Craftsman 917372900 lawn mower Parts

On many Craftsman walk-behind mowers, the serial number is used mainly to identify the production run, while the model number (for this mower, 917372900) is what you use to match parts and the correct documentation. For model 917372900, start by confirming the model tag and then use the serial number as a secondary identifier.

Where to find the model and serial information

We recommend checking these common locations on a Craftsman walk-behind mower:

• On the rear of the mower deck near the discharge opening
• On the top of the deck near the engine mounting area
• On the handle bracket area (near the lower handle)
• In the documentation section of the 917372900 owner's manual

How Craftsman serial numbers are commonly formatted

Craftsman serial formats vary by manufacturer and era, so the safest approach is to read the label exactly as printed and use it alongside the model number.

Common patterns you may see:

• A numeric date-style code (often interpreted as month, day, year)
• A longer alphanumeric code that includes a plant or line identifier
• A short code plus a separate “date of manufacture” line

Quick interpretation guide (when the label is date-coded)

Serial pattern example	Typical meaning	What to do with it
MMDDYY	Month, day, year	Use it to estimate build date and confirm parts revisions
YYMMDD	Year, month, day	Same purpose; confirm by checking which order makes sense
Alphanumeric string	Factory/run code	Use it when contacting support or cross-checking parts diagrams

Why it matters

The model number (917372900) determines the correct parts list and diagrams. The serial number helps when there were mid-year changes, such as a different handle hardware set, discharge components, or control cable routing.

Parts that are often affected by production changes

If you are matching parts and something looks different, compare these areas first:

• Blade and hub area (example: lawn mower blade adapter 581547901)
• Operator control system (example: husqvarna lawn mower zone control cable 532440934)
• Discharge/mulch components (example: mulcher door 596210401)

Last updated: January 2026

For the Craftsman 917372900 gas walk-behind mower, use regular 87-octane gasoline; higher octane (like 91) does not improve performance in small mower engines. The key requirement is fuel quality: use fresh gas and keep ethanol at 10% or less (E10) as specified in the 917372900 owner's manual.

What fuel to use (and what to avoid)

• Use 87 octane unleaded gasoline.
• Use fresh fuel (old gas is a top cause of hard starting and rough running).
• Use E10 or less; the manual notes that gasoline exceeding 10% ethanol (E10) can void the product warranty.
• Avoid E15/E85 fuels.
• Avoid mixing in additives that are not intended for small engines.

Quick comparison: 87 vs 91 in a walk-behind mower

Fuel choice	What you get	Best use case
87 octane (regular)	Correct combustion for typical mower compression	Everyday mowing
91 octane (premium)	No added power in this mower; higher cost	Only if 91 is the only fresh E10 fuel available

Why it matters

Octane is mainly about preventing knock in high-compression engines. Most walk-behind mower engines are designed to run correctly on regular fuel, so freshness and ethanol content matter more than buying premium.

Tips to prevent fuel problems

• Buy gas in small amounts so it stays fresh.
• If the mower will sit for weeks, add fuel stabilizer and run the engine briefly to circulate treated fuel.
• At season end, follow the storage steps in the 917372900 owner's manual (many owners run the tank dry before storage).

Last updated: January 2026

The model number for this Craftsman walk-behind lawn mower is 917.372900 (often written without the dot as 917372900). You’ll see it printed on the mower’s model tag and on the cover page of the 917372900 owner’s manual.

Where to find the model number on the mower

Check these common locations on Craftsman walk-behind mowers:

• On the rear of the deck near the discharge opening
• On the top of the deck near the engine mounting area
• On the handle support or rear skirt area
• On a sticker or metal plate labeled “Model No.”

Why the dot matters (917.372900 vs 917372900)

Both formats refer to the same mower; the dot is just a formatting style.

You might see it as	What it means	Use it for
917.372900	Model number with dot	Reading the model tag or manual
917372900	Model number without dot	Parts lookup and ordering

Why it matters

Using the exact model number ensures you get the right Craftsman parts and diagrams for your mower’s deck, blade, and controls. For example, the correct blade and mounting hardware can vary by model; matching the model number helps you select the right lawn mower blade 532406712 and related parts.

Last updated: January 2026