Craftsman 917377792 gas walk-behind lawn mower Parts

The model number for this Craftsman gas walk-behind lawn mower is 917.377792 (often written without the dot as 917377792). You’ll find the model number on the mower’s rear housing decal and on the cover of the owner's manual.

Where to find the model number on the mower

Look for a sticker or decal on the rear of the lawn mower housing. We recommend writing down both the model and serial number before ordering parts or starting a repair.

• Check the rear housing decal first (most common location)
• Record the serial number and date of purchase too
• Clean grass and dirt off the rear housing so the decal is readable
• Match the digits exactly; one wrong number can pull the wrong parts list

Model number formats you may see

The same mower model can be shown with or without punctuation.

How it’s shown	What it means
917.377792	Standard manual format
917377792	Same model number without the dot

Why it matters

Using the exact model number 917377792 ensures you get the right Craftsman parts and specs for your mower, including maintenance items like blades, belts, air cleaners, and spark plugs.

Last updated: February 2026

Gas walk-behind mowers like the Craftsman 917377792 are not being phased out everywhere at once; instead, the market is shifting toward battery-electric models and some states and cities are restricting sales or use of certain new gas-powered small engines. Your mower remains serviceable, maintainable, and repairable with standard tune-up parts and safe fuel storage practices in the 917377792 owner's manual.

What “phased out” usually means for owners

Most changes affect new equipment sales and where/when gas equipment can be used, not whether you can keep operating an existing mower.

• Existing gas mowers are typically still allowed to be used and repaired.
• Some areas restrict certain gas equipment for noise or emissions reasons.
• Retailers may stock fewer gas models over time as demand shifts.
• Parts support often continues for years because many components are shared across mower platforms.

How to keep a gas mower reliable as the market changes

If you plan to keep your Craftsman mower, consistent maintenance matters more than trends.

• Use fresh fuel; avoid storing fuel from one season to the next.
• Replace rusty or dirty gas cans to prevent debris and water contamination.
• Store the mower indoors when possible; use a breathable cover (not plastic).
• Never store the mower with gasoline in the tank inside a building where fumes could reach a flame or spark.
• Keep the blade tight and in good condition; a damaged or loose blade can cause poor cutting and vibration.

Quick comparison: gas vs. battery (what typically drives the shift)

Factor	Gas walk-behind mower	Battery walk-behind mower
Startup and refueling	Fuel, oil checks, pull start	Charge and go
Maintenance	More routine service	Less routine service
Runtime	As long as you have fuel	Limited by battery capacity
Storage	Fuel safety considerations	Battery storage considerations

Why it matters

Local rules and product availability can influence what you buy next, but day-to-day reliability for the 917377792 comes down to basics: clean fuel, safe storage, and keeping wear items (like the blade) in good shape. For blade service on this model, the lawn mower blade 532180459 is the correct style listed for the 21-in deck.

Last updated: February 2026

Craftsman model 917377792 is a model number for a 21-inch, 5.5 HP rotary mower; the year is not encoded in the model number itself. To identify the year, we use the mower’s serial number and the date of purchase fields shown in the 917377792 owner's manual.

How to find the serial number (needed to determine the year)

The serial number decal is located on the rear of the lawn mower housing.

• Shut the engine off and let the muffler cool completely.
• Tip the mower only as recommended in the manual (to avoid fuel spills).
• Look for the decal on the rear of the deck housing.
• Write down the serial number exactly as shown.
• If available, also record the date of purchase.

What to record and why

Use this checklist so we can match the correct Craftsman parts and diagrams.

Item to record	Where you’ll find it	What it’s used for
Model number: 917377792	On the mower ID decal	Confirms the correct parts list
Serial number	Same decal (rear housing)	Identifies production run and year
Date of purchase	Your receipt or manual field	Helps narrow the year

Why it matters

Craftsman walk-behind mowers can have mid-year design changes, especially in drive and wheel hardware. Having the serial number helps ensure you get the right items the first time, such as a lawn mower blade 532180459 or drive components.

Quick tip if you are troubleshooting instead of dating the mower

If your main issue is performance (not the year), start with blade condition and basic tune-up checks. Our guide how to tune up a lawn mower video walks through common maintenance steps that often restore cutting and starting performance.

Last updated: February 2026

On Craftsman gas walk-behind mower model 917377792, the model and serial numbers are printed on a decal on the rear of the lawn mower housing. Use the exact model number 917377792 when ordering parts and when checking specs in the 917377792 owner's manual.

Where to find the ID decal on this mower

Check these common spots on the mower housing (deck):

• Rear of the mower housing (most common location for this model)
• Rear edge of the deck near the handle mounting area
• Area above the rear wheels on the deck
• Under grass buildup; wipe the rear housing clean to reveal the decal

What to record (use the official format)

Write the numbers exactly as shown on the decal:

• Model number: 917377792 (this is the official number to use for parts lookups)
• Serial number
• Date of purchase (useful for maintenance and service history)

Quick reference

Item	What it’s used for	Best practice
Model number (917377792)	Matching the correct parts diagrams and parts	Copy every digit exactly; use the full model number
Serial number	Identifying the production run	Keep it with your maintenance notes

Why it matters

Parts such as blades, drive components, and hardware can vary by model and production run. Using the exact model number 917377792 helps ensure you get the right replacement parts the first time.

Last updated: February 2026