Owner’s manual
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Are gas lawn mowers being phased out?
Gas walk-behind mowers like the Craftsman 917387390 are not being phased out everywhere at once; the shift is happening gradually as some states and cities restrict sales or use of new gas-powered outdoor equipment, while many areas still allow them. Your mower remains serviceable and supportable with routine maintenance and replacement parts.
What to expect over the next few years
Regulations and retailer inventory changes tend to affect new mower sales first, not the ability to keep an existing mower running.
- Some regions are limiting or ending sales of certain new gas-powered lawn equipment.
- Many homeowners are switching to battery-electric for lower noise and less routine engine maintenance.
- Gas mowers remain common for larger yards, heavy grass, and longer run times.
- Parts availability usually continues for years because wear items (blades, wheels, cables) are routinely replaced.
- Proper storage and fuel practices matter more as equipment ages.
How to keep your Craftsman 917387390 running reliably
Use the maintenance and safety steps in the 917387390 owner’s manual. Key basics include starting with the correct setup and keeping the cutting system in good condition.
- Add oil and gasoline before first use (these mowers ship without oil or gas).
- Keep the blade sharp; replace bent or damaged blades.
- Disconnect the spark plug wire before blade service.
- Tip the mower with the air filter and carburetor facing up when removing the blade.
- Avoid storing old fuel from season to season; stale fuel is a common no-start cause.
Common wear parts you can still replace
| What you’re fixing | Typical symptom | Example part for this model |
|---|---|---|
| Blade | Poor cut, tearing grass, vibration | Lawn mower blade 532406713 |
| Blade mounting | Blade loosens, wobble, damage at hub | Lawn mower blade adapter 532418373 |
| Operator control | Engine stops when you release bar, cable issues | Walk-behind lawn mower engine cable 532176556 |
Why it matters
Even if your area starts favoring electric mowers, keeping a gas mower like the Craftsman 917387390 maintained protects cut quality, reduces starting problems (often fuel-related), and extends the life of high-wear components such as the blade and blade adapter.
Last updated: January 2026
How long can gas sit in a gas can for a lawn mower?
For a Craftsman lawn mower like model 917387390, regular unleaded gasoline typically starts going stale after about 30 days in a gas can; with a quality fuel stabilizer mixed in, stored fuel is typically usable for up to 6 to 12 months. For best results, follow the fuel and storage guidance in the 917387390 owner's manual.
Recommended storage times (practical rule)
- 0 to 30 days: Use as normal (fresh fuel starts easiest).
- 1 to 3 months: Use only if it was stored tightly sealed; expect harder starting.
- Up to 6 to 12 months: Use if a fuel stabilizer was added when the gas was fresh.
- Over 12 months: Drain and replace with fresh fuel.
What to do if the gas is old
Old fuel is a common cause of a mower that “does not start” due to stale fuel, which is listed in the troubleshooting guidance for this mower.
- Drain the can safely and refill with fresh gasoline.
- If old fuel is already in the mower, empty the tank and refill.
- Prime and start per the normal cold-start procedure.
- If it still will not start, check basic tune-up items (air filter, spark plug, oil level).
Quick reference table
| Fuel situation | What you will notice | What we recommend |
|---|---|---|
| Fresh gas (under 30 days) | Normal starting and power | Keep using it |
| Stale gas (over 30 days, no stabilizer) | Hard starting, surging, poor power | Replace with fresh gas |
| Stabilized gas | Starts closer to normal | Use within 6 to 12 months |
Why it matters
Stale gasoline can cause hard starting, rough running, and fuel-system deposits. The manual also advises not storing gasoline from one season to another and to keep the fuel supply clean to prevent rust or dirt from causing problems.
Last updated: January 2026
Where is Craftsman's model number?
On the Craftsman walk-behind mower model 917387390, the mower’s model and serial number are printed on a decal on the rear of the lawn mower housing. Use that decal when ordering parts or checking specifications in the 917387390 owner's manual.
How to find it quickly
- Turn the mower off and let the engine cool completely.
- Stand behind the mower at the handle.
- Look at the rear of the mower deck/housing for a model/serial decal.
- Wipe off grass, dust, and oil film so the numbers are readable.
- Write down both the model number and serial number before you shop for parts.
Model number vs. engine model number (common mix-up)
Your mower has a mower model number and a separate engine model number. For parts, we match the part to the correct number.
| What you are identifying | Where it’s found | What it’s used for |
|---|---|---|
| Mower model number (917387390) | Rear housing decal | Deck, handle, wheels, blade, controls |
| Engine model number (example shown in manual: 123K02-0258-E1) | On the engine (varies by engine) | Carburetor, ignition, recoil starter, engine gaskets |
Why it matters
Using the rear-housing decal number helps us match the correct Craftsman 917387390 parts list. That prevents ordering a blade, cable, or hardware that looks similar but does not fit.
Last updated: January 2026
