Runleader HM011F digital tachometer & engine hour meter 2-pack — programmable service reminder, RPM display

Runleader's 2-piece HM011F digital module records engine hours and RPM while offering a programmable service reminder for small engines.

Designed for lawn mowers, generators, pressure washers and other small gasoline engines, this two-pack of Runleader HM011F units combines an hour meter, countdown maintenance timer and tachometer in a compact housing. The modules keep a visible running-time total when the engine is off, measure engine speed during operation, and sound a clear visual prompt when pre-set service intervals arrive. Each unit is standalone, battery-backed and intended for simple mounting and wiring on a variety of ignition systems.

How does this device keep track of total engine runtime?

The Runleader HM011F continuously accumulates operating hours and displays the total on its screen even when the engine is not running. The hour reading records to one-tenth of an hour and can be reset when needed, making it useful for refurbishing or tracking a fresh service interval after repairs.

• Visible total run-time display when engine is off
• 0.1-hour resolution for precise logging
• Option to reset accumulated hours as required
• Internal battery retains data during power interruptions

Can the HM011F remind me when maintenance is due?

Yes — each module includes a programmable service countdown that alerts you when a preset interval has elapsed. The display shows the remaining time, and when it reaches the programmed limit a service warning icon flashes so you’ll know maintenance is required.

• Settable service interval countdown (SVC)
• Flashing warning indicator when service time arrives
• Countdown visible on-screen for easy monitoring
• Useful for scheduled oil, spark plug, or tune-up reminders

How does the tachometer function help tune engine performance?

The tachometer function measures engine RPM while running and provides a live readout to help adjust idle speeds or diagnose irregular operation. The HM011F supports programming for different ignition types so it can accurately interpret pulses from a wide range of small motors.

• Real-time RPM display to aid idle adjustment
• Programmable ignition-mode settings for compatibility
• Useful for detecting inconsistent or abnormal engine speed
• Helps ensure engines run within recommended RPM ranges

What should I expect for installation, battery life, and durability?

Installation is straightforward with the included instructions; the unit connects to the ignition pulse and mounts near the engine. Each meter uses a replaceable CR2450 battery and preserves recorded data when the cell is changed. A power-off mode prevents accidental button presses, and Runleader backs the product with a two-year warranty.

• Supplied with clear installation directions for quick setup
• Replaceable CR2450 battery with data retention during swaps
• Button lock/power-off option to avoid accidental resets
• Two-year limited warranty for peace of mind

Who this is for: The 2-piece Runleader HM011F package suits homeowners, landscapers, fleet managers and DIY mechanics who service multiple small engines and want a dependable, compact way to log hours, get maintenance reminders and read engine speed. If you need simple installation, clear runtime visibility, and the ability to track scheduled service across two machines, this two-pack offers an economical and practical solution without complex wiring or external power requirements.