Owner’s manual
What model number is the Craftsman 24738909?
The model number for this Craftsman walk-behind gas lawn mower is 247.38909 (often written without the dot as 24738909). You’ll see it printed on the mower’s model label and referenced throughout the parts diagrams in the 24738909 owner’s manual.
Where to find the model number on the mower
Most Craftsman walk-behind mowers place the model label on the deck or rear housing area. Check these common spots:
- On top of the mower deck near the engine
- On the rear discharge area near the rear skirt
- Near the height adjuster area on the deck side
- On the back of the deck behind the engine
- On a label near the handle mounting points
Model number vs. engine model number (common mix-up)
This mower has two different identifiers: the mower model number and the engine model number. Use the mower model number when ordering Craftsman 24738909 parts.
| What you’re identifying | What it looks like | What it’s used for |
|---|---|---|
| Mower model number | 247.38909 (or 24738909) | Deck, wheels, handle, bag, chute, blade adapter, etc. |
| Engine model number | 126T02-0782-B1 | Engine-specific parts like spark plug, air filter, carburetor parts |
Why it matters
Using the correct model number helps us match the right diagrams and parts list for your exact deck and handle configuration, so you avoid ordering a grass bag, side chute, or blade adapter that does not fit.
Quick tip for parts lookup
When you’re shopping parts for this mower, match the part number from the diagram to the part listing. For example, the manual’s parts list shows a grass bag part number 964-04120, which corresponds to our lawn mower grass bag 964-04120.
Last updated: January 2026
What are the most common issues with 24738909?
The most common problems we see on the Craftsman 24738909 walk-behind mower are poor cutting and bagging performance, discharge chute issues, and control/handle wear that affects starting or blade engagement. Many of these symptoms trace back to normal wear parts and simple adjustments listed in the owner's manual.
Common symptoms and what usually causes them
- Uneven cut or poor mulching: dull/bent blade, debris buildup under the deck, or a worn blade adapter
- Clumping or weak bagging: clogged deck, damaged grass bag, or baffle issues
- Side discharge not working well: cracked or sticking chute deflector, weak spring tension
- Handle feels loose or won’t stay set: worn handle knob, loose fasteners
- Control bar issues (hard to hold, doesn’t return smoothly): worn control cable or bail control bar wear
Quick checks we recommend first
- Shut the engine off and let all moving parts stop; disconnect the spark plug wire.
- Tip the mower safely (air filter and carburetor side up) and clear packed grass from the deck.
- Inspect the blade for damage; replace if bent or badly nicked.
- Check the discharge opening and chute for cracks or binding.
- Verify handle hardware is tight and the control cable moves freely.
Parts that commonly solve these problems
| Symptom | Part to inspect/replace | Example from this model’s parts |
|---|---|---|
| Poor bagging | Grass bag | Lawn mower grass bag 964-04120 |
| Poor discharge | Side chute deflector | Mtd lawn mower side chute deflector 731-07486 |
| Uneven cut | Mulching blade | 21-in deck mulching blade 942-0741A |
| Blade won’t drive properly | Blade adapter | Lawn mower blade adapter 748-04096 |
| Control feels sloppy | Control cable | Lawn mower control cable 746-04661 |
Why it matters
A mower that is clogged underneath or running a worn blade makes the engine work harder, cuts unevenly, and leaves clumps. Keeping the deck clean and replacing wear items on time improves cut quality and helps prevent bigger repairs.
Last updated: March 2026
What is the average lifespan of 24738909?
A Craftsman walk-behind mower like model 24738909 typically lasts 8 to 12 years with normal homeowner use and routine maintenance. The engine’s emissions durability guidance in the owner's manual also aligns with about 10 to 12 years for typical annual hours.
What determines lifespan most
- Annual run time: many walk-behind mowers see about 20 to 25 hours per year.
- Maintenance consistency: clean oil, clean air filter, sharp blade, and clean deck.
- Storage: dry storage and fuel management reduce carburetor and corrosion issues.
- Cutting conditions: frequent tall or wet grass loads the engine and blade.
- Wear parts: wheels, cables, and bagging components wear faster than the deck.
Typical lifespan by component
| Component | Typical service life | What usually ends it |
|---|---|---|
| Engine | 8 to 12 years | Fuel system issues, low compression, neglected oil changes |
| Deck and handle | 10+ years | Rust, impact damage, loose hardware |
| Blade and adapter | 1 to 3 seasons | Dulling, bending, hitting rocks/roots |
| Cables and controls | 3 to 7 years | Stretching, fraying, binding |
Maintenance that adds years (and prevents downtime)
- Change engine oil on schedule; check level before mowing.
- Sharpen or replace the blade regularly; a dull blade strains the engine.
- Keep the underside of the deck clean; use the wash port if equipped.
- Use fresh fuel and stabilize fuel for storage; run the engine dry if recommended.
- Inspect controls and hardware; tighten fasteners and replace worn pieces.
Why it matters
Most “mower won’t start” or “poor cut” complaints come from maintenance and wear items, not the deck itself. Staying ahead of blade condition, fuel quality, and cable operation keeps your 24738909 cutting cleanly and reduces costly engine wear.
Last updated: March 2026
