Craftsman 917388104 lawn mower Parts

Common problems we see on the Craftsman walk-behind mower model 917388104 are loss of power, poor or uneven cutting, excessive vibration, a starter rope that’s hard to pull, and bagging issues. These symptoms usually trace back to blade condition, grass buildup under the deck, air-flow or fuel issues, or a worn/loose blade drive connection (blade adapter).

Most common symptoms and what they usually mean

• Loss of power: dirty air filter, mowing too much grass at once, or heavy grass buildup under the deck
• Poor or uneven cut: dull, bent, or loose blade; uneven wheel height settings
• Excessive vibration: worn/bent blade or a bent crankshaft (often after striking a hard object)
• Starter rope hard to pull: blade dragging in grass, brake engaged when the control bar is released, or a damaged blade adapter
• Grass catcher not filling (if equipped): cutting height too low, lift on blade worn, or catcher airflow restricted

For model-specific maintenance and troubleshooting steps (including blade removal safety steps), follow the 917388104 owner’s manual.

Quick checks we recommend before buying parts

1. Disconnect the spark plug wire before working near the blade.
2. Tip the mower on its side with the air filter and carburetor facing up.
3. Clear packed grass from under the deck and around the blade area.
4. Confirm all wheel height adjusters are set evenly.
5. Inspect the blade for bends, cracks, or heavy rounding on the cutting edge.

Parts that commonly solve these problems

If inspection shows wear or damage, these model-matched parts are common fixes:

Symptom	Likely fix	Example model-matched part
Uneven cut or poor cut	Replace a bent/dull blade	Lawn mower blade 532406712
Vibration or blade won’t stay tight	Replace worn blade mounting interface	Blade adapter 532418373
Bagging or discharge issues	Repair/replace chute components	Discharge guard 589482402

Why it matters

A sharp, properly mounted blade and a clean deck reduce engine load, improve cut quality, and help prevent vibration that can damage the crankshaft, blade bolt, and deck components over time.

Last updated: January 2026

The model number for a Craftsman 917388104 lawn mower is 917.388104 (often written without the dot as 917388104). You can confirm it on the model/serial decal on the rear of the mower housing and in the Craftsman 917388104 owner's manual.

Where to find the model number on the mower

We use the model number to match the correct Craftsman parts list, diagrams, and specifications.

• Look for the model/serial decal on the rear of the lawn mower housing
• Record the model number and serial number for future parts ordering
• Match the number exactly; small digit changes can mean different handle, wheel, or deck parts

Common formatting you will see

The same mower model can be shown a few different ways depending on the label or parts diagram.

How it may appear	What it means
917.388104	Standard manual/label format
917388104	Same model number without punctuation
917 388104	Spaced format used on some tags

Why it matters

Using the correct model number helps us point you to the right walk-behind mower parts, such as the correct 21-inch blade, blade adapter, zone control cable, and grass bag. For example, the parts list for this model includes the lawn mower blade 532406712, which is specific to the 917.388104 parts breakdown.

Quick tip for parts matching

• Use the model number first, then verify the part by key number in the diagram
• If you are replacing cutting parts, inspect the blade adapter and mounting hardware at the same time
• Follow the torque and safety guidance in the manual before servicing the blade area

Last updated: January 2026

On Craftsman walk-behind mower model 917388104, the model number and serial number are printed on a decal on the rear of the lawn mower housing. Write both down exactly as shown; we use them to match the correct parts diagrams and specifications in the 917388104 owner's manual.

Where to look on the mower

For this Craftsman mower, start at the rear housing, then check these other common label locations:

• Rear of the mower deck or rear housing panel (primary spot)
• Near the rear discharge door or grass bag opening
• On the handle bracket area close to the deck
• Under the deck (only after the mower is off, cooled, and safely supported)

What to record (and why)

Record every item on the decal so parts and diagrams match your exact build.

• Model number: identifies the mower configuration for parts lookup
• Serial number: helps match production variations
• Date of purchase: useful for maintenance records

Quick ID checklist

Item on decal	What we use it for	Example for this mower
Model number	Selecting the correct parts diagrams	917388104
Serial number	Matching production variations	Unique to your mower
Date of purchase	Maintenance tracking	Your purchase date

Why it matters

Using the correct model number prevents ordering the wrong deck, handle, or discharge components. Once you confirm the model, you can match wear items to the correct diagrams, such as the lawn mower blade 532406712 for this mower.

Last updated: January 2026