CarBole Digital Hour Meter Tachometer for Small Engines — Compact Battery-Powered RPM Gauge, 20,000 RPM Range

The CarBole Digital Hour Meter Tachometer is a compact, battery-powered RPM counter and runtime tracker designed to monitor small gas engines up to 20,000 RPM and log service intervals up to 99,999 hours.

Keep precise records of engine hours and real-time RPM without tapping into the vehicle's electrical system. This lightweight gauge runs on a single CR2450 lithium battery and installs quickly on lawn mowers, generators, snowmobiles, dirt bikes, boats, and other gas-powered equipment. It combines an easy-to-read LCD display with programmable maintenance reminders so you can plan oil changes and inspections based on actual use.

How does this tachometer track engine hours and RPM?

The CarBole unit measures RPM electronically and accumulates elapsed runtime in 0.1-minute increments, storing totals up to 99,999 hours. It displays current engine speed and maintains an hour counter even when the engine is off, so service history stays intact between uses.

• RPM range: up to 20,000 RPM with approximately ±10 RPM resolution
• Hour logging accurate to 0.1 minute, capacity 99,999 hours
• Non-volatile memory retains hours without external power
• Single CR2450 battery powers the device for long-term use

How do I install and power the CarBole hour meter?

Installation is straightforward: mount the compact module where it’s visible and route the pickup or wire according to the supplied instructions. No external power wiring is necessary because the meter is battery-operated, reducing installation time and avoiding interference with the vehicle’s electrical system.

• Compact size: approx. 1.6" long by 3" wide for flexible mounting
• Battery-powered: one CR2450 lithium cell, no external power needed
• Simple wiring or pickup hookup for most small gasoline engines
• Mounting options allow dashboard, panel, or frame placement

What maintenance reminders and settings are available?

Two programmable maintenance interval counters (SVC and SVC2) let you set service reminders for oil, filters, or other routine tasks. When a chosen interval is reached, the LCD flashes to alert you, helping prevent overdue maintenance based on actual runtime rather than guesswork.

• Two independent service counters for staggered reminders
• Flashing LCD alert when a service interval is reached
• Easy-to-program intervals to match manufacturer recommendations
• Helps track multiple maintenance items separately

Which engines and vehicles work best with this tachometer?

This digital tachometer is built for small gasoline engines across a range of outdoor equipment and powersports. It’s compatible with popular small-engine brands and fits applications where a lightweight, self-contained RPM and hour solution is preferred.

• Suitable for lawn mowers, go-karts, dirt bikes, snowmobiles, and boats
• Works with small engines from Honda, Yamaha, Kohler, Husqvarna, Briggs & Stratton, and similar
• Ideal for portable generators and outboard/inline marine engines
• Useful for fleet equipment where consistent maintenance is important

Who is this for: The CarBole Digital Hour Meter Tachometer is aimed at DIY mechanics, landscapers, fleet managers, and powersports enthusiasts who want a simple, reliable way to track runtime and RPM without complex installation. If you need a compact gauge to record hours, trigger service alerts, and monitor engine speed across a variety of small gas-powered machines, this unit provides a durable, battery-powered solution.