Owner’s manual
View engine
How to identify a lawn mower engine?
To identify the engine on your Craftsman 917273321 front-engine lawn tractor, locate the engine’s model and type numbers on the engine itself (not the tractor frame). On many V-twin engines, the model number is stamped into the metal near the top of a cylinder or on the blower housing; clean the area first so the stamp is readable. See the owner's manual for your tractor’s engine and service identification guidance.
Where to look for the engine ID
Check these common locations first (use a flashlight and wipe off dirt and oil):
- Stamped into metal near the top of the cylinder head area (often right or left side)
- On the engine blower housing or shroud (a label or stamped pad)
- Near the valve cover area or on a flat machined pad on the block
- Under the hood near the engine, on a label attached to the engine (not the tractor)
- On an emissions label (often includes family and displacement info)
Quick steps to get a readable model number
- Turn the key off, remove the key, and let the engine cool.
- Lift the hood and identify a flat area with stamped characters or a label.
- Clean the area with a rag; avoid spraying water directly on electrical components.
- Write down every character exactly as shown (letters and numbers).
What numbers matter (and what they’re used for)
| What you find on the engine | What it helps with | Example use |
|---|---|---|
| Engine model/type code | Correct engine parts and tune-up specs | Air filter, spark plug, carb parts |
| Spec/trim number | Exact variations within the same engine model | Starter, charging system parts |
| Serial number | Production run details | Matching certain engine subcomponents |
Why it matters
Your tractor model (917273321) identifies the chassis and mower deck parts, but the engine ID is what ensures you get the correct engine-specific parts and maintenance specs. Using the engine model/type code prevents ordering the wrong ignition, fuel, or starting components.
Last updated: February 2026
What brand engine does Craftsman use?
Craftsman riding mowers and lawn tractors use engines from several manufacturers, depending on the specific tractor and production run. For Craftsman model 917273321, the engine brand is identified on the engine itself and in the specifications section of the owner's manual.
What you will typically see on Craftsman tractors
Across Craftsman lawn tractors, the most common engine brands include:
- Briggs & Stratton
- Kohler
- Kawasaki
- Other OEM-supplied engines used on select models and years
How to confirm the engine brand on model 917273321
Use these quick checks on your tractor:
- Look for the engine shroud decal or valve cover label; it usually shows the engine maker and horsepower
- Check the engine model and type numbers stamped on the engine (often near the starter, valve cover, or blower housing)
- Match the engine identification to the engine section in the owner's manual
- If you are ordering tune-up parts, use the engine model number (not just the tractor model number)
Why it matters
The engine brand and engine model number determine the correct maintenance parts (spark plug, air filter, fuel filter, oil filter) and the right service specs. Using the tractor model alone can lead to the wrong engine parts.
Helpful reference: tractor specs you can use right away
These specs are listed for Craftsman 917273321 in the manual and help with basic maintenance planning:
| Spec item | Specification |
|---|---|
| Fuel capacity | 3.5 gallons, unleaded regular |
| Oil type (above 32°F) | SAE 10W-30 |
| Oil type (below 32°F) | SAE 5W-30 |
| Spark plug | Champion RC12YC (gap .030") |
Last updated: February 2026
How do I tell what year my Craftsman riding mower is?
To tell the year of your Craftsman riding mower, we match the model and serial information on the tractor to the identification format shown for your equipment. For model Craftsman 917273321, the quickest path is to use the ID label details alongside the owner's manual.
Where to look on the mower
Check the product identification label (often under the seat, on the frame near the rear wheels, or under the hood area). Write down:
- Model number (yours is 917273321)
- Serial number (a longer string of letters and numbers)
- Any date code printed on the label
- Engine model and type (helpful if the tractor label is worn)
How the “date code” usually works
Many Craftsman riding mowers use a 6-digit date code format where:
- First 2 digits = month
- Next 2 digits = day
- Last 2 digits = year
Example
| Code | Reads as | What it means |
|---|---|---|
| 072811 | 07 / 28 / 11 | July 28, 2011 |
If your label shows a code like that, the last two digits give you the year.
If you do not see a clear date code
Use these checks to narrow it down:
- Confirm the model number exactly matches 917273321 (including punctuation on the label, if shown)
- Compare the tractor’s features to the specifications and diagrams in the owner's manual
- If the ignition key has been replaced, do not use the key style to date the mower (keys are commonly swapped). If you need a replacement key for this model, use the correct molded ignition key 532140403.
Why it matters
Knowing the correct year helps us match the right parts list and diagrams for maintenance items like belts, steering parts, and PTO electrical components. That prevents ordering the wrong drive belt, switch, or hardware for your Craftsman tractor.
Last updated: February 2026
How to look up Craftsman model number?
On a Craftsman riding lawn tractor like model 917273321, the model number is printed on the tractor’s identification label. The quickest way to look it up is to find that label on the tractor, then match the full model number when ordering parts or checking specs in the 917273321 owner's manual.
Where to find the model number label
On most Craftsman riding mowers and garden tractors, the ID label is typically located in one of these spots:
- Under the seat (lift the seat and look on the seat pan or frame)
- On the frame rail near the engine compartment
- Near the rear fender area, close to the seat
- Under the hood area on the chassis (less common)
How to use the model number once you find it
Use the model number exactly as shown (including dots or dashes if present) to:
- Pull the correct parts diagrams and parts list for your tractor
- Confirm product specifications (oil type, tire pressure, blade bolt torque)
- Verify the correct version of a part before ordering
- Cross-check maintenance intervals and adjustment procedures
Quick check: model number vs. part number
| What you’re looking at | What it identifies | Example for this tractor |
|---|---|---|
| Model number | The exact tractor version | 917273321 |
| Part number / part ID | A specific replacement part | Hub cap 104757X / 532104757 |
Why it matters
Craftsman tractors often have similar-looking frames and decks across multiple model numbers. Using the exact model number helps ensure the parts diagrams and repair steps match your tractor’s steering, deck, and drive configuration.
Last updated: February 2026
What kind of engine does a Craftsman riding lawn mower have?
The Craftsman riding lawn mower model 917273321 uses a gasoline, electric-start engine; the exact engine manufacturer and engine model/type code are identified on the engine ID label and in the Product Specifications section of the owner's manual.
What’s confirmed for model 917273321
From the model’s manual, we can use these tractor-level engine-related specs for maintenance and troubleshooting:
- Fuel: unleaded regular gasoline
- Fuel capacity: 3.5 gallons
- Oil type: SAE 10W-30 (above 32°F), SAE 5W-30 (below 32°F)
- Spark plug: Champion RC12YC
- Spark plug gap: .030 in.
- Charging system: 15 amps at 3600 RPM
How to identify the engine make and model on your tractor
Craftsman tractors commonly use engines from makers such as Briggs and Stratton or Kohler; the correct way to confirm yours is by reading the engine’s ID tag.
Check these common label locations:
- On the blower housing (top/front of engine)
- On the valve cover area
- Near the spark plug
- On the engine block near the muffler or heat shield
Write down all numbers shown (model, type, code, and serial). Those numbers determine the correct air filter, fuel filter, and tune-up parts.
Quick spec snapshot (from the manual)
| Item | Spec used for 917273321 maintenance |
|---|---|
| Fuel type | Unleaded regular |
| Fuel capacity | 3.5 gallons |
| Spark plug | Champion RC12YC (gap .030 in.) |
| Charging output | 15 amps at 3600 RPM |
Why it matters
The engine make and model control the exact service parts and settings. Using the correct oil grade, spark plug, and charging specs helps prevent hard starting, loss of power, and premature engine wear.
Last updated: February 2026
