Craftsman 917388720 gas walk-behind lawn mower Parts

On the Craftsman gas walk-behind lawn mower model 917388720, the model number is printed on the mower’s identification sticker on the back of the mower deck, typically between the lower handle mounts. Use that exact number when ordering parts or checking diagrams in the 917388720 owner's manual.

Check these common spots on walk-behind mower decks (starting with the most likely):

• Back of the deck, between the lower handle mounts (most common)
• Rear discharge area near the flap or discharge guard
• Side of the deck near the rear wheel height adjuster
• Under the grass bag mounting area (if equipped)
• Near the engine base on the deck (less common)

Record the full ID information exactly as shown on the sticker.

• Model number: identifies the correct parts list (example: 917388720)
• Serial number: helps match production changes and revisions
• Engine model (if listed): useful for engine-specific parts like air filters and recoil starter parts

Craftsman walk-behind mowers often have similar-looking decks and handles across multiple models. Using the exact model number prevents ordering the wrong blade adapter, control cable, or discharge components.

Use this checklist to avoid common mix-ups:

• Clean the sticker area with a damp rag so all digits are readable
• Match every digit (no missing zeros)
• Confirm you are using the mower deck model number (not a bag or engine number)
• Cross-check the model number against the parts diagrams in the 917388720 owner's manual

Last updated: January 2026

For the Craftsman 917388720 gas walk-behind lawn mower, we recommend using fresh 87-octane (regular) gasoline; it provides the performance the engine is designed for. Using 91-octane does not add power or reliability in this mower, so it is usually unnecessary.

• Use fresh, clean 87-octane unleaded gasoline.
• Avoid stale fuel; old gas is a common no-start cause.
• Avoid fuel contaminated with water or dirt.
• Use the correct oil level before starting; this mower ships without oil or gasoline.
• Store fuel properly so it does not degrade between mowings.

Octane is mainly about preventing knock in higher-compression engines. Most walk-behind mower engines are designed to run correctly on regular fuel, so the bigger reliability factor is fuel freshness and cleanliness, not premium octane.

The troubleshooting chart for this model lists fuel and maintenance items that commonly stop starting:

• Check for out-of-fuel, stale fuel, or water in fuel
• Inspect the air filter for dirt buildup
• Confirm the spark plug wire is connected
• Replace the spark plug if it is worn (the manual calls for a .030-inch gap)

For model-specific operating and fuel handling guidance, follow the 917388720 owner's manual. For storage tips that help prevent stale fuel problems, use our how to keep lawn mower gas from going bad guide.

Last updated: January 2026

The model number is 917388720. On this Craftsman gas walk-behind lawn mower, the model is printed on the mower’s identification label and is also shown on the cover of the 917388720 owner's manual.

We recommend checking these common locations first (wipe off grass and dirt so the label is readable):

• 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 support or rear frame area
• On a sticker or metal tag that also lists safety and compliance information

This mower’s equipment model number is 917388720, but the engine can have its own separate model number.

Using the correct model number helps us match the right parts the first time, especially for fit-critical items like the blade drive belt, control cable, wheels, and deck hardware.

• Use 917388720 for mower chassis parts (deck, handle, wheels, discharge components)
• Use the engine model number for engine parts (air cleaner cartridge, recoil starter parts, carburetor kits)
• If your mower needs a common maintenance refresh, a kit like the briggs & statton tune-up kit 5140B can be a good starting point when it matches your engine family

Last updated: January 2026

Gas walk-behind mowers like the Craftsman 917388720 are not being “phased out” everywhere at once; changes happen city-by-city and state-by-state, and most restrictions focus on new sales or commercial use rather than forcing you to stop using an existing mower. For safe operation and maintenance details, use the 917388720 owner's manual.

Rules vary, but these patterns are common:

• Some areas restrict new sales of certain gasoline-powered outdoor equipment.
• Some areas set rules for government fleets or commercial landscaping first.
• Many places still allow continued use of existing gas mowers.
• Enforcement and timelines differ widely; local ordinances matter most.
• Even where electric is encouraged, gas mower parts and service remain available for years.

Check requirements in this order:

• Your city or county (local noise and emissions ordinances)
• Your state regulations
• If you run a business: commercial landscaping rules and contract requirements
• Retailer policies if you are planning to buy a new mower

Good maintenance reduces starting issues, power loss, and premature wear. Our manual guidance for this mower includes key safety steps like stopping the engine and disconnecting the spark plug wire before service, plus cleaning grass buildup under the deck. Use these practical habits:

• Keep the underside of the deck scraped clean (grass buildup reduces performance)
• Avoid spraying water into the engine area; cover the air filter and carburetor if cleaning
• Store fuel safely; avoid stale fuel and keep the mower covered with a breathable cover
• Replace worn cutting components promptly (a loose blade or worn adapter can cause vibration)

If your area tightens rules on new gas mower sales, keeping your Craftsman 917388720 running well can extend its useful life and help you avoid a rushed replacement decision.

Last updated: January 2026