Craftsman 247377440 lawn mower Parts

For the Craftsman 247377440 gas walk-behind mower, we recommend using fresh 87-octane unleaded gasoline for normal operation; moving up to 89 octane is fine but usually does not improve performance unless your engine is knocking or pinging. For fuel and storage details specific to your mower, follow the 247377440 owner's manual.

• Use fresh, clean unleaded gasoline (87 octane is the standard choice).
• Use 89 octane if you hear knocking/pinging under load or in high heat.
• Avoid old gas (more than about 30 days without stabilizer).
• Avoid high-ethanol blends when possible; ethanol attracts moisture and can cause hard starting.
• Do not mix oil into the gas unless your mower is a 2-cycle engine (most walk-behind mowers are 4-cycle).

Try these steps in order:

1. Drain or dilute old fuel with fresh gas.
2. Check the air filter and spark plug condition.
3. If equipped, confirm the choke and throttle controls move freely.
4. If the mower still struggles, follow the lawn mower wont start troubleshooting video fuel ignition and compression.

Using the right fuel helps prevent hard starting, rough running, and carburetor varnish. In small air-cooled engines, fresh fuel and good storage habits typically matter more than stepping up from 87 to 89 octane.

Last updated: February 2026

Common problems on the Craftsman walk-behind mower model 247377440 usually fall into a few buckets: starting issues, poor cut quality, drive (self-propel) problems, and grass handling problems (clumping or blowout). We use the maintenance schedule and adjustments in the 247377440 owner's manual to narrow the cause fast and avoid replacing good parts.

• Won’t start or starts then dies: stale fuel, dirty air filter, fouled spark plug, or carburetor varnish
• Hard to pull starter rope: blade or crankshaft obstruction, seized blade adapter, or debris packed under the deck
• Mower won’t move (self-propel): worn or loose drive belt, stretched drive cable, or transmission wear
• Uneven cut or scalping: dull/bent blade, wrong height setting, or deck packed with wet grass
• Poor bagging or clumping: clogged deck, torn bag, or missing/incorrect rear discharge components

1. Disconnect the spark plug wire and tip the mower safely (air filter side up is typical).
2. Clear packed grass from the underside of the deck and around the blade.
3. Check the drive control for proper tension and cable movement.
4. Inspect the bagging path for tears, gaps, or missing hardware.
5. Confirm fasteners are tight on wheels, handle, and rear discharge area.

Most “big” mower complaints are caused by basic maintenance or a single wear item. Fixing the root cause (fuel quality, blade condition, belt tension, and deck cleanliness) restores starting reliability, improves cut quality, and prevents premature wear on the transmission and wheels.

For step-by-step blade and deck care, we also follow guidance like how to sharpen a lawn mower blade when cut quality is the main complaint.

Last updated: February 2026

The model number for this Craftsman walk-behind lawn mower is 247377440. You’ll use 247377440 to match the correct diagrams, maintenance instructions, and replacement parts (such as wheels, drive components, and bagging parts) for your exact mower.

On most Craftsman walk-behind mowers, the model number is printed on a label or tag on the mower body. Check these common spots:

• Rear of the deck near the discharge opening or rear door
• Top of the deck near the engine mounting area
• Behind the engine, near the recoil starter housing
• On the handle bracket area (near where the handle bolts to the deck)
• Near the rear wheels on the deck housing

For label location details and how the number is formatted, use the 247377440 owner's manual.

Craftsman model numbers that look similar can use different belts, wheels, or control cables. Using the full model number helps prevent ordering the wrong part.

These are common items customers replace on this mower (match by model number first, then part number):

• Lawn & garden equipment belt 954-04260
• Lawn mower drive control cable 946-04655A
• MTD lawn mower wheel 634-05040 or 634-05062 (position can vary)
• Lawn mower grass bag 964-04154

Using the correct model number keeps repairs straightforward and avoids fit issues, especially on drive systems (belt, transmission, control cable) where small design changes can affect compatibility.

Last updated: February 2026

The model number 247377440 does not contain the manufacturing year. For Craftsman walk-behind mowers, the year is typically determined from the engine date code or the product serial number/date label, not from the model number itself. Use the Craftsman 247377440 owner's manual to locate the identification label.

Check these common locations on a Craftsman mower like model 247377440:

• Mower deck: look on top of the deck near the rear discharge area or wheel height adjusters
• Rear of the deck: near the rear skirt area
• Handle support area: around the lower handle mounting points
• Engine shroud: engine model/type and a separate engine date code (varies by engine brand)
• Under the grass bag area: sometimes near the bag opening or frame mounts

Use the table below to avoid mixing up IDs.

Once you locate the serial number or engine code, these steps keep you on track:

• Write down the full string exactly as shown (letters and numbers)
• Look for a date format (often MM/DD/YY, YYMMDD, or a coded format by engine maker)
• If the mower has electric start, check the battery area for additional labels
• Match the engine brand’s code format before assuming month/day order

The correct year helps us match the right parts and diagrams for your Craftsman walk-behind mower, especially for items that change by production run (drive belt routing, wheels, handle hardware, and bagging components).

Last updated: February 2026

On a Craftsman walk-behind mower, the model number is on the mower’s main deck or rear housing on a printed ID label (not on the engine). For your mower, look for the 247377440 label and match it to the parts list in the 247377440 owner's manual.

Check these common label locations first (wipe off grass and dirt so you can read it):

• Top of the mower deck, near the engine mounting area
• Rear of the deck, near the discharge opening or rear door
• Back panel/rear skirt area (behind the bagging door on bagging models)
• Near the height adjuster or wheel bracket area
• On the handle mount area where the lower handle attaches

Many Craftsman mowers have two sets of IDs. Use the right one depending on what you’re replacing.

The mower model number (247377440) ties to the correct Craftsman parts diagrams for items like the drive belt, wheels, and bagging components. Using an engine number for mower parts often leads to mismatched fit and mounting holes.

• Look for a stamped number on the deck lip or rear panel
• Check under the rear door area where labels are protected
• Compare your mower’s features (drive control, bagging setup, wheel size) to the diagrams in the 247377440 owner's manual

Last updated: February 2026