CarBole Digital Hour Meter Tachometer for Small Engines — Black, Battery‑Powered RPM Gauge & Maintenance Reminders

CarBole’s digital hour meter tachometer is a compact battery-powered RPM gauge and runtime counter that tracks engine hours up to 99,999 with programmable maintenance reminders.

Designed for small gas engines on lawn mowers, generators, dirt bikes, snowmobiles, boats and more, this lightweight tach/hour meter gives you accurate RPM readings up to 20,000 and logs cumulative operating time in 0.1‑minute increments. It runs on a single CR2450 lithium battery, so there’s no need to tie into the vehicle’s electrical system. Two service interval reminders can be set to flash on the LCD when scheduled maintenance is due, helping you stay on top of oil and filter changes.

How does the CarBole tachometer measure engine RPM and hours?

The unit reads ignition pulses to calculate engine revolutions per minute and accumulates run-time in tenths of a minute for precise hour tracking. RPM accuracy is specified to about ±10 RPM and the meter can display up to 20,000 RPM, while the hour counter stores up to 99,999 hours.

• Pulse-based RPM sensing suitable for most single- and multi-cylinder small engines
• Hour resolution: 0.1 minute increments for precise service intervals
• Maximum hour capacity: 99,999 hours
• RPM range: up to 20,000 RPM with declared 10 RPM accuracy

What power source and installation does it require?

This CarBole tachometer is self-contained and powered by one CR2450 lithium battery—no external wiring is required. The compact size and lightweight design make it easy to mount on panels or handlebars using screws or adhesive; typical installs require access to the ignition coil or pickup for signal detection.

• Battery: single CR2450 (included/replacement—check packaging)
• No external power wiring needed; reduces installation complexity
• Compact footprint fits on dash panels, handlebars, or instrument clusters
• Simple mounting with small screws or adhesive backing (hardware not supplied)

How do the maintenance reminders and settings work?

Two programmable service intervals (SVC and SVC2) let you set countdowns for routine maintenance tasks. When an interval is reached the LCD flashes an alert so you can plan oil changes, filter replacements, or other checks without guessing run-time.

• Two independent service timers you can set to your preferred intervals
• Flashing LCD reminder at the end of each programmed interval
• Clear numeric readout for both RPM and accumulated hours
• Easy-to-access buttons for setting and resetting service counters

Which engines and vehicles is this meter compatible with?

The CarBole digital tach/hour meter is built for small gasoline engines found in lawn mowers, generators, ATVs, dirt bikes, snowmobiles, boats, go-karts and similar equipment. It works with popular small-engine brands and generic single- and multi-cylinder ignition systems commonly used on these machines.

• Compatible with small gas engines: lawn mowers, generators, go-karts, bikes
• Suitable for brands like Honda, Yamaha, Kohler, Husqvarna, Briggs & Stratton
• Works with magneto/coil pulse outputs and most ignition pickup signals
• Not intended as a replacement for complex engine-management systems

Who is this for: CarBole’s Digital Hour Meter Tachometer is for homeowners, landscