Owner’s manual
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What is the average lifespan of a gas lawn mower?
A gas walk-behind mower like the Craftsman 247374400 typically lasts 8 to 10 years with normal residential use and routine maintenance; with consistent care, 10 to 15 years is common. In hours, many residential gas mowers reach roughly 500 to 1,000 operating hours before major repairs become more likely.
- Oil changes on schedule and using the correct oil type/amount
- Clean air filter and proper carburetor fuel delivery
- Blade condition (sharp, balanced, and not bent)
- Fuel quality and storage (fresh gas, stabilizer, no long-term stale fuel)
- Deck cleanliness (less corrosion and better airflow)
- Operating conditions (dusty yards, steep slopes, thick/wet grass increase wear)
Use your 247374400 owner’s manual for the exact intervals and procedures for your mower.
- Change engine oil regularly; do not overfill
- Replace or clean the air filter as needed
- Inspect and service the spark plug during tune-ups
- Keep the underside of the mower deck clean and dry
- Check fasteners and controls for looseness and wear
- Winterize properly before off-season storage
| Usage pattern | Typical hours per season | Typical lifespan range |
|---|---|---|
| Light (small yard) | 20 to 40 | 10 to 15 years |
| Average (most homes) | 40 to 70 | 8 to 12 years |
| Heavy (large/rough yard) | 70 to 120 | 5 to 10 years |
Lifespan is mostly a maintenance and usage story. Staying ahead of oil, fuel, and blade care reduces hard-starting, rough running, vibration, and premature engine wear, which are the most common reasons gas mowers get replaced.
For deck care tips that also reduce strain on the engine, see how to keep grass clippings from sticking to a mower deck.
Last updated: January 2026
How old is my lawn mower by serial number?
For Craftsman walk-behind mower model 247374400, the exact mower age usually cannot be identified from the model number alone; you typically need the product serial number (from the mower’s ID label) or the engine code/date. We recommend using the serial number format shown in the Craftsman 247374400 owner’s manual to locate the correct label and interpret the date information.
On most Craftsman walk-behind mowers, the product ID label is on the mower deck or rear housing. Also check the engine shroud for the engine model and code.
- Look on top of the deck near the rear discharge area
- Check the rear of the deck behind the engine
- Look near the height-adjustment brackets or wheel area
- Check the handle mount area on the deck
- If the mower label is missing, use the engine’s ID tag (often on the blower housing)
Serial number formats vary by manufacturer and production run, so we decode based on the label style you have.
| What you have | What it tells you | What to do next |
|---|---|---|
| Mower serial number | Mower build date (sometimes) | Look for a date code embedded in the serial |
| Engine code number | Engine manufacture date | Decode the engine code; it is often the fastest path |
| Only a model number (247374400) | Model family, not a build date | Use the mower serial or engine code instead |
Common date-code patterns you may see include:
- MMDDYY (month-day-year)
- YYMMDD (year-month-day)
- YYWW (year-week)
If the mower’s label is damaged, replacing the label can help keep the correct identification on the machine for future parts lookups and service records. For this model, see the decal 777I20793.
Knowing the manufacture date helps us match the right parts (blade, air filter, drive components) and avoid ordering a look-alike part that does not fit your exact Craftsman configuration.
Last updated: January 2026
How to read a Craftsman mower serial number?
For Craftsman model 247374400 walk-behind mowers, the serial number format is not universal across all Craftsman mowers, so we cannot reliably decode the build date from the digits alone without the model’s labeling guidance. Use the serial tag details and the 247374400 owner’s manual to confirm what your serial number represents.
On most Craftsman walk-behind mowers, the model and serial information is printed on a label or stamped plate. Common locations include:
- Rear of the deck near the discharge chute
- Top of the deck near the engine mounting area
- Back of the mower housing near the height adjuster
- Handle support bracket area
- Under the rear flap (if equipped)
Craftsman serial numbers can be encoded differently depending on the manufacturing source and product line. For model 247374400, the safest approach is to use the label text and manual guidance rather than assuming a month-day-year pattern.
| What you’re trying to learn | What to use first | Why |
|---|---|---|
| Exact model identification | Model number: 247374400 | Parts compatibility is tied to the model number. |
| Production code or date | Serial number plus label wording | The same digit pattern can mean different things. |
| Correct replacement parts | Model number plus diagrams | Prevents ordering the wrong blade, cable, or fastener. |
Before you interpret the digits, verify these details on the tag:
- Look for words like “Serial”, “S/N”, “MFG”, or “Date”
- Note any letters mixed into the serial number (often meaningful)
- Record the full serial number exactly as printed
- Confirm the mower is a walk-behind (not a riding mower)
Reading the serial number correctly helps when you are matching the right Craftsman parts, confirming the correct engine family, and avoiding fit issues during repairs and maintenance.
Last updated: January 2026
