riding lawn tractor like model 917270911 typically costs $260 to $1,800 installed, depending on the engine type, whether you reuse pulleys and wiring, and local labor rates. Most riding mower engine swaps take about 6 labor hours.
What drives the total cost
- Engine price (new vs. rebuilt, horsepower, shaft size and length)
- Labor time (shop rate and how much teardown is required)
- Extra parts often replaced during the swap (belts, pulleys, hardware)
- Fuel system cleanup if old fuel or debris contributed to the failure
- Electrical and safety interlock checks after installation
Typical cost breakdown
| Cost item | Typical range | Notes |
|---|---|---|
| Engine (part only) | $200 to $1,400 | Varies by brand, output, and crankshaft specs |
| Labor | $200 to $600 | Often around 6 hours for a riding mower |
| Misc. parts and supplies | $20 to $150 | Belts, fasteners, fuel line, oil, filter |
Smart checks before you buy an engine
We recommend confirming the problem is truly a failed engine and not a starting or safety issue. The 917270911 uses an operator presence and interlock system; if it is not working correctly, the tractor may not start or may shut off unexpectedly.
- Verify the clutch/brake pedal is fully depressed
- Make sure the attachment clutch is disengaged
- Inspect battery cables and connections for corrosion or looseness
- Check for stale fuel, a dirty fuel filter, or a faulty spark plug
- Confirm the seat switch and parking brake shutoff behavior matches the manual
For the exact safety interlock behavior and service cautions for this model, use the 917270911 owner's manual.
Why it matters
An engine replacement is one of the highest-cost repairs on a riding mower. A quick diagnosis first can prevent spending hundreds on an engine when the real issue is a battery, wiring, fuel delivery, or an interlock switch.
Last updated: January 2026
What engine does Craftsman riding mower use?
For Craftsman lawn tractor model 917270911, the owner’s manual identifies it as a 19.5 HP electric-start tractor with a 42-inch mower deck and a 6-speed transaxle. For engine brand and model details, use the engine identification section in the 917270911 owner's manual.
How to identify the exact engine on your 917270911
We recommend confirming the engine by reading the engine data label (not the tractor frame tag). On most Craftsman front-engine tractors, the label is on the engine shroud or near the valve cover.
- Turn the engine off and let it cool completely
- Lift the hood and locate the engine data label
- Write down the engine model, type, and code (or spec number)
- Match those numbers when ordering tune-up parts (spark plug, air filter, fuel filter)
- If the label is missing, use the tractor’s parts diagrams and decals list in the manual to narrow down the engine family
What the manual confirms (and what it helps you match)
The manual gives you tractor-level specs that help ensure you are looking at the right platform when identifying the engine.
| Spec item | What to look for on 917270911 |
|---|---|
| Horsepower rating | 19.5 HP |
| Starting system | Electric start |
| Deck size | 42-inch |
| Transmission | 6-speed transaxle |
Why it matters
The engine make and model determine the correct maintenance parts and settings (spark plug type, oil viscosity, valve clearance, and tune-up intervals). Using the wrong engine spec can cause hard starting, poor mowing performance, or premature wear.
Related parts you may replace during mowing maintenance
If you are servicing the cutting system while you are identifying the engine, these model-matched parts are common wear items:
- Husqvarna lawn tractor mulching blade, 21-in 532134149 (blade condition affects cut quality)
- V-belt 532138255 (worn belts can slip and reduce deck performance)
- Molded ignition key 532140403 (handy if your key is worn or missing)
Last updated: January 2026
What year was Craftsman 917270911 made?
Craftsman model 917270911 was produced in the mid-2000s, most commonly around 2004 to 2006. For the most accurate date range for your exact tractor, we recommend matching the product identification information on the unit to the details shown in the 917270911 owner's manual.
How to pinpoint the exact build year on your tractor
We use the tractor’s identification information (not just the model number) to narrow the manufacturing year.
- Locate the product identification label (typically under the seat, on the frame, or near the engine area)
- Write down the serial number exactly as shown
- Compare the serial number format and any date codes to the identification guidance in the manual
- If the tractor has an engine model/type code plate, record that too (engine codes can help confirm timeframe)
- Keep the deck and chassis numbers handy if you are ordering parts like blades, belts, or steering components
Why the year matters
The build year affects parts compatibility for common wear items such as the mower deck blade, ground drive belt, steering linkage, and lift components. Even within the same Craftsman model family, small production changes can affect which part number fits.
Common parts that vary by production run
| System | What can change | Example part from this model’s parts list |
|---|---|---|
| Mower deck | Blade style, mandrel design | Husqvarna lawn tractor mulching blade, 21-in 532134149 |
| Drive | Belt length/profile | V-belt 532138255 |
| Steering | Linkage and shaft kits | Rally lawn tractor steering shaft kit 584371701 |
Quick tip before ordering parts
- Confirm your deck size and blade mounting style
- Check belt routing and measure the old belt if it is missing or shredded
- Match steering and lift parts by diagram callout when possible
Last updated: January 2026
Who makes Craftsman engines?
Craftsman engines are made by multiple manufacturers depending on the specific mower or tractor model and production year. For the Craftsman lawn tractor model 917270911, the engine is a 19.5 HP electric-start setup; the exact engine maker is identified on the engine ID label and in the 917270911 owner's manual.
How to identify the engine manufacturer on your 917270911
Use the engine’s ID tag (usually on the blower housing, valve cover area, or near the starter) to confirm the maker and get the correct service parts.
- Turn the key off and remove it; let the engine cool.
- Lift the hood and locate the engine model/type/code label.
- Write down the full engine model and spec numbers.
- Match those numbers when ordering tune-up parts (spark plug, air filter, fuel filter).
- Use the tractor model number 917270911 for chassis and deck parts (belts, blades, steering).
Common engine suppliers you may see on Craftsman riding equipment
Across Craftsman riding mowers and tractors, the most common engine brands include:
- Briggs & Stratton
- Kohler
- Kawasaki
Quick guide: tractor model vs. engine model
| What you’re working on | Use this identifier | Examples of parts |
|---|---|---|
| Engine service | Engine model/spec on the engine label | Spark plug, air filter, carburetor parts |
| Mower deck and drive | Craftsman model 917270911 | Ground drive belt, blades, mandrel parts |
Why it matters
The engine manufacturer determines the correct ignition, fuel, and air-intake service parts. Using the engine ID prevents ordering the wrong spark plug or filter, even when the tractor model number is correct.
Last updated: January 2026





