Owner’s manual
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What engine does Craftsman riding mower use?
The Craftsman riding mower model 917273481 uses a 20.0 HP engine (42-inch mower deck, electric start, automatic transmission). For the exact engine make and service details for your tractor, use the specifications and maintenance sections in the 917273481 owner's manual.
What we can confirm for model 917273481
From the model-specific documentation, this tractor is identified as:
- 20.0 HP front-engine lawn tractor
- 42-inch mower deck
- Electric start
- Automatic transmission
- Low-emission engine design (operates differently than older engines)
Engine brand and identification: how to check
Some Craftsman tractors were built with engines from different manufacturers across production runs. The fastest way to identify what your specific tractor has installed is to check the engine label and match it to the manual.
- Look for the engine ID label on the blower housing or valve cover
- Record model, type, and code (or spec number)
- Compare those numbers to the engine information in the 917273481 owner's manual
- Use the engine ID when ordering tune-up parts (spark plug, air filter, fuel filter)
Quick ID checklist
| Where to look | What you need | Why it helps |
|---|---|---|
| Engine shroud / valve cover | Model and spec/type code | Identifies the exact engine family |
| Tractor frame tag | Model 917273481 | Confirms the correct tractor manual |
| Hood/decal area | HP decal | Confirms advertised horsepower |
Why it matters
The engine manufacturer and spec code determine the correct maintenance parts and settings (oil type, spark plug gap, air filter style). Using the tractor model alone can lead to the wrong engine tune-up parts.
Last updated: February 2026
What are the parts of a lawn mower engine?
On the Craftsman lawn tractor model 917273481 (Kohler CV624 engine), the engine is made up of fuel, air, ignition, and cooling systems plus internal rotating parts. Common engine parts include the air intake and grass screen, flywheel, spark plug, fuel filter, carburetor, and muffler; see the 917273481 owner's manual for diagrams and service intervals.
Main engine systems and what they do
- Fuel system: fuel tank, fuel lines, in-line fuel filter, carburetor (meters fuel)
- Air intake and filtration: air filter, intake ducting (keeps dirt out)
- Ignition and charging: ignition switch, ignition coil, spark plug, flywheel, rectifier-regulator
- Cooling: blower housing, baffles, grass screen, cooling fins (prevents overheating)
- Exhaust: muffler (reduces noise and directs exhaust)
Parts you will see called out in the 917273481 manual diagrams
The Kohler CV624 sections commonly list items like these:
| Area | Example parts you may see listed | What to look for when troubleshooting |
|---|---|---|
| Blower housing and baffles | Grass screen, fan, spacers, screws | Debris buildup, missing shrouds, overheating |
| Ignition/charging | Flywheel, key, rectifier-regulator, connectors | No spark, weak charging, loose wiring |
| Tune-up items | Spark plug, air filter, fuel filter | Hard starting, loss of power, rough running |
Quick maintenance checks that protect engine parts
- Keep the grass screen and cooling fins clean to avoid overheating damage.
- Replace the spark plug at the start of each mowing season or about every 100 hours.
- Replace the in-line fuel filter once each season (so fuel flow to the carburetor stays strong).
- Use fresh fuel; stale fuel commonly causes loss of power and starting problems.
- Inspect the muffler for corrosion and replace if needed.
Why it matters
Knowing which system a symptom belongs to speeds up diagnosis. For example, “loss of power” often traces to airflow restriction (dirty screen/fins), fuel restriction (clogged fuel filter), or ignition issues (spark plug or loose plug wire).
Last updated: February 2026
Who makes Craftsman engines?
Craftsman engines are made by several manufacturers depending on the specific mower and production run. For the Craftsman lawn tractor model 917273481, the owner’s documentation indicates a Kohler engine (you will see this referenced in the decals/engine identification information in the 917273481 owner's manual).
How to confirm who made your engine (fast checks)
Use these checks on your tractor instead of relying only on the Craftsman nameplate:
- Look for the engine brand badge on the blower housing (top/front of engine)
- Find the engine model and spec numbers on the engine ID label (often near the valve cover or starter)
- Match the engine model/spec to the engine maker’s parts lookup
- Check the tractor documentation for engine identification notes
- Verify the deck and chassis model number is 917273481 so you are using the correct parts list
What “Craftsman engine” usually means
Craftsman is the equipment brand; the engine is commonly sourced from major engine makers. On riding mowers and lawn tractors, the most common suppliers you will see are:
| Engine maker | Where you’ll usually see it | What to look for |
|---|---|---|
| Briggs & Stratton | Many Craftsman walk-behind and riding models | “Briggs & Stratton” label and model-type-code numbers |
| Kohler | Many mid to higher HP lawn tractors | “Kohler” label and model-spec numbers |
| Kawasaki | Some premium lawn tractors | “Kawasaki” label and model-code numbers |
Why it matters
The engine maker determines the correct tune-up parts and service specs (oil type, spark plug, air filter, fuel filter, valve lash). Using the engine’s model/spec numbers prevents ordering the wrong maintenance parts.
Related parts you might replace during deck service
If you are servicing the 42-inch deck on this tractor, these model-matched parts are commonly replaced together:
- Lawn tractor 42-in deck high-lift blade 532138971 (bagging and strong lift)
- Husqvarna lawn tractor mulching blade, 21-in 532134149 (mulching setup)
- Husqvarna lawn tractor mandrel assembly 532130794 (spindle/mandrel if noisy or loose)
Last updated: February 2026
What year did Craftsman make the 917273481?
Craftsman model 917273481 is a specific riding lawn tractor model number, but the exact production year is not printed in the parts list pages shown in the manual excerpts. For the most accurate year, we use the tractor’s product identification label (typically under the seat or on the frame) and match it to the model and serial information in the 917273481 owner's manual.
How to find the year on your tractor
Use these quick checks on your Craftsman lawn tractor:
- Look for the model and serial label under the seat, on the rear fender pan, or on the frame rail.
- Write down the full serial number exactly as shown.
- Compare the model number format (917.xxxxxxx) and serial details to the identification section in the 917273481 owner's manual.
- If the label is damaged, check for a second label on the chassis area near the rear wheels.
- Keep the label info with your maintenance records for future parts lookups.
What we can confirm from the documentation
The manual excerpts clearly identify the tractor as MODEL NUMBER 917.273481 and show model-specific assemblies (steering, engine, seat, decals). That confirms you have the correct model documentation, even though it does not list a single “manufactured in” year in the parts diagrams.
Examples of model-specific details shown in the manual
| Section in manual | What it helps with | Typical use |
|---|---|---|
| Steering assembly | Steering linkage and front axle parts | Diagnosing loose steering, worn joints |
| Engine section | Engine configuration and related hardware | Ordering engine-related service parts |
| Decals section | Decal and label references | Replacing missing safety/operation decals |
Why it matters
The production year affects engine variant, deck configuration, and small design changes that impact parts fit. Confirming the year using the tractor label helps ensure you order the correct blade, belt, or steering part the first time.
Common parts that still require model-accurate matching
Even on the same 42-inch deck family, parts can vary by build:
- Blades (mulching vs. high-lift)
- Ground drive belt length
- Mandrel and spindle components
- Steering drag link and tie rod
- Deck lift linkage hardware
If you are servicing the mower deck, matching by model is especially important; for example, you can compare blade options like the husqvarna lawn tractor mulching blade, 21-in 532134149 versus the lawn tractor 42-in deck high-lift blade 532138971.
Last updated: February 2026
