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How to find Craftsman model number?
On a Craftsman walk-behind mower like model 917375920, the model number is typically printed on a sticker or tag on the mower deck, most often on the rear of the deck near the lower handle mounts. Confirm the exact location and format in the 917375920 owner's manual.
Where to look on the mower
Check these common spots on walk-behind mower decks:
- Back of the deck, between the lower handle mounts
- Rear skirt area (the back edge of the deck)
- Side of the deck near a rear wheel
- Under the grass bag or behind the discharge door (if equipped)
- Top of the deck near the engine mounting area
Tips for reading the tag
If the label is dirty or faded, these steps usually help:
- Wipe the area with a damp rag; avoid soaking the label
- Use a flashlight at a low angle to make faint printing easier to see
- Take a close-up photo and zoom in to read small characters
- Write the number down exactly as shown (include all digits)
Model number vs. serial number
Use this quick guide so you capture the right information:
| What you need | What it’s used for | What it looks like |
|---|---|---|
| Model number | Finding correct parts diagrams and fit | Usually 8 to 12 characters (often all numbers on mowers) |
| Serial number | Identifying production run details | Often longer; may include letters and numbers |
Why it matters
The model number is the fastest way to match the correct Craftsman parts for your mower (blade, wheels, drive components, and deck hardware). Even small model changes can affect which parts fit.
Last updated: January 2026
Should I use 87 or 91 gas for lawn mower?
For the Craftsman lawn mower model 917375920, we recommend using 87-octane (regular) unleaded gasoline for normal operation. Higher octane (like 91) does not add power in small mower engines; using fresh, clean fuel and the right oil level matters more. See the fuel guidance in the 917375920 owner's manual.
What to use (and what to avoid)
- Use: Fresh 87-octane unleaded gasoline
- Avoid: Old gas (more than about 30 days without stabilizer)
- Avoid: Gas contaminated with water or debris
- Avoid: Overfilling the tank (leave room for expansion)
- Avoid: Storing fuel in the mower over the off-season
Why 91 octane usually is not better
Octane is mainly about resistance to knock, not “strength.” Most walk-behind mower engines are designed to run correctly on regular fuel, so premium fuel typically provides no performance benefit.
| Fuel choice | What you get | Best use case |
|---|---|---|
| 87 octane (regular) | Correct combustion for most mowers | Everyday mowing |
| 91 octane (premium) | Higher knock resistance | Only if the engine specifically calls for it |
Fuel tips that prevent hard starting and rough running
If your 917375920 starts hard, surges, or stalls, fuel quality is often the cause. We use these best practices:
- Buy gas in small quantities so it stays fresh
- Add fuel stabilizer if fuel will sit
- Run the engine dry or treat fuel before storage
- Keep the gas cap area clean to reduce tank contamination
Related DIY help
Why it matters
Using the right fuel helps protect the carburetor jets, reduces varnish buildup, and improves starting reliability, especially after storage.
Last updated: January 2026
What model number is the Craftsman 917375920?
The model number for this Craftsman walk-behind lawn mower is 917375920. You’ll use 917375920 to match the correct parts diagrams, maintenance specs, and replacement parts for your mower; it’s the key identifier for ordering the right components.
Where to find the model number on the mower
We typically see the model number on the mower’s ID label. Check these common spots:
- Rear of the deck near the discharge opening
- Top of the deck near the engine mounting area
- On the handle support or rear frame area
- Near the height adjuster hardware
- On a sticker/plate that also lists engine information
For label location details and model-specific maintenance guidance, use the 917375920 owner's manual.
Why the model number matters when buying parts
Many Craftsman mowers look similar, but parts can vary by model and production run. Using 917375920 helps ensure the right fit for items like:
- Blade and blade mounting hardware
- Discharge chute and mulching components
- Wheels, dust covers, and height adjusters
- Drive system parts (self-propel components)
- Grass bag and frame assemblies
Quick examples from common wear items
| Part type | What it affects | Example part for this model |
|---|---|---|
| Blade | Cut quality, vibration | Lawn mower blade 580244002 |
| Clipping deflector | Discharge safety and direction | Lawn mower clipping deflector 532426129 |
| Wheel dust cover | Wheel protection, debris control | Lawn mower wheel dust cover 581840401 |
Why it matters
Using the exact model number prevents ordering the wrong blade, drive parts, or discharge hardware; that saves time and avoids installation issues caused by small design differences.
Last updated: January 2026
What are the common problems with Craftsman lawn mowers?
Common problems we see on Craftsman walk-behind mowers like model 917375920 include hard starting or stalling, poor cut quality, excessive vibration, and self-propel drive issues. Most of these trace back to fuel quality, blade/deck condition, or worn drive components; routine maintenance prevents many failures.
Most common symptoms and what they usually mean
- Won’t start / starts then dies: stale gas, dirty carburetor, fouled spark plug, clogged air filter
- Rough running / surging: restricted fuel flow, dirty carburetor jets, vacuum leak
- Uneven cut / clumping: dull or bent blade, deck packed with wet grass, cutting too low
- Vibration: blade damage, loose blade hardware, debris wrapped around the blade adapter
- Won’t move (self-propelled): worn drive pawls, stretched/broken drive cable, transmission wear
Quick checks we recommend first (fast, high-impact)
- Disconnect the spark plug wire before touching the blade or working under the deck.
- Drain old fuel and refill with fresh gas (use fuel stabilizer if it sits).
- Inspect the blade for bends, cracks, and dull edges; replace if damaged.
- Clean packed grass from the underside of the deck after mowing.
- Check wheels and drive engagement; worn pawls or a slipping cable can stop propulsion.
Parts that commonly get replaced on this model
| Problem area | What you’ll notice | Example part for 917375920 |
|---|---|---|
| Blade/cutting | ragged cut, vibration | Lawn mower blade 580244002 |
| Drive/wheels | mower won’t pull itself | Drive pawl 532404845 |
| Discharge/bagging | chute won’t close, poor bagging | Lawn mower clipping deflector 532426129 |
Why it matters
Ignoring early symptoms can turn a simple tune-up into bigger repairs. For example, mowing with a bent blade can damage the crankshaft, and running old fuel can clog the carburetor and cause repeated no-start problems.
Helpful DIY guides
- 917375920 manual
- How to sharpen a lawn mower blade
- Lawn mower wont move troubleshooting video motion drive failure
Last updated: January 2026
