Craftsman 917377380 rotary lawn mower Parts

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.

Where to look on the mower

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

What the label usually includes

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

Tips to read a worn or dirty sticker

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

Why it matters

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

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.

What to use (and what to avoid)

• 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).

Quick comparison: 87 vs 91

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

Why it matters

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.

Fueling and safety reminders from the manual

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.

Helpful DIY resources

• If you are dealing with old fuel or starting trouble, use how to keep lawn mower gas from going bad.

Last updated: January 2026

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.

Most common wear items (and what they affect)

• 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

Quick symptom-to-part guide

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

Why these parts get replaced most

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.

Tips to order the right part the first time

• 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