SCITOO Electric PTO Clutch 717-1709 Electric PTO Lawn Mower Clutch Compatible for Cub Cadet, for MTD

What It Is

The SCITOO Electric PTO Clutch 717-1709 engages and disengages the mower blades on lawn tractors and zero-turn mowers. It’s a direct aftermarket replacement for OEM part 717-1709, designed for Cub Cadet and MTD models with a 12V electrical system.

Fitment & Compatibility

Before buying, verify these three things:

• OEM part number: Must match 717-1709 (also listed as 917-1709 on some MTD units). Cross-check your old clutch’s stamped number.
• Shaft size: This clutch fits a 1-inch diameter crankshaft with a 3/16-inch keyway. Measure your shaft to confirm.
• Mounting pattern: Three-bolt pattern with 3.5-inch bolt circle. Check bolt spacing on your mower deck.
• Deck size: Compatible with 42–54 inch decks on Cub Cadet LT/LTX/GT series and MTD Yard Machines. Not for push mowers or zero-turns with odd bolt patterns.
• Electrical: Single 12V DC power wire with a 2-pin connector. Ensure your mower’s harness matches (most Cub Cadet/MTD models from 2000–2015 do).

Key Things to Know

• Installation difficulty: Moderate. Requires removing the mower deck or belt, then unbolting the old clutch. You’ll need a puller tool if the clutch is seized to the shaft.
• Quality variance: SCITOO is an aftermarket brand. Expect shorter lifespan than OEM (2–4 seasons vs 5–7 seasons for genuine Cub Cadet). Some users report noise after 1 year.
• Wiring gotcha: The 2-pin connector may be reversed polarity on certain MTD models. If the clutch doesn’t engage, swap the two wires.
• Belt alignment: After installation, check that the pulley groove aligns with the belt path. Misalignment causes rapid belt wear or slippage.

Should You Buy It

Buy it if you need a budget-friendly fix for a worn-out clutch on a Cub Cadet or MTD lawn tractor and you’re comfortable with basic mechanical work. It’s a solid value for older machines (over 8 years old) where OEM cost ($150+) isn’t justified. Skip it if you want OEM reliability for a newer mower or need a clutch for a zero-turn with a different bolt pattern.