Craftsman 917370910 lawn mower Parts

For a Craftsman walk-behind mower, we find the model number on the mower’s deck or frame, typically on a sticker or metal tag near the rear wheels or height-adjustment area. For your mower, the model number format is 917.370910 (often shown as 917370910).

Check these common tag locations first:

• On top of the mower deck, near the engine mounting area
• On the rear of the deck, behind the engine
• On the side of the deck near a rear wheel
• On the frame near the height adjuster or handle brackets
• Near the grass bag opening or discharge chute area

If the label is dirty or faded, wipe it with a damp rag and a little mild cleaner so the digits are readable.

Record the model number and any additional identifiers you see (such as a product number or serial number). The model number is what we use to match the correct Craftsman parts diagrams and maintenance instructions.

Craftsman walk-behind mowers can look similar across multiple years, but parts like the blade, drive belt, and control cable can differ by model. Using 917370910 helps ensure the replacement part fits and the repair steps match your mower.

For model-specific identification details and diagrams, use the 917370910 owner's manual.

Last updated: February 2026

The Craftsman walk-behind mower model 917370910 uses a 22-inch cutting deck (often listed as a 22-inch “Multi-Cut” deck). For the exact configuration and cutting system details for your mower, use the 917370910 owner's manual.

On model 917370910, the deck size is tied to the blade and cutting path. In the parts list for this mower, the blade is specified as 22 inches, which matches the mower’s cutting deck size.

• Model family: Craftsman rotary walk-behind mower
• Cutting width: 22 in
• Common deck description: 22-inch multi-cut (mulch, bag, side discharge)
• Matching replacement blade example: husqvarna lawn mower 22-inch deck 3-in-1 blade 532421825

Most walk-behind mowers use a blade length that closely matches the cutting width.

Deck size affects cut time, maneuverability, and which parts fit. Using the correct 22-inch blade and hardware helps prevent vibration, poor cut quality, and damage to the blade adapter or crankshaft.

• Disconnect the spark plug wire before working near the blade.
• Measure the blade tip to tip, not the deck shell.
• Replace damaged blade hardware (for example, a worn lock nut) when needed.
• If the mower vibrates after a blade change, recheck blade orientation and mounting.

Last updated: February 2026

Common problems we see on the Craftsman 917370910 walk-behind mower include no-start conditions (stale fuel, dirty air filter, bad spark plug, loose blade/adapter), loss of power from grass buildup under the deck, excessive vibration from a worn or bent blade, and drive issues related to the belt or transmission.

• Won’t start: stale fuel, water in fuel, dirty air filter, spark plug wire off, bad spark plug, control bar not held to the handle
• Loss of power or stalling: heavy grass load, dirty air filter, too much oil, debris packed under the mower deck
• Poor cut or uneven cut: worn or bent blade, uneven wheel height settings, deck packed with clippings
• Excessive vibration: loose blade bolt, damaged blade adapter, bent blade, bent crankshaft
• Hard to push or self-propel slows: drive belt wear, wheel/drive hardware wear, transmission problems

1. Drain old gas and refill with fresh gasoline (stale fuel is a top cause of no-start).
2. Check the control bar operation and make sure it is held firmly against the handle while starting.
3. Inspect the underside of the deck for packed grass and clean it out (with the spark plug wire disconnected).
4. Inspect the blade for bends, heavy nicks, or looseness; replace if damaged.
5. If self-propelled performance drops, inspect the drive belt for glazing, cracking, or stretching.

• We do not recommend adjusting engine speed or tampering with the governor; it is factory set.
• The carburetor on this mower is not adjustable; persistent running issues point to cleaning/service or replacement.
• Use OEM replacement parts to maintain safe operation and proper fit.

Most “common problems” trace back to fuel quality, airflow (air filter), blade condition, and deck cleanliness. Fixing those first restores starting, cutting performance, and reduces vibration that can damage the crankshaft and drive system.

For model-specific maintenance steps and the troubleshooting chart, use the owner's manual.

Last updated: February 2026

For the Craftsman walk-behind mower model 917370910, use SAE 30 engine oil when outdoor temperatures are above 32°F, and SAE 5W-30 when temperatures are below 32°F. The engine oil capacity is 20 ounces, so fill to the dipstick mark to avoid overfilling.

Use the viscosity that matches the temperature you mow in:

• Above 32°F: SAE 30
• Below 32°F: SAE 5W-30
• Oil capacity: 20 oz
• Fill level: to the dipstick “full” mark (not the top of the filler neck)

For the exact oil-checking steps and maintenance intervals, follow the 917370910 owner's manual.

• Park the mower on a level surface and shut the engine off.
• Let the engine cool before checking or draining oil.
• Check oil with the dipstick; add a little at a time and recheck.
• Change oil on the schedule in the manual; change more often in dusty conditions.
• Wipe up spills right away to reduce smoke and debris buildup.

Using the correct oil viscosity for the temperature protects the engine from excess wear and helps it start and run consistently, especially during early-season cold mowing.

Last updated: February 2026