Craftsman 917377522 rotary lawn mower Parts

For the Craftsman mower model 917377522, we recommend using fresh regular unleaded gasoline (87 octane); higher octane (like 91) does not add power or improve normal operation in small mower engines. For fuel handling and storage safety, follow the 917377522 owner's manual.

• Use: Fresh, clean 87 octane unleaded gasoline.
• Avoid: Old or stale fuel; the manual lists stale fuel and water in fuel as common no-start causes.
• Avoid: Storing fuel in the mower between seasons; the manual advises not storing gasoline from one season to another.
• Avoid: Rusty fuel cans; rust and dirt can contaminate fuel and cause problems.

• Fill with fresh gas from a clean container.
• If the mower has been sitting, drain old fuel and refill with fresh gasoline.
• If you suspect water contamination, drain the tank and carburetor and refill.
• Keep the engine area clean; built-up grass and debris can make the engine run hotter.

Using fresh, clean fuel matters more than octane. The manual’s troubleshooting guidance ties hard starting and no-start conditions directly to stale fuel and water in fuel, so keeping fuel fresh and the fuel container clean prevents the most common fuel-related problems.

Last updated: January 2026

For the Craftsman 917377522 rotary lawn mower, the most common issues are no-start or hard-start, poor cut quality, weak self-propel drive, and uneven cutting height. These problems usually trace to routine wear items (blade, belt, wheels) or basic engine tune-up needs; use the 917377522 owner's manual for model-specific checks and adjustments.

• Won’t start / starts then stalls: old fuel, dirty air filter, fouled spark plug, or carburetor varnish
• Rough running / surging: restricted fuel flow, dirty carburetor, governor linkage out of adjustment
• Poor cut quality (ragged grass, missed strips): dull/bent blade, blade installed incorrectly, deck packed with wet grass
• Self-propel won’t pull or slips: worn or stretched drive belt, debris in drive area, worn drive gears
• Uneven cut height: height adjuster not set evenly side-to-side, wheel wear, bent components

• Drain old gas and refill with fresh fuel; stabilize fuel if it will sit.
• Inspect and clean under the deck (disconnect the spark plug wire first).
• Check the blade for damage and tight mounting; replace if bent.
• Verify all four wheels are set to the same height setting.
• If self-propel is weak, inspect the belt and drive area for wear and grass buildup.

If you’re seeing the symptoms above, these model-matched parts are frequent solutions:

A worn blade and slipping drive belt make the mower work harder, which increases vibration, reduces cut quality, and can shorten the life of the engine and drive components. Keeping up with basic tune-up and deck cleaning prevents most repeat failures.

Last updated: March 2026

A “Craftsman 6.75” label usually refers to the engine rating, not a single mower model number. For the mower on this page, the model number is 917.377522 (often written as 917377522) and it’s a Craftsman 22-inch rear-discharge rotary lawn mower; confirm on the ID tag and in the 917377522 owner’s manual.

We recommend matching the model number from the mower’s ID label to the manual and parts diagrams.

• Check the model/serial label on the mower deck (top or rear area)
• Look near the rear discharge door or bagging area
• Check the handle support area for a sticker or stamped tag
• Match the number format: 917.XXXXXX or 917XXXXXX

Using the correct model number prevents ordering the wrong blade, belt, or drive components. For example, this model uses parts like the lawn mower mulching blade 532406713 and the belt 532157769, which can vary by deck and drive system even when the engine rating looks similar.

• Use the full model number, including the decimal if shown (917.377522)
• If your mower says 6.75 but the model differs, use your exact model for parts
• Cross-check the deck size (commonly 21 to 22 inches on many Craftsman walk-behind mowers)

Last updated: January 2026