Owner’s manual
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What engine does Craftsman riding mower use?
The Craftsman lawn tractor model 917273399 is an 18.0 HP riding mower with a mowemission engine (an emissions-compliant design that can operate differently than older engines). For the exact engine make and model number, use the engine identification details shown in the 917273399 owner's manual.
How to identify the exact engine on model 917273399
We match the correct tune-up and repair parts by the engine’s model-type-code (or similar ID) from the engine label, not just the tractor model number.
- Park on a level surface, set the parking brake, and remove the key
- Let the engine cool completely before touching shrouds or muffler areas
- Look for an engine ID label on the blower housing, valve cover, or near the starter
- Write down the full engine ID exactly as shown (model, type, code)
- Use that engine ID when selecting parts like spark plugs, air filters, and fuel filters
What we can confirm from the owner’s manual
The manual for this specific tractor provides the most reliable baseline specs for the powertrain and operation.
| Item | What applies to 917273399 |
|---|---|
| Horsepower rating | 18.0 HP |
| Starting system | Electric start |
| Drive type | 6-speed transaxle |
| Engine design note | Mowemission engine (operates differently than earlier designs) |
Why it matters
Engine families can share the same horsepower rating but use different ignition parts, filters, belts, and maintenance procedures. Using the engine ID prevents ordering the wrong service parts and helps keep starting, charging, and mowing performance consistent.
Last updated: January 2026
Do Craftsman mowers use Briggs and Stratton engines?
Yes, many Craftsman mowers and lawn tractors use Briggs and Stratton engines; the Craftsman lawn tractor model 917273399 specifically lists a Briggs engine (Briggs model 31P777-0299-E1) in the engine breakdown in the 917273399 owner's manual.
What this means for parts and service
Engine brand matters because tune-up parts, ignition components, and fuel system parts are matched to the engine model, not just the tractor model.
- Check the engine model number on the engine shroud or valve cover before ordering parts.
- Use the tractor model (917273399) to find chassis and deck parts.
- Use the Briggs engine model (31P777-0299-E1) to match engine-specific parts.
- If your tractor has hard starting or poor cutting, confirm the deck drive and blade condition too.
Quick identification guide
| What you are checking | Where to look | What you should see |
|---|---|---|
| Tractor model | Frame tag under seat or fender area | 917273399 |
| Engine model | Engine label/shroud | 31P777-0299-E1 |
| Mower deck size | Deck shell decal or manual specs | 42-inch deck |
Related deck parts customers commonly replace
If your question is really about performance (cut quality, discharge, or vibration), blades and deck hardware are often the first place we look.
- For mulching: husqvarna lawn tractor mulching blade, 21-in 532134149
- For higher lift and discharge: lawn tractor 42-in deck high-lift blade 532138971
- For belt-driven blade issues (blades not rotating): inspect the deck belt and idlers; a worn ground drive belt is different from the deck belt, but it is also a common wear item like the v-belt 532138255.
Why it matters
Knowing whether your Craftsman mower uses a Briggs and Stratton engine helps you buy the right maintenance parts and troubleshoot correctly; engine issues (no-start, clicking, backfiring) are diagnosed differently than deck or transaxle problems.
Last updated: January 2026
Who makes Craftsman engines?
For the Craftsman lawn tractor model 917273399, the engine brand depends on the specific tractor configuration and production run; Craftsman commonly used engines from Briggs & Stratton, Kohler, and Kawasaki across its riding mower lineup. The fastest way to confirm the exact engine maker on your tractor is to match the engine ID tag to the engine information listed in the 917273399 owner's manual.
How to identify the engine manufacturer on your tractor
Look for the engine identification label, then match it to the manual and parts information.
- Lift the hood and locate the engine ID label (often on the blower housing, valve cover, or near the starter)
- Write down the engine model, type, and code (or spec number)
- Compare those numbers to the engine section in the manual
- If the label is dirty, wipe it gently so the numbers are readable
- Use the engine model and spec to buy the correct tune-up and maintenance parts
Common engine makers you will see on Craftsman riding mowers
Craftsman has sourced engines from multiple manufacturers over the years. These are the most common for riding mowers and lawn tractors:
| Engine maker | What the ID tag often looks like | Typical clue words |
|---|---|---|
| Briggs & Stratton | Model-Type-Code format | “Briggs & Stratton”, “Intek” |
| Kohler | Model and spec number | “Kohler”, “Courage”, “Command” |
| Kawasaki | Model and spec number | “Kawasaki”, “FR/FS” series |
Why it matters
The engine manufacturer determines the correct air filter, spark plug, oil filter, and sometimes the starter and carburetor parts. Using the engine ID prevents ordering parts that fit the tractor chassis but not the engine.
Related parts you might replace during mowing season
Even when the engine is running well, cut quality issues are often deck-related. For this model, common wear items include blades and the ground drive belt.
- Lawn tractor 42-in deck high-lift blade 532138971 for bagging and strong lift
- Husqvarna lawn tractor mulching blade, 21-in 532134149 for mulching setups
- V-belt 532138255 if the tractor slips or loses drive under load
Last updated: January 2026
