Craftsman 917388125 lawn mower Parts

Common problems we see on Craftsman walk-behind mowers like model 917388125 are loss of power, poor or uneven cutting, excessive vibration, a starter rope that’s hard to pull, and bagging issues. Most of these trace back to blade condition, grass buildup under the deck, or basic engine maintenance outlined in the owner's manual.

Most common symptoms and what usually causes them

• Loss of power: dirty air filter, cutting too much grass, or grass and debris packed under the mower deck
• Poor or uneven cut: dull, bent, or loose blade; uneven wheel height settings; deck buildup
• Excessive vibration: worn/bent blade, loose blade hardware, or a damaged blade adapter
• Starter rope hard to pull: blade dragging in grass, brake engaged when the control bar is released, or internal engine issues
• Grass catcher not filling (if equipped): cutting height too low, worn blade lift, or restricted airflow

Quick checks we recommend first (safe, fast, and high-impact)

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. Inspect the blade for bends, cracks, or heavy rounding; replace if damaged.
5. Confirm the blade bolt is tight and the blade adapter is not cracked.

Parts that commonly solve cutting and vibration problems

Symptom	Most likely wear item	Example part for this model
Uneven cut, ragged grass tips	Blade	Lawn mower 21-in deck mulching blade 532406706
Vibration, blade won’t stay tight	Blade adapter	Blade adapter 532418373
Poor discharge or unsafe opening	Discharge guard/door parts	Discharge guard 589482402

Why it matters

A dull or damaged blade and grass buildup under the deck can overload the engine, reduce cut quality, and increase vibration. Keeping the blade sharp and the underside clean helps the mower cut efficiently and protects key components.

Last updated: January 2026

The model number for this Craftsman walk-behind mower is 917.388125 (often written without the dot as 917388125). You’ll see it printed on the mower’s model label and on the cover of the 917388125 owner's manual.

Where to find the model number on the mower

Check these common locations on Craftsman walk-behind mowers like model 917388125:

• On the rear of the deck near the discharge opening
• On the top of the deck near the engine mounting area
• Near the handle brackets or height adjuster area
• On a sticker or metal tag that also lists serial information

Why the dot matters (917.388125 vs 917388125)

Both formats refer to the same mower; the dot is just a formatting style used in some manuals and parts lists.

You might see it as	What it means	When it’s used
917.388125	Same model number	Owner’s manuals and diagrams
917388125	Same model number	Parts lookup and online search

Related identifiers you may also see

Your mower can also be described by other identifiers that are not the Sears model number. For example, the engine has its own model number.

• Mower (Sears/Craftsman) model number: 917.388125
• Engine family: Briggs & Stratton 650 Series (as shown in the manual)
• Engine model number shown in the manual: 124T02-3847-B2

Why it matters

Using the exact mower model number helps us match the correct parts (like a blade, wheel assembly, or zone control cable) and ensures diagrams and maintenance steps line up with your specific Craftsman configuration.

Last updated: January 2026

The model number for this Craftsman walk-behind mower is 917.388125 (often written without the dot as 917388125). You can confirm it on the product identification label and in the 917388125 owner's manual.

Where to find the model number on the mower

We recommend checking these common locations on Craftsman walk-behind mowers:

• On the rear of the deck near the discharge opening
• On the top of the deck near the engine mounting area
• On a label near the handle brackets
• In the paperwork that came with the mower (manual and parts list)

Why the dot matters (917.388125 vs 917388125)

Both formats refer to the same mower; the dot is a formatting style used in many Craftsman manuals.

You might see it as	What it means	When it’s used
917.388125	Same model number	Common in printed manuals and diagrams
917388125	Same model number	Common on parts sites and model lookups

Why it matters

Using the exact model number helps us match the correct parts and diagrams for your mower, especially for items like the blade, zone control cable, and handle hardware.

• Helps prevent ordering the wrong blade or deck parts
• Ensures diagrams match your exact handle and height adjuster setup
• Speeds up troubleshooting and maintenance lookups

Last updated: January 2026

On the Craftsman lawn mower model 917388125, the model and serial numbers are printed on a decal on the rear of the lawn mower housing (the back of the mower deck). Use the model number to match the correct parts list and the serial number for service and warranty records; see the 917388125 owner's manual.

Where to look on the mower

Check these common spots on walk-behind mowers like model 917388125:

• Rear of the mower housing (back of the deck); this is the primary location
• Top of the deck near the engine mounting area
• Near the rear wheels on the deck edge
• On the handle support area (less common)

What you should write down

Record both numbers exactly as shown on the decal.

Item on decal	What it’s used for	Example format
Model number	Identifies the exact mower version for parts diagrams	917.388125 (often shown with a dot)
Serial number	Identifies your specific unit for records and service	Letters and numbers
Date of purchase	Helps with maintenance and ownership records	Month/day/year

Why it matters

We use the model number to ensure you get the right Craftsman walk-behind mower parts (blade, blade adapter, discharge components, handle parts) that match your exact deck and engine setup. The serial number helps distinguish production runs when small design changes occur.

Last updated: January 2026