Owner’s manual
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How to find Craftsman model number?
On the Craftsman walk-behind mower model 917377380, the model number is typically printed on a sticker on the back of the mower deck, usually between the lower handle mounts. Once you find it, match it exactly when ordering parts or looking up diagrams in the 917377380 owner's manual.
Check these common label locations first:
- Back of the deck (rear-facing side), between the lower handle mounts
- Rear discharge area near the deck opening (if equipped)
- Top of the deck near the engine mounting area (less common)
- Side of the deck near a wheel height adjuster bracket
Most Craftsman mower ID stickers include more than just the model number.
| Label item | What it’s used for |
|---|---|
| Model number | Selecting the correct parts diagrams and parts list |
| Serial number | Identifying production run details for the same model |
| Engine model | Finding engine-specific parts like carburetor or recoil starter |
A faded sticker is common on walk-behind mowers. These steps usually make it readable:
- Brush off dry grass and dirt first
- Wipe with a damp rag and mild soap, then dry
- Use a flashlight at a low angle to highlight embossed printing
- Take a close-up photo and zoom in to read small characters
Craftsman mower parts can look similar across different deck and drive setups. Using the exact model number helps ensure you get the right items (for example, a correct-fit blade like the lawn mower blade 532406713 or drive components).
Last updated: January 2026
Should I use 87 or 91 gas for lawn mower?
For the Craftsman rotary lawn mower model 917377380, use 87-octane (regular) unleaded gas for normal operation. Higher octane (like 91) does not add power or improve reliability in a typical small mower engine; it is mainly used for engines designed for it.
- Use fresh 87-octane unleaded from a busy station.
- Use clean, approved gas cans to prevent dirt and water contamination.
- Avoid old gas (stale fuel is a top cause of hard starting).
- Avoid overfilling; the manual advises checking the fuel tank before starting and cleaning up spills.
- Let the engine cool before refueling (important safety step).
| Fuel choice | Best for | What you will notice in a mower | Our recommendation |
|---|---|---|---|
| 87 octane (regular) | Most walk-behind mowers | Normal starting and cutting | Use this |
| 91 octane (premium) | High-compression engines designed for it | Usually no benefit | Skip unless your engine label/manual specifies it |
Using the right fuel helps your mower start easier, run smoother, and reduces carburetor and fuel-system issues. Fuel quality and freshness matter more than octane for most Craftsman walk-behind mowers.
The 917377380 owner's manual emphasizes safe fueling practices. Follow these basics every time:
- Refuel outdoors only.
- Do not refuel with the engine running or hot.
- Allow the engine to cool for several minutes before filling.
- Wipe up spilled gasoline before starting.
- If you are dealing with old fuel or starting trouble, use how to keep lawn mower gas from going bad.
Last updated: January 2026
What replacement parts are most commonly needed for the 917377380?
For the Craftsman 917377380 rotary lawn mower, the most commonly replaced parts are the cutting and drive-wear items: the blade and blade-mounting pieces, the self-propel drive belt and drive components, and wheel/height-adjust hardware. Use the diagrams in the owner's manual to match your exact configuration.
- Lawn mower blade 532406713: cutting quality, vibration, and grass discharge
- Lawn mower blade adapter 581547901: blade fit on the crankshaft, wobble, and uneven cut
- Belt 532157769: self-propel drive slipping or no drive
- Drive control 532184588: drive engagement issues at the handle
- Lawn mower wheel 532150341: traction, wobble, and uneven deck height
- Husqvarna lawn mower height adjuster knob 532701037: cutting height setting and adjuster hold
| Symptom | Most likely parts to check | Typical fix |
|---|---|---|
| Poor cut, torn grass, vibration | Blade, blade adapter | Replace blade; inspect/replace adapter |
| Self-propel won’t move or slips | Belt, drive control | Refit/replace belt; adjust/replace control |
| Uneven cut height side-to-side | Wheel, height adjuster knob | Replace worn wheel/knob; verify settings |
These parts take the most abuse: the blade hits debris, the blade adapter can wear and loosen, and the drive belt and drive hardware wear from constant tension and pulley contact. Wheels and height adjusters wear from curb impacts and repeated adjustments.
- Confirm the model number is 917377380 on the mower’s ID label.
- Use the manual diagrams to identify the correct section (handle, drive, deck, wheels).
- Replace blade-related parts as a set when you see wobble or repeated loosening.
- After installing a new blade, check for smooth rotation and proper torque.
Last updated: March 2026
