Owner’s manual
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What engine does Craftsman riding mower use?
The Craftsman lawn tractor model 917273392 uses a Briggs engine model 31H777 (Type 0297-E1). This is the engine family specified in the tractor’s documentation, and it’s paired with a 42-inch mower deck and a 6-speed transaxle (as equipped on this model).
Where to confirm the exact engine ID on your tractor
We recommend matching what’s on your tractor to the documentation and the engine label.
- Check the engine shroud or valve cover area for the Briggs model and type numbers
- Match the numbers to the engine listing in the 917273392 owner’s manual
- Use the engine model and type when ordering engine-specific parts (carburetor, ignition, gaskets)
- If the label is dirty, wipe it clean and take a photo before ordering parts
What the engine numbers mean (quick reference)
| What you’ll see | Example for this model | Why it matters |
|---|---|---|
| Engine model | 31H777 | Identifies the engine family |
| Type number | 0297-E1 | Narrows down the exact build configuration |
| Tractor model | 917273392 | Identifies the mower and its assemblies |
Related mower parts that affect “engine performance” symptoms
If the engine runs but the tractor loses power while mowing, the issue is often maintenance or deck load, not the engine itself.
- Dull or incorrect blades can overload the engine
- Grass buildup under the deck increases drag
- A worn deck drive system can reduce cutting efficiency
- Old fuel, dirty air filter, or a fouled spark plug can cause bogging
If you’re refreshing the cut quality on this 42-inch deck, common blade options include the husqvarna lawn tractor mulching blade, 21-in 532134149 and the lawn tractor 42-in deck high-lift blade 532138971 (use the blade type that matches your mowing and bagging setup).
Why it matters
Using the correct Briggs 31H777 Type 0297-E1 identification prevents wrong-part orders and speeds up troubleshooting, especially for fuel, ignition, and carburetor-related repairs.
Last updated: January 2026
How much does it cost to replace a riding lawn mower engine?
For a Craftsman lawn tractor model 917273392, a full engine replacement typically costs about $800 to $2,500 installed (engine plus labor). The total depends on the exact engine spec, whether you choose new or rebuilt, and how much teardown is required.
What drives the total cost
- Engine price: Most riding mower engines fall roughly in the $500 to $1,800 range.
- Labor time: Commonly 4 to 8 hours for a riding lawn tractor engine swap.
- Extra parts: Belts, wiring, fuel lines, and mounting hardware often add cost.
- Shop rates: Local labor rates vary widely.
- Why the engine failed: Overheating, low oil, or fuel issues can damage related components.
Typical cost breakdown
| Cost item | Typical range | Notes |
|---|---|---|
| Engine (new or rebuilt) | $500 to $1,800 | Varies by horsepower and crankshaft specs |
| Labor | $300 to $900 | Often 4 to 8 hours |
| Misc. parts and supplies | $25 to $200 | Filters, plugs, clamps, fluids |
| Total installed | $800 to $2,500 | Most common real-world range |
Before you replace the engine, rule out common “no power” causes
Your 917273392 manual troubleshooting chart lists several issues that can mimic a failing engine (loss of power), including dirty air filter, stale fuel, dirty fuel filter, low oil, and spark plug problems. Use the 917273392 owner’s manual to follow the troubleshooting steps and maintenance schedule.
- Replace/clean the air filter and air screen/cooling fins
- Drain old fuel and refill with fresh gasoline
- Replace the fuel filter if flow is restricted
- Check oil level and condition; change oil if dirty
- Inspect spark plug and wire connection
Why it matters
An engine replacement is one of the highest-cost repairs on a riding mower. Confirming fuel, air, ignition, and cooling issues first can restore performance at a fraction of the cost and helps prevent repeat engine damage.
Last updated: January 2026
Who makes Craftsman engines?
Craftsman engines are made by multiple engine manufacturers, and the maker depends on the specific mower or tractor model. For Craftsman lawn tractor model 917273392, confirm the engine maker by checking the engine shroud label and the specifications section in the 917273392 owner's manual.
How to identify the engine maker on model 917273392
Use these quick checks on your Craftsman riding mower:
- Read the engine brand decal on the blower housing (the cover over the flywheel).
- Locate the engine model and type code stamped on the engine (often near the valve cover, muffler, or starter).
- Compare the engine model/type to the product specifications listed in the manual.
- Check for an emissions label; it often lists the engine family and manufacturer.
- If labels are missing, match the tractor’s configuration using the manual diagrams and parts lists.
Common engine makers used on Craftsman riding mowers
These are the most common suppliers you will see across Craftsman lawn tractors:
| Engine maker | Typical identifiers | Where to look |
|---|---|---|
| Briggs & Stratton | Model-type-code format, brand badge | Blower housing, valve cover area |
| Kohler | Command/Courage series markings | Valve cover, engine tag |
| Kawasaki | FR/FS series markings | Engine tag near starter or shroud |
Why it matters
The engine maker and engine model code determine the correct tune-up parts (spark plug, air filter, oil filter), oil type, and maintenance intervals; it also speeds up troubleshooting for no-start and no-crank problems.
Related DIY help
Last updated: January 2026
