How old is my mower by serial number?
For Craftsman model 917374367, the serial number tells you the mower’s build identity, but the most reliable way to establish “how old” it is is to match the serial number on the mower’s decal to your recorded purchase date and any date code format shown in the 917374367 owner’s manual.
The model and serial numbers are on a decal on the rear of the lawn mower housing.
- Look at the rear of the mower deck (housing) for the decal
- Write down the full serial number exactly as shown
- Record the date of purchase (if you still have it)
- Keep the information with your maintenance records
Many walk-behind mowers use a serial number that includes a date code (often year and month, sometimes month and day). Once you locate the serial number, check for a pattern like these:
- YYMMDD (year, month, day)
- MMDDYY (month, day, year)
- YYMM (year, month)
- A leading 2-digit or 4-digit year embedded near the start
| If the serial starts with | Read it as | Example meaning |
|---|---|---|
| YYMMDD | Year-Month-Day | 230615 = June 15, 2023 |
| MMDDYY | Month-Day-Year | 061523 = June 15, 2023 |
| YYMM | Year-Month | 2306 = June 2023 |
Knowing the approximate build date helps us choose the right maintenance parts (blade, belt, cables) and confirm compatibility when you are troubleshooting issues like poor cut quality, drive problems, or worn controls.
If you are servicing the mower at the same time, confirm you are using the correct blade and hardware for this model; the parts list for 917374367 includes the husqvarna lawn mower 22-inch deck 3-in-1 blade 532421825.
Last updated: January 2026
How to find Craftsman model number?
On the Craftsman walk-behind mower model 917374367, the model number is typically printed on an ID sticker on the rear of the mower deck, near the lower handle mounting area. Use the number exactly as shown when ordering parts or checking specifications in the 917374367 owner's manual.
Check these common ID-label locations first:
- Back of the mower deck (rear-facing surface)
- Between or near the lower handle mounts
- Near the rear discharge door area (if equipped)
- On the deck housing close to the wheel height adjusters
- On a sticker or metal tag attached to the deck
Record the full ID information so we can match the correct parts diagram and hardware.
- Model number (example format: 917.374367 or 917374367)
- Serial number (helps identify production run changes)
- Engine model/type/code (Briggs & Stratton engines often use this)
| Item | What it’s used for | When you need it |
|---|---|---|
| Model number | Matching Craftsman parts diagrams | Always, before ordering parts |
| Serial number | Confirming version changes | When parts look different than expected |
| Engine numbers | Engine tune-up and fuel/ignition parts | When troubleshooting starting/running |
Use these practical alternatives:
- Compare your mower’s handle controls, deck style, and drive system to the diagrams in the 917374367 owner's manual
- Check for stamped numbers on the deck near the rear handle brackets
- If you are replacing common wear items, match by description and fit (for example, a 22-inch blade for this model is listed as husqvarna lawn mower 22-inch deck 3-in-1 blade 532421825)
Craftsman walk-behind mowers can look similar across multiple model numbers, but parts like the blade adapter, drive belt, zone control cable, and rear baffle can vary. Using the exact model number helps prevent ordering the wrong replacement part.
Last updated: January 2026
Should I use 87 or 91 gas for lawn mower?
For the Craftsman 917374367 gas walk-behind mower, we recommend using regular 87-octane unleaded gasoline; higher octane (like 91) does not add power or protection in this type of small engine. Use fresh fuel and keep ethanol at 10% (E10) or less as noted in the 917374367 owner's manual.
- Use fresh, clean unleaded gasoline.
- Use 87 octane for normal operation.
- Use gasoline with up to 10% ethanol (E10).
- Avoid fuel over E10 because it can create fuel-system issues and can void warranty coverage per the manual.
- If the mower will sit 30 days or longer, empty the tank and run the engine until the carburetor is dry.
Higher octane is mainly for engines designed for it (typically higher compression). Most walk-behind mower engines are designed to run correctly on regular fuel.
| Fuel choice | What you get | When to use it |
|---|---|---|
| 87 octane (regular) | Correct combustion for most mower engines | Everyday mowing |
| 91 octane (premium) | No performance benefit in most mowers | Only if your manual specifically requires it |
| E10 or less | Acceptable per manual | Normal fueling |
| Over E10 | Higher risk of storage and fuel-system problems | Avoid |
Using the right fuel helps prevent hard starting, stale-fuel varnish in the carburetor, and fuel-system corrosion during storage. The manual also calls out ethanol limits, which protects long-term reliability.
If you are dealing with old fuel or storage issues, follow the steps in how to keep lawn mower gas from going bad.
Last updated: January 2026





