Owner’s manual
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How old is my mower by serial number?
On Craftsman walk-behind mower model 917370411, the model and serial numbers are printed on a decal on the rear of the lawn mower housing; we use that serial number plus your purchase date and any engine date code to determine the mower’s age. See the identification section in the 917370411 owner's manual.
Where to find the serial number on model 917370411
The manual specifies the identification decal location on this mower:
- Look on the rear of the mower housing (rear deck area)
- Find the decal that lists both the model and serial numbers
- Write the serial number exactly as shown (include any letters and digits)
How we determine age from the serial number
Craftsman serial numbers can include date information, but the format varies by production run; the most reliable approach is to combine multiple clues.
- Check the serial number for a date-code segment (often grouped digits)
- Compare against your recorded date of purchase (the mower is built before purchase)
- Check the engine label (many Briggs and Stratton engines include a build date or code)
- Use the mower’s parts configuration as a cross-check; for example, the deck and cutting system on this model commonly uses a 22-inch 3-in-1 blade such as the 22-inch deck 3-in-1 blade 532421825
Quick reference: what each number tells you
| Identifier | Where it’s used | What it helps with |
|---|---|---|
| Model number (917370411) | Parts lookup and diagrams | Ensures correct replacement parts fit |
| Mower serial number | Unit identification | Helps narrow production timeframe |
| Engine code (on engine label) | Engine identification | Helps date the engine, often close to mower assembly |
Why it matters
Knowing the mower’s age helps us plan maintenance (blade wear, cable stretch, drive system wear) and prevents ordering parts for a similar Craftsman mower that looks the same but uses different components.
Last updated: January 2026
Should I use 87 or 91 gas for lawn mower?
For the Craftsman lawn mower model 917370411, use regular 87-octane unleaded gasoline; higher octane (like 91) does not improve performance in this mower. The key fuel requirement is to use gasoline with no more than 10% ethanol (E10) as noted in the 917370411 owner's manual.
What fuel to use (and what to avoid)
- Use fresh, regular unleaded 87 octane.
- Use fuel labeled E10 or less (up to 10% ethanol).
- Avoid E15, E20, E85 or any fuel over 10% ethanol (it can cause fuel-system issues and can void warranty coverage).
- Avoid stale gas (especially gas left in the can or tank for weeks or months).
- Avoid mixing in engine or carburetor cleaner directly into the fuel tank.
Quick comparison
| Fuel choice | OK for 917370411? | What to expect |
|---|---|---|
| 87 octane, E10 or less | Yes | Normal starting, power, and reliability |
| 91 octane, E10 or less | Yes (but unnecessary) | No added power or protection |
| Any octane over E10 (E15+) | No | Higher risk of storage and fuel-system problems |
If the mower will sit for 30 days or longer
Alcohol-blended fuels can attract moisture during storage. For longer storage, we recommend:
- Empty the tank.
- Start the engine and let it run until the fuel lines and carburetor are empty.
- Refill with fresh fuel next season.
For seasonal storage steps, follow the 917370411 owner's manual.
Why it matters
Using the right fuel helps prevent hard starting, rough running, and carburetor problems. For this Craftsman walk-behind mower, ethanol content (E10 max) and fuel freshness matter more than choosing 87 vs 91 octane.
Last updated: January 2026
What model number is the Craftsman 917370411?
The model number is 917.370411; it’s printed on the Craftsman rotary lawn mower’s model label and shown in the product documentation for this exact walk-behind mower. For confirmation and parts identification, use the model number exactly as 917370411 when searching.
Where to find the model number on the mower
We typically see the model label in one of these spots on a Craftsman walk-behind mower:
- On the rear of the deck near the discharge opening or rear door
- On the top of the deck near the engine mounting area
- Near the handle mounting brackets
- On a sticker or metal tag that also lists engine details
For the official reference, check the 917370411 owner's manual.
Why the exact model number matters
Using the full model number helps us match the correct diagrams and OEM replacement parts for your mower’s deck, drive system, and controls.
- Prevents ordering the wrong blade, cable, or wheel parts
- Ensures the correct fit for 22-inch deck components
- Helps match drive and zone control cable routing
- Speeds up troubleshooting and maintenance lookups
Common “model number” mix-ups (and what to use instead)
Some listings show marketing names or series names; those are not the same as the Sears model number.
| What you might see | What it means | What to use for parts |
|---|---|---|
| M210 (or similar name) | Product/retail name | 917370411 |
| Engine series (example: 675 Series) | Engine family | 917370411 |
| Deck size (22-inch) | Feature/spec | 917370411 |
Related parts you may see listed for this model
When you search parts by 917370411, you may see items like these (examples from the parts list):
- Lawn mower control cable 587326601 (zone control cable)
- Lawn mower drive cable 586638001 (self-propel drive control)
- Mulcher door 594942002 (mulching door)
Why it matters
The model number is the fastest way to get the right Craftsman 917370411 parts and diagrams, especially for drive components, rear door assemblies, and deck hardware.
Last updated: January 2026
