Craftsman 917370934 lawn mower Parts

For the Craftsman lawn mower model 917370934, use 87-octane (regular) unleaded gas for normal operation. Higher octane (such as 91) does not add power or improve reliability in a typical small mower engine; fresh fuel and correct maintenance matter more. See the fuel guidance in the 917370934 owner's manual.

What to use (and what to avoid)

• Use fresh 87-octane unleaded from a busy station.
• Use clean, approved fuel containers to prevent water and dirt contamination.
• Avoid old gas (stale fuel is a top cause of hard starting and rough running).
• Avoid high-ethanol blends when possible; ethanol attracts moisture during storage.
• Do not mix octane grades expecting “cleaning”; octane rating is mainly about knock resistance.

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

Fuel choice	Best use	What you will notice
87 octane (regular)	Everyday mowing	Normal starting and power when fuel is fresh
91 octane (premium)	Not needed for most mower engines	Typically no performance gain

If you are having starting or running problems

Fuel quality issues often look like ignition or carburetor problems. Before replacing parts, we recommend these checks:

• Drain and replace old fuel; refill with fresh 87.
• Check the air filter and spark plug condition.
• Inspect for fuel leaks and cracked fuel lines.
• If the engine surges or stalls, clean the carburetor and verify choke operation.

If the mower is hard to pull-start or the rope sticks, follow lawn mower pull cord stuck for safe checks.

Why it matters

Using the correct fuel helps prevent hard starting, surging, and varnish buildup in the carburetor during storage. For long-term reliability, fuel freshness and proper seasonal storage are more important than premium octane.

Last updated: January 2026

For a Craftsman walk-behind mower like model 917370934, the model number does not contain the build year; you’ll use the serial number and the product ID label to determine the manufacturing date. We recommend confirming the exact serial-number format for your mower in the 917370934 owner's manual.

Where to find the serial number

On most Craftsman walk-behind mowers, the serial number is on a sticker or metal tag in one of these spots:

• Rear of the deck near the discharge opening
• Top of the deck near the engine mounting area
• Behind the engine, near the recoil starter housing
• On the rear frame area near the handle brackets
• Near the height-adjuster area by a rear wheel

How Craftsman serial numbers are commonly formatted

Craftsman serial numbers are not all identical across years and manufacturers, but many use a date-coded pattern. A common format is a 6-digit date code that reads as:

• MM = month
• DD = day
• YY = year

Example

Serial number date code	Interprets as	Build date
072811	MM/DD/YY	July 28, 2011

Quick checks to avoid a wrong year

Before you lock in the year, we use these checks:

• Make sure you’re reading the serial number, not the model number (917370934).
• Look for letters before or after the digits; those can change how the code is read.
• If the label shows a “DOM” or “Date” field, use that first.
• If the mower has been re-decked or re-engined, the engine date may not match the mower’s original build date.

Why it matters

The build year helps us match the correct parts and diagrams for your mower, especially for wear items like the blade, drive belt, and control cables.

If you’re servicing the cutting system while you’re identifying the mower, the husqvarna lawn mower 22-inch deck 3-in-1 blade 532421825 is a common replacement blade listed for this model.

Last updated: January 2026

The model number for this Craftsman walk-behind gas lawn mower is 917370934. You will typically find the model number on the mower’s model tag (often on the rear of the deck, near the height adjuster area, or on the handle support). For model-specific identification details, use the 917370934 owner's manual.

Where to find the model number on the mower

Look for a sticker or metal tag and check these common locations:

• Rear of the cutting deck (behind the engine)
• Left or right side of the deck near the wheels
• Handle bracket area where the handle bolts to the deck
• Under the rear discharge door or near the bagging opening
• Near the engine mounting area (on the deck surface)

What to write down (so you get the right parts)

For Craftsman mowers, we recommend recording these items exactly as shown:

• Model number: 917370934
• Product number (if listed)
• Engine model and type (on the engine label)
• Serial number (if present)

Quick ID checklist

Item	What it’s used for	Where it’s found
Mower model number (917370934)	Deck, wheels, drive parts, controls	Mower model tag
Engine model/type	Spark plug, air filter, carb parts	Engine label
Serial number	Manufacturing run details	Model tag (if included)

Why it matters

Parts fit is driven by the exact model number. Using 917370934 helps match the correct walk-behind mower parts such as a blade, drive belt, wheel, or zone control cable without guesswork.

Last updated: January 2026