Owner’s manual
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Should I use 87 or 91 gas for lawn mower?
For the Craftsman 247370101 gas walk-behind mower, we recommend using 87-octane (regular) unleaded gasoline for normal operation. Using 91-octane does not add power or improve mowing performance; the best results come from fresh fuel and correct maintenance per the 247370101 owner's manual.
- Use 87 octane unleaded gasoline for everyday mowing.
- Use fresh gas; old fuel is a top cause of hard starting and rough running.
- Avoid fuel that has been sitting in a can for weeks; buy only what you will use soon.
- Avoid overfilling the tank; leave room for expansion.
- If you notice surging or stalling, check fuel freshness first before replacing parts.
| Fuel choice | Best for | What you will notice |
|---|---|---|
| 87 octane (regular) | Normal mowing, best overall choice | Reliable starting and normal power |
| 91 octane (premium) | Not needed for this mower | Typically no performance change |
Use these steps to reduce carburetor and starting issues:
- Empty or stabilize fuel before storage.
- Run the engine a few minutes after adding stabilized fuel.
- Keep the gas can sealed and stored in a cool, dry place.
- Clean grass buildup from the deck so the engine is not overloaded.
- If the mower will not start after sitting, address fuel quality before sharpening or replacing the blade.
A helpful reference for storage practices is how to keep lawn mower gas from going bad.
Octane is mainly about preventing knock in high-compression engines. Most walk-behind mower engines are designed to run correctly on regular fuel; using premium usually just costs more, while fresh, clean fuel and routine tune-up habits do the real work.
Last updated: January 2026
What are the most common issues with 247370101?
The most common problems we see on the Craftsman 247370101 gas walk-behind mower are poor cutting and discharge, control or safety cable issues, and deck or wheel wear that affects height and tracking. Use the 247370101 owner's manual to confirm adjustments, safety checks, and the correct setup for your mower.
- Uneven cut or scalping: cutting height set unevenly, worn height adjuster hardware, bent blade, or a blade adapter that is slipping.
- Clumping or poor side discharge: clogged deck, damaged chute/deflector, or mulching plug installed when you want side discharge.
- Mower will not keep running when you release the handle: normal safety shutoff; if it stalls immediately even when held, the zone control cable may be out of adjustment or damaged.
- Vibration: damaged blade, loose fasteners, or a worn blade adapter.
- Hard to push or tracks poorly: worn wheels, axle wear, or debris wrapped around wheel areas.
These are frequent replacement items for the 247370101 when symptoms match:
- Mtd lawn mower zone control cable 946-04661A (engine stop and operator presence control)
- Craftsman troybilt lawn mower 21-in deck mulching blade 942-0741A (cut quality and vibration)
- Mtd lawn mower blade adapter 748-0376E (blade mounting, vibration, slipping)
- Lawn mower discharge chute assembly 931-04486A or mtd lawn mower side chute deflector 731-07486 (discharge direction and safety)
- Lawn mower wheel 634-04625 (rolling and height consistency)
- Disconnect the spark plug wire before working near the blade.
- Tip the mower with the air filter and carburetor side up to reduce fuel and oil leakage.
- Clean packed grass from the deck and chute area.
- Verify the cutting height is set the same on all wheels.
- Inspect the blade for bends, cracks, and heavy nicks; replace if damaged.
| Symptom | Most likely area | Example part on this model |
|---|---|---|
| Uneven cut, vibration | Blade and mounting | 942-0741A, 748-0376E |
| Poor discharge | Chute/deflector, deck buildup | 931-04486A, 731-07486 |
| Engine stops when control is held | Control cable adjustment/wear | 946-04661A |
| Hard to push | Wheels/axles | 634-04625 |
Addressing these issues early protects the deck housing, improves cut quality, and helps the engine and blade system run smoother with less vibration and stress.
Last updated: March 2026
What model number is the Craftsman 247370101?
The model number is 247370101. On this Craftsman walk-behind gas mower, you’ll typically find that exact model number on the mower’s ID label; matching it exactly helps ensure you get the right parts list and the correct replacement parts.
Check the mower’s identification label first; it’s usually placed where it stays readable but protected.
- Look on the rear of the deck housing near the discharge area
- Check the top of the deck near the engine mounting area
- Look around the rear skirt area
- If your mower has a bagger, check near the bag opening and frame
- Wipe off grass and dirt; the label is often hidden by buildup
For label location details and how Craftsman formats the ID tag, use the 247370101 owner’s manual.
Many walk-behind mowers have multiple numbers; only one is the mower’s model number.
| What you’re reading | What it identifies | Use it for |
|---|---|---|
| Mower model number (247370101) | The mower and its parts breakdown | Ordering wheels, cables, deck parts, handles |
| Engine model/type/code | The engine itself | Engine-specific parts like carburetor or ignition |
| Serial number | Your exact unit’s production run | Warranty and exact production variations |
Using the exact model number 247370101 prevents wrong-part returns and helps you match key fit items like the blade adapter, discharge chute, and control cable.
If you’re replacing a common wear item, match by model first, then confirm by part number; for example, the mtd lawn mower blade adapter 748-0376E is a fit-critical part that must match your deck and blade mounting.
Last updated: January 2026
