Husqvarna 594919101 Hour Meter Service Reminder Gauge

What It Is

The Husqvarna 594919101 is an OEM hour meter and service reminder gauge that tracks engine runtime and alerts you when scheduled maintenance (oil change, filter service) is due. Designed for ride-on mowers, zero-turn models, and tractors, it helps you stick to service intervals without guessing.

Fitment & Compatibility

• Brand fit: Works with most Husqvarna, Poulan Pro, and Jonsered ride-on mowers, zero-turn mowers, and lawn tractors built after 2010. Also compatible with many AYP (American Yard Products) platforms.
• OEM vs aftermarket: This is genuine Husqvarna OEM—direct swap for the original gauge. No adapter or wiring harness needed if replacing a failed unit.
• Mounting: Fits a standard 2‑inch (50.8 mm) round panel cutout. Check your dash hole diameter before buying—some older models use a 1.75‑inch hole.
• Wiring: Uses a single wire that wraps around the spark plug wire (inductive pickup). No battery connection required. Verify your mower has a spark plug wire accessible.
• Not compatible with: Push mowers, battery-powered mowers, or commercial zero-turn models with digital CAN-bus displays.

Key Things to Know

• Installation difficulty: Easy—5 minutes. Wrap the inductive wire around the spark plug wire, mount the gauge in the dash hole, and secure with the included nut.
• Service reminder logic: The gauge tracks hours and flashes a service icon at preset intervals (default: 50 hours for oil, 100 hours for filter). It resets automatically after you perform maintenance and press the reset button.
• Battery life: The internal lithium battery lasts 3–5 years. When the display dims or goes blank, the entire gauge must be replaced—battery is not user-replaceable.
• Common gotcha: The inductive pickup wire must be wrapped close to the spark plug boot (within 2–3 inches) for accurate reading. Wrapping too far down the wire can cause erratic hour tracking.

Should You Buy It

If you own a compatible Husqvarna or AYP ride-on mower and want a simple, reliable way to track engine hours and service reminders without wiring into your mower’s electrical system, this is a solid, direct-replacement choice. It’s best for DIY owners who prefer OEM fit and forget the guesswork on oil changes—just avoid it if your mower uses a digital dashboard or you need a user-replaceable battery.