Owner’s manual
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Are gas lawn mowers being phased out?
Gas walk-behind mowers like the Craftsman 917376521 are not being phased out everywhere at once; the shift is happening gradually as some states and cities restrict new sales of certain gas-powered outdoor equipment, while many areas still allow gas mowers and support parts and service. For safe operation and maintenance, follow the Craftsman 917376521 owner’s manual.
What “phased out” usually means
Most changes focus on new equipment sales in specific locations, not on taking existing mowers out of service.
- Existing gas mowers are typically still legal to own and use.
- Restrictions, when they happen, often apply to new retail sales (not repairs).
- Parts support continues because owners still maintain equipment for years.
- Commercial and heavy-duty use often transitions more slowly than residential use.
- Local rules can differ by state, county, and city.
What to do if you plan to keep your 917376521
Keeping a gas mower reliable is mostly about fuel care, blade condition, and drive system upkeep.
- Use fresh fuel and avoid storing old gas in the tank for long periods.
- Keep the air filter and spark plug in good condition.
- Clean grass buildup around the deck and drive areas.
- If the self-propelled wheels bind, clean the drive wheel area; the manual outlines removing hubcaps, locknuts, and washers.
- Replace worn hardware during service, such as the lock nut 532409149 when needed.
Quick comparison: gas vs electric (typical homeowner tradeoffs)
| Factor | Gas walk-behind mower | Electric walk-behind mower |
|---|---|---|
| Maintenance | Fuel, oil, spark plug, air filter | Battery care, blade care |
| Runtime | As long as you refuel | Limited by battery/cord |
| Noise/odor | Higher | Lower |
| Repairs | Many serviceable parts | Often more modular |
Why it matters
If your area tightens rules on new gas mower sales, maintaining your current Craftsman mower becomes even more valuable. Routine upkeep also improves starting, cutting performance, and drive engagement.
Last updated: January 2026
What model number is the Craftsman 917376521?
The model number for this Craftsman walk-behind gas lawn mower is 917.376521 (often written without the dot as 917376521). You’ll see it printed on the mower’s model label and on the cover page of the 917376521 owner's manual.
Where to confirm the model number on the mower
We recommend checking the mower’s model label first, then matching it to the manual.
- Look on the mower deck near the rear discharge area
- Check around the rear wheel height-adjuster area
- Look near the handle mounting brackets
- Match the number format: 917.376521 vs 917376521 (same model)
Why you might see different numbers online
Some listings show a “marketing model” name (like M210) or additional identifiers. For parts and diagrams, the 917.376521 / 917376521 model number is the one that matters.
| You might see | What it usually means | What to use for parts |
|---|---|---|
| 917.376521 | Craftsman model number as printed in the manual | Use this |
| 917376521 | Same model number without punctuation | Use this |
| M210 (or similar) | Retail/series name used in some listings | Use 917.376521 |
Why it matters
Using the exact model number helps us match the correct parts list and diagrams for your mower, including drive components like the lawn mower drive control cable 532194653 and cutting components like the husqvarna lawn mower 21-in deck 3-in-1 blade 532189028.
Last updated: January 2026
What is the average lifespan of 917376521?
A Craftsman walk-behind mower like model 917376521 typically lasts 8 to 12 years with normal residential use and routine maintenance (oil changes, blade care, and belt/cable adjustments). Heavy use, poor storage, and skipped maintenance shorten that lifespan.
What affects lifespan the most
- Engine maintenance: clean oil, clean air filter, fresh fuel
- Deck and drive care: keep the underside clean; avoid mowing heavy wet grass
- Wear parts: blade, drive belt, and control cables wear out first
- Storage: dry storage and fuel stabilization during off-season
- Operating habits: not hitting roots, rocks, curbs, or running the deck too low
Typical lifespan by major system
| System | Typical service life | What you do to reach it |
|---|---|---|
| Engine | 8 to 12 years | Regular oil changes; clean cooling fins; fresh fuel |
| Self-propel drive | 5 to 10 years | Keep belt tension correct; replace worn belt/cable |
| Deck and handle | 8 to 12 years | Clean after mowing; touch up rust; tighten hardware |
Parts that commonly extend mower life
If the mower still starts and runs well but the self-propel or cut quality is slipping, replacing common wear parts usually restores performance:
- Lawn mower ground drive belt, 3/8 x 32-1/2-in 532175436 (restores self-propel drive)
- Lawn mower engine control cable 532183567 (helps maintain proper engine control)
- Husqvarna lawn mower 21-in deck 3-in-1 blade 532189028 (improves cut quality)
Why it matters
Knowing the expected lifespan helps you decide whether to maintain and repair (often cost-effective for belts, blades, and cables) or plan for replacement if the engine or deck is severely worn.
For the maintenance schedule and adjustment procedures specific to 917376521, use the owner's manual.
Last updated: March 2026
