How much does it cost to replace a riding lawn mower engine?
For a Craftsman riding lawn tractor like model 917274950, a full engine replacement typically runs $800 to $2,500 installed (engine plus labor). The total depends on engine type, whether the replacement is new or rebuilt, and how much related fuel and electrical work is needed.
Typical cost breakdown (what you are paying for)
- Engine: $500 to $2,000 (new OEM-style or equivalent replacement)
- Labor: $300 to $900 (commonly 4 to 8 hours at local shop rates)
- Shop supplies and incidentals: $25 to $100
- Optional add-ons (as needed): battery, belts, wiring repairs, fuel system parts
| Item | Typical range | Notes |
|---|---|---|
| Engine (new) | $500 to $2,000 | Biggest cost driver; varies by horsepower and crankshaft specs |
| Labor | $300 to $900 | More if rusted fasteners or extra diagnostics are required |
| “While you’re in there” parts | $25 to $250 | Belts, fuel line, clamps, tune-up items |
What can push the price higher on model 917274950
- Fuel contamination (old gas, varnish in the tank or lines)
- Electrical issues that caused the failure (shorts, bad connections)
- PTO and deck load problems that overstress the engine
- Worn drive components that make the tractor feel underpowered even with a good engine
If you are already chasing a no-start or crank issue before committing to an engine, we recommend checking the basics first using riding lawn mower engine spins but wont start video.
Why it matters
An engine swap is one of the highest-cost repairs on a riding mower. Confirming the real failure (engine internal damage vs. fuel delivery, ignition, or safety interlock problems) helps you avoid replacing a good engine and missing the root cause.
Quick pre-replacement checks (saves time and money)
- Verify the engine turns freely by hand (not seized)
- Check for spark and fresh fuel delivery
- Inspect wiring at the ignition circuit; a damaged harness can mimic engine failure
- Confirm the PTO is not dragging; a failing clutch can overload the engine (see lawn mower electric clutch 532174509)
- Look for fuel leaks or tank damage (see husqvarna lawn tractor fuel tank 532151346)
Last updated: February 2026
What kind of engine does a Craftsman riding lawn mower have?
Craftsman riding mowers, including model 917274950, use a gasoline-powered small engine; the exact “kind” (brand, horsepower, and whether it’s single-cylinder or V-twin) is determined by the engine’s own model and type/spec numbers on the engine ID label.
What to look for on Craftsman 917274950
The engine ID label is the reliable way to identify the engine installed on your tractor (especially if the engine was replaced).
- Find the ID tag on the blower housing, valve cover, or near the starter
- Record the engine brand (commonly Briggs & Stratton or Kohler on many Craftsman tractors)
- Write down the engine model plus type/spec numbers
- Use those numbers to match tune-up parts (air filter, spark plug, fuel filter)
- Clean the tag and take a clear photo before ordering parts
Typical engine types you’ll see on Craftsman riding mowers
Most Craftsman lawn tractors in this class use a 4-cycle, air-cooled gasoline engine with electric start.
| Engine “kind” | Common configuration | What it changes for you |
|---|---|---|
| Single-cylinder | 1 cylinder | Different plug, filter, and some service steps |
| V-twin | 2 cylinders | Often uses 2 plugs; different tune-up parts |
Parts on 917274950 that affect starting and PTO operation
If you’re asking about the engine because of a no-crank, no-start, or deck engagement issue, these model-matched parts are often involved:
- Switch.pto 582107601 (PTO engagement and safety interlock input)
- Molded ignition key 532140403 (worn key can cause intermittent electrical contact)
- Lawn tractor ignition harness 532170238 (damaged wiring can interrupt start/run signals)
- Husqvarna lawn tractor fuel tank 532151346 (fuel supply source for the carburetor)
Why it matters
Correct engine identification keeps you from ordering the wrong maintenance parts and helps you troubleshoot the right system first (fuel, ignition, or safety interlocks).
Last updated: February 2026
What model number is the Craftsman 917274950?
The model number for this Craftsman front-engine lawn tractor is 917274950. You will typically find this number on the tractor’s model and serial number label; matching the model number ensures you get the correct Craftsman parts and diagrams for repairs.
Where to find the model number on a lawn tractor
On most Craftsman riding mowers and lawn tractors, the model/serial label is located in one of these common spots:
- Under the seat (seat pan area)
- On the rear fender deck near the seat
- On the frame rail near the engine
- Near the footrest area on the chassis
- Under the hood area on the frame (less common)
Quick check: model number vs. part numbers
Use this table to avoid mix-ups when ordering parts.
| What you’re looking at | Example | What it’s used for |
|---|---|---|
| Model number | 917274950 | Identifies the exact tractor version |
| Part ID | 582107601 | Identifies a specific part listing |
| Part number | 174652 | Manufacturer’s number for the part |
Why it matters
Craftsman model numbers can look very similar, but small differences can change the deck setup, steering parts, belts, and electrical system. Using 917274950 helps us match the correct diagrams and compatible parts the first time.
Related part example (for confirmation)
If you are verifying you are on the correct parts list for model 917274950, a common electrical part shown for this model is the switch.pto 582107601.
- The PTO switch controls power to the electric clutch for blade engagement
- A mismatched switch can cause no-crank or no-blade-engagement symptoms
- Always compare connector style and mounting before ordering
Last updated: February 2026
What year did Craftsman make the 917274950?
Craftsman model 917274950 was made during the LT1000-era production run, which generally falls in the late 1990s through the mid-2000s. The exact build year is identified by the tractor’s product identification label (typically under the seat or on the rear fender area).
How to find the exact year on your 917274950
We use the ID label information to pinpoint the manufacturing date for Craftsman 917-prefix tractors.
- Park on a level surface, set the parking brake, and remove the key.
- Lift the seat and look for a white or silver product label.
- Write down the model and serial numbers exactly as shown.
- If present, note any date code or manufacture date printed on the label.
- Use that serial/date information when ordering parts so you match the correct production version.
What “917” means (and why the year can vary)
Many Craftsman riding mowers with model numbers starting with 917 were produced across multiple years with small running changes (wiring, deck hardware, steering parts, and belt routing). That is why the serial/date label is the best way to confirm the year for 917274950.
Quick reference: where to look and what you’ll find
| What you’re checking | Where to look | What to record |
|---|---|---|
| Product ID label | Under seat or rear fender area | Model and serial number |
| Engine ID tag | On the engine shroud/valve cover area | Engine model and code |
| Parts match | Parts diagrams and listings | Part ID and description |
Why it matters
The correct year (and serial range) helps us match the right belt length, PTO electrical parts, and steering hardware so you avoid returns and get the tractor cutting and driving correctly.
If you’re troubleshooting a no-mow condition while you’re identifying the tractor, the switch.pto 582107601 is a common electrical part involved in blade engagement on many Craftsman lawn tractors.
Last updated: February 2026
