Craftsman 247378150 lawn mower Parts

On the Craftsman model 247378150 walk-behind mower, the most common repairs are routine tune-up items (fresh fuel, spark plug, air filter), blade service (sharpening or replacement), and self-propel fixes (clearing debris, correcting belt routing, or replacing a worn drive belt). See the 247378150 owner's manual for the maintenance schedule and safety steps.

Common repairs we see most often

• Fuel-related no-start: old gas, dirty carburetor passages, or storage without stabilizer
• Ignition tune-up: spark plug service (per the engine manual)
• Airflow restriction: dirty air cleaner (per the engine manual)
• Cut quality issues: dull, loose, or bent blade; blade adapter problems
• Self-propel problems: debris in the drive area, drive control adjustment, or a worn belt
• Vibration after impact: damage after striking a foreign object (inspect before using again)

Quick troubleshooting map

Symptom	Most likely cause	What we recommend first
Won’t start	Stale fuel, spark plug, air filter	Drain/replace fuel; check plug and air filter
Excessive vibration	Loose/unbalanced blade, bent blade	Stop engine; inspect blade and tighten hardware
Won’t self-propel	Debris, belt issue, control out of adjustment	Clean drive area; inspect belt routing and wear
Poor mulching	Wet/high grass, dull blade	Mow dry grass; raise cut height; sharpen blade

Parts that commonly get replaced

If the mower will not self-propel and the belt is worn or damaged, replacing the drive belt is a standard fix. For this model, a common replacement is the lawn mower ground drive belt, 3/8 x 31-1/4-in 954-04282.

Safety steps before any repair (important)

• Stop the engine and wait for all moving parts to stop
• Disconnect the spark plug wire and ground it against the engine to prevent accidental starting
• Wear gloves when handling the blade; mower blades are sharp
• After hitting an object, inspect for damage and repair before operating

Why it matters

Most “repairs” on a gas walk-behind mower are really maintenance. Keeping fuel fresh, the blade sharp, and the drive system clean prevents hard starting, poor cut quality, and premature wear on the belt, transmission, and deck.

Last updated: February 2026

Craftsman lawn mowers are sold under the Craftsman brand (owned by Stanley Black & Decker). For Craftsman walk-behind mower model 247378150, the mower platform and many replacement parts are sourced through MTD Products (now part of Stanley Black & Decker), which is why you will see many MTD-labeled components in the parts list and diagrams.

What you will see for model 247378150

On this model, it is normal for parts and descriptions to reference MTD because MTD is the OEM behind many Craftsman walk-behind mower designs.

• Craftsman is the brand name on the mower
• Stanley Black & Decker owns the Craftsman brand
• MTD Products is the manufacturer/OEM commonly tied to this mower platform
• Many replacement parts for 247378150 are listed as MTD parts (chutes, belts, hardware)
• The best confirmation is the ID tag and the documentation for your exact unit

Quick way to confirm on your mower

Use the mower ID tag and the documentation to match the exact model and any OEM identifiers.

• Check the ID tag on the deck or rear housing for model and serial information
• Match the model number exactly to 247378150
• Look for an MTD-style product code or format on the tag (common on Craftsman walk-behind mowers)
• Use the parts diagrams to confirm the deck and drive configuration
• Keep the safety and operating details handy in the 247378150 operator’s manual

Brand vs. manufacturer (why the names differ)

Label you see	What it means	Why it matters for parts
Craftsman	Brand on the mower	Helps identify the product line
Stanley Black & Decker	Brand owner	Corporate ownership, support channels
MTD Products	OEM/manufacturer	Explains why many parts are MTD-labeled

Why it matters

Knowing the OEM helps you match the correct deck, drive system, and hardware so you order parts that fit your 247378150 mower the first time.

Last updated: February 2026

The model number for this Craftsman walk-behind mower is 247378150. You will typically find it on the mower’s model tag (often on the rear of the deck housing or near the handle mounting area); match that tag to the 247378150 operator’s manual to confirm you have the correct parts and diagrams.

Where to find the model number on the mower

Look for a sticker or metal tag and copy the number exactly.

• Check the rear of the 21-inch deck housing (near the back flap area)
• Check the left or right side of the deck near the wheel height adjuster
• Check the handle bracket area where the lower handle bolts to the deck
• Wipe off grass and dirt; the tag is often hard to read when dirty
• Record the full model number and any serial number shown

Why the exact model number matters

Craftsman 21-inch mowers often share similar frames, but parts like the drive belt, discharge components, and handle hardware can vary by model series and production run. Using 247378150 helps us match the correct diagrams for items like the blade adapter, transmission, and deck components.

