Mr Mower Parts Starter Solenoid Compatible with Ariens Gravely 04781700 Fits Zoom IKON ZTX ZT XL Zero Turn Mowers 12V

What It Is

This is a 12V starter solenoid (relay) that sends battery power to the starter motor when you turn the key. It’s designed for zero-turn mowers, specifically Ariens and Gravely models with OEM part 04781700, and is a direct replacement for a failed solenoid.

Fitment & Compatibility

Before buying, confirm your mower’s model number and that it uses the 04781700 solenoid. This fits Ariens Zoom, IKON, ZTX, ZT, and XL series zero-turns, plus Gravely ZT, ZTX, and XL models. Check the original solenoid’s terminal layout: two large terminals (battery and starter) and two small terminals (ground and trigger). Measure mounting hole spacing—typically 2.5 inches center-to-center. If your mower uses a different OEM number (e.g., 539131713 or 586447001), verify physical dimensions and amperage rating (this is rated for 12V, 50A continuous, 100A intermittent). Avoid assuming fit based on brand alone—cross-check your mower’s serial number or deck size (e.g., 42”, 48”, 60”) to rule out variations.

Key Things to Know

• Quality: Aftermarket part at a budget price. Some users report shorter lifespan than OEM, but most say it works fine for residential use.
• Installation difficulty: Easy for DIYers—disconnect battery negative, remove two mounting screws, swap wires (label them first), and reconnect. Takes 15-30 minutes.
• Common gotchas: If the solenoid clicks but the starter doesn’t spin, check for a dead battery or corroded connections. If it doesn’t click, test the small trigger wire with a multimeter (should see 12V when key is turned).
• Warranty: Usually 30-day return window from the seller—test promptly to avoid being stuck with a dud.

Should You Buy It

If you have an Ariens or Gravely zero-turn with a failed 04781700 solenoid and want a low-cost fix for light-to-moderate use, this is a solid choice. However, for commercial mowers used daily, consider an OEM solenoid for better reliability and longer warranty support.