Craftsman 917388510 gas walk-behind lawn mower Parts

On the Craftsman gas walk-behind lawn mower model 917388510, the model and serial numbers are printed on a decal on the rear of the mower housing (the back of the deck). Use that model number to match the correct parts list and owner’s manual.

Where to look on model 917388510

Check these spots in order:

• Rear of the mower housing (back of the deck): look for a decal with Model No. and Serial No.
• Near the rear discharge area: decals are often placed close to the opening
• On the deck surface near the wheels: wipe off grass and dirt to reveal the label
• If the decal is worn: copy any remaining digits and compare to the model format shown in the 917388510 owner's manual

Quick ID checklist (so you get the right parts)

Use this table to confirm you are reading the correct label:

What you need	What it looks like	Why it matters
Model number	917.388510 (may appear with a dot)	Identifies the exact Craftsman mower version for diagrams and parts
Serial number	A longer number/letter string	Helps confirm production run and correct fit
Product type	Rotary lawn mower, 21-in rear discharge	Confirms you are on the right parts category

Why it matters

Craftsman walk-behind mowers often share similar decks and handles, but small differences (handle hardware, wheel brackets, blade adapters) change which parts fit. Using the exact model number prevents ordering the wrong fasteners, wheels, or drive components.

If you are replacing a handle fastener

Once you confirm the model number, match the diagram callout to the exact part. Common handle-related hardware for this model includes items like the handle bolt 532191574 (verify location in the diagram before ordering).

Last updated: February 2026

The most common repairs on the Craftsman 917388510 gas walk-behind lawn mower are routine tune-up and wear-item fixes: cleaning or replacing the air filter, replacing the spark plug, addressing stale fuel issues, and servicing the cutting system (blade, blade adapter, and drive belt). For model-specific maintenance intervals and procedures, use the 917388510 owner's manual.

Most common repairs (and what to check first)

• Won’t start or starts then dies: old fuel, dirty air filter, fouled spark plug
• Rough running or surging: stale fuel, restricted air flow, dirty carburetor passages (carburetor is not adjustable)
• Poor cut quality or vibration: dull, bent, or damaged blade; loose blade hardware
• Hard to push or uneven height: wheel wear, axle/bracket issues, debris buildup
• Self-propel won’t pull (if equipped): worn or stretched drive belt

Quick troubleshooting checklist

1. Use fresh gasoline (fuel can go bad quickly in storage).
2. Inspect and service the air filter.
3. Replace the spark plug if it’s fouled or worn.
4. Check the blade for damage and tight mounting.
5. Look for belt wear if the mower won’t move under power.

Blade-related repairs (very common)

The manual calls out blade care as a key maintenance item: keep the blade sharp and replace bent or damaged blades. When removing the blade, disconnect the spark plug wire, tip the mower with the air filter and carburetor facing up, block the blade with wood, then remove the blade bolt counterclockwise.

Symptom	Likely cause	Typical fix
Ragged grass tips	Dull blade	Sharpen or replace blade
Strong vibration	Bent blade or loose hardware	Replace blade, tighten hardware
Blade slips	Worn adapter	Replace blade adapter

Related DIY help: how to sharpen a lawn mower blade.

Why it matters

Most “repairs” on a walk-behind mower are preventive maintenance. Staying on top of fuel quality, air flow, and blade condition improves starting, reduces engine strain, and protects the mower deck and crankshaft.

Last updated: February 2026

The Craftsman walk-behind mower model 917388510 uses a Briggs & Stratton 4-cycle engine; the engine model shown for this mower is 123K02-0281-E1. For the exact engine identification location and maintenance specs, use the 917388510 owner's manual.

How to confirm the engine on your mower

We match the engine by the engine identification label on the blower housing or valve cover, then cross-check it with the engine section in the 917388510 owner's manual.

• Look for a label that lists Briggs & Stratton and the engine model/type/code
• Wipe the label clean; grass and oil can hide characters
• Record the full string (model, type, code), not just horsepower
• Compare what you wrote down to the engine listing in the manual
• Use the engine model when ordering carburetor and ignition parts

Quick reference: mower model vs. engine model

ID you have	What it identifies	Use it to buy
917388510	Mower chassis and controls	Wheels, handle hardware, bag, brackets
123K02-0281-E1	Engine family and configuration	Air filter, spark plug, carburetor parts

Why it matters

Briggs & Stratton parts are selected by the engine model/type/code; using the correct engine ID prevents wrong-part returns and helps you get the right tune-up and fuel system parts the first time.

Last updated: February 2026

The model number for this Craftsman gas walk-behind lawn mower is 917.388510 (often written without the dot as 917388510). You’ll find the model and serial number on a decal on the rear of the mower housing; the 917388510 owner's manual also lists the model on the cover.

Where to find the model number on the mower

Look for a model/serial decal on the rear of the mower housing (near the deck). On Craftsman walk-behind mowers, it’s typically easy to see once you tip the handle forward and look at the back of the deck.

• Check the rear of the deck/housing, not the engine shroud
• Wipe off grass and dirt; the decal can be hard to read when dirty
• Record both the model and serial number for parts lookup
• Use the exact characters shown (dots and spaces may be omitted online)

Model number formats you may see

These are the same mower model; the formatting just varies by label, manual, or parts site.

Where you see it	Example	What it means
Owner’s manual cover	917.388510	Standard printed format
Parts lookup / search	917388510	Same model without punctuation
Mower decal	917.388510	Used for service and parts identification

Why it matters for parts and repairs

Using the correct model number ensures you get the right diagrams and parts for your exact deck and handle setup (for example, the correct handle hardware and brackets).

Common model-matched parts customers replace include:

• Handle bolt 532191574 (handle mounting hardware)
• Handle knob 532185577 (handle adjustment/locking)
• Lawn mower wheel 532400542 (wheel wear or damage)

Last updated: February 2026

The Craftsman walk-behind mower model 917388510 does not have its year built encoded in the model number. To find the year, we use the mower’s serial number from the decal on the rear of the mower housing and match it to the date-of-purchase information in the 917388510 owner's manual.

Where to find the serial number (and why it matters)

The manual notes that the model and serial numbers are on a decal on the rear of the lawn mower housing. That serial number is what identifies the production run and helps confirm the correct parts and specifications.

• Look at the rear of the mower deck/housing for the decal.
• Write down the serial number exactly as shown.
• Record the date of purchase if you still have it.
• Use the serial number when ordering common wear items like blades and hardware.
• If the decal is damaged, check for a second label near the handle brackets.

Quick check: model number vs. serial number

Identifier	What it tells you	Where it’s used
Model number (917388510)	The mower design family and parts breakdown	Parts diagrams, manual, compatibility
Serial number (from decal)	The production run and manufacturing date details	Dating the unit, confirming revisions

Common mix-up we see

Some online videos describe a 6-digit date code (MMDDYY) on certain Craftsman products. That format is not a reliable way to date model 917388510 because the manual points you to the serial number decal for identification.

Why the year matters

Knowing the correct year helps avoid ordering the wrong version of a part when a mower has mid-production changes. It also helps when you are matching deck hardware and handle components such as the handle bolt 532191574.

Last updated: February 2026