Common “model family” look-alikes (how to avoid mix-ups)

The operator’s manual for this mower family lists multiple related model series (for example, 247.37815* where the last digit can vary). Your mower’s tag should still match 247378150 for this parts list.

What you see	What it means	What to do
247378150	Exact model number	Use this model to select parts
247.37815*	Model family/series format	Match the last digit on your tag
Different 917- or other number	Different Craftsman platform	Use the number on your tag instead

Helpful part examples for this model

If you are confirming you are on the right parts list, these are examples of parts shown for model 247378150:

• Lawn mower ground drive belt, 3/8 x 31-1/4-in 954-04282 (self-propel drive)
• Lawn mower blade adapter 687-02220 (connects blade to crankshaft)
• Mtd lawn mower side chute deflector 731-07486 (side discharge)

Why it matters

A single digit difference in the model number can change belt length, handle hardware, or discharge door style; matching the model tag prevents ordering the wrong Craftsman or MTD-compatible part.

Last updated: February 2026

Craftsman model 247378150 is a model number, not a date code; it does not directly tell the year. For this mower family, the most reliable way to confirm the build date is to match your exact model and serial information using the 247378150 operator’s manual and the ID tag on the mower.

How to find the year on your mower

On Craftsman walk-behind mowers, the year is typically tied to the serial number/date code on the product ID label, not the model number.

• Look for the ID label on the rear of the deck, near the rear discharge area, or on the handle mounting area
• Write down the serial number exactly as shown (letters and numbers)
• Compare your mower’s configuration (21-inch deck, controls, bagging and mulching setup) to the diagrams and descriptions in the manual
• If your label includes a date code, use the code format shown on the label (formats vary by production run)
• If the label is damaged, use the parts list and diagrams to confirm the exact variant of 247.37815* that matches your mower

Why online “month-day-year” decoding often causes confusion

Many videos and posts describe a 6-digit month/day/year pattern, but that pattern applies only to certain label formats and product lines. For 247.378150, the manual shows it belongs to a 21-inch mower model family (247.37815)*, so the year is best confirmed from the mower’s ID label and manual match, not from the model number alone.

Quick reference: model number vs. serial/date code

Item	What it tells you	Where to find it
Model number (247378150)	Parts compatibility and model family	ID label; also shown in documentation
Serial number/date code	Manufacturing date or production run	ID label on mower deck/handle area

Why it matters

Getting the correct year and variant helps us match the right Craftsman and MTD parts (like a drive belt, wheel, or chute) so the fit, mounting holes, and deck style line up correctly.

Last updated: February 2026

On a Craftsman walk-behind mower like model 247378150, the model number is on the mower’s identification label (model tag) attached to the deck or frame. The most common spot is near the rear wheel area or on the back of the deck near the grass bag opening.

Where to look first on model 247378150

Check these areas in order; they are the most common tag locations on Craftsman 21-inch walk-behind mowers:

• Either side of the deck near the rear wheels
• Rear of the deck behind the grass bag area (rear discharge opening)
• Side of the deck near the discharge chute opening
• Handle mounting area where the lower handle bolts to the deck
• Top of the deck near the engine mounting area (the tag is on the mower, not the engine)

For model identification details and general mower information, use the 247378150 owner’s manual.

What to write down from the tag

Copy the numbers exactly as shown so parts diagrams and service information match your mower.

• Model number (example format: 247.37815X or 247378150)
• Serial number
• Product name/description (21-inch mower, self-propelled, etc.)
• Any manufacturing date code (if listed)

Label item	Example	What it’s used for
Model number	247378150	Matching the correct Craftsman parts diagrams
Serial number	Varies	Identifying your specific unit for service
Engine numbers	Varies by engine	Finding engine-specific parts (spark plug, air filter)

Why it matters

The model number is the fastest way to get the right Craftsman parts for the deck, drive system, wheels, and hardware. It prevents ordering the wrong part when similar mower versions use different components.

If the label is dirty or faded

• Wipe the area with mild soap and water; dry completely
• Use a flashlight at an angle to make faint printing easier to see
• Take a close-up photo and zoom in to read worn characters

Last updated: February 2026