Craftsman 917370431 lawn mower Parts

On the Craftsman walk-behind mower model 917370431, the model number is printed on a decal on the rear of the mower housing (the back of the deck). We recommend writing down both the model and serial number for parts lookup and service. See the 917370431 owner’s manual.

Where to look on model 917370431

Check these common spots on the mower deck and frame:

• Rear of the mower housing (most common on this model)
• Back edge of the deck near the discharge/rear door area
• Side of the deck near the rear wheels
• Near the engine mounting area (sometimes on the frame)

What the label typically includes

The decal usually has more than just the model number.

Label item	What it’s used for
Model number (917370431)	Finding correct diagrams and compatible parts
Serial number	Identifying production run details for service
Date of purchase (your record)	Warranty and maintenance tracking

Why it matters

We use the exact model number to match the correct Craftsman parts and diagrams. Even small model-number differences can change the blade, control cable routing, or drive components.

Quick tip if the decal is hard to read

• Wipe the area with a damp cloth and mild soap
• Use a flashlight at an angle to make faded text easier to see
• Take a close-up photo and zoom in

Last updated: January 2026

For the Craftsman 917370431 walk-behind mower, the most common problems we see are no-start or hard-start conditions (fuel, spark plug, air filter), loss of power or rough running (dirty deck, stale fuel), and poor cut quality or vibration (worn or damaged blade or blade adapter). For model-specific operating and maintenance intervals, use the 917370431 owner’s manual.

Most common issues (and what usually causes them)

• Won’t start / starts then dies: stale fuel, dirty air filter, fouled spark plug, water in fuel
• Loss of power: heavy grass load, clogged deck underside, dirty air filter, oil level too high
• Poor cut or uneven cut: dull/bent blade, deck packed with clippings, wheel heights not matched
• Excessive vibration: loose blade bolt, bent blade, damaged blade adapter
• Hard to push / self-propel slows (power-propelled): debris in drive wheels, worn belt, drive cable issues

Quick checks we recommend for model 917370431

1. Disconnect the spark plug wire before inspecting anything under the deck.
2. Confirm fresh fuel (used within about 30 days) and the tank cap is secure.
3. Check oil level on the dipstick; overfilling can cause smoking and poor running.
4. Inspect the blade and adapter for damage; replace if bent, cracked, or wallowed out.
5. Clean packed grass from the underside of the deck and around the drive cover.

Symptom-to-fix guide

Symptom	Most likely cause	What to do first
Won’t start	stale fuel, dirty air filter, bad spark plug	drain/refill fuel, service air filter, replace plug
Vibrates	blade loose/bent, adapter damaged	tighten hardware, inspect blade/adapter
Poor cut	dull blade, deck buildup	clean deck, replace blade
Self-propel weak	belt wear, drive cable wear	inspect belt path and cable tension

Parts that commonly solve cut and vibration complaints

If your mower is shaking, cutting unevenly, or leaving uncut strips, the fix is often a new blade and a solid blade-to-crank connection:

• Husqvarna lawn mower 22-inch deck 3-in-1 blade 532421825
• Blade adapter 581473301

Why it matters

Small engine mowers like the Craftsman 917370431 are sensitive to fuel quality and airflow. Staying on top of basic maintenance (fresh gas, clean air filter, clean deck, sharp blade) prevents most “sudden” failures and protects the engine and drive system.

Last updated: January 2026

On Craftsman walk-behind mower model 917370431, a “hydrostatic transmission” repair typically does not apply; this model uses a belt-driven self-propelled drive with a gear case (often called a transmission assembly). For drive service details and safety steps, use the 917370431 owner’s manual.

What you can price on this model (917370431)

Because this mower uses a belt and gear case drive, repair cost usually depends on which drive component failed and whether you do it yourself or pay for labor.

• Drive belt related issue: slipping, no forward pull, intermittent drive
• Drive cable related issue: drive control not engaging or not releasing correctly
• Gear case/transmission assembly issue: internal wear, grinding, or no drive even with correct belt tension
• Drive wheel/pawl issue: one or both wheels not grabbing under load

Model-specific parts that commonly affect “won’t move” repairs

These are examples of compatible drive-related parts for model 917370431:

• Lawn mower transmission assembly 589600601 (the gear case/transmission unit used in the self-propelled system)
• Lawn mower drive cable 586638001 (controls engagement of the self-propelled drive)

Cost drivers (what changes the total)

Cost driver	Lower cost when	Higher cost when
Labor time	Easy access, minimal rust	Seized fasteners, extra disassembly, multiple worn parts
Parts replaced	Cable adjustment or single part	Gear case/transmission assembly plus related wear items
Diagnosis	Clear symptom	Intermittent drive or multiple issues (belt, wheels, cable)

Why it matters

If a shop quotes “hydrostatic transmission” work for a walk-behind model like 917370431, confirm they mean the gear case/transmission assembly and related belt/cable components. Using the correct drive type helps you compare quotes accurately.

Last updated: January 2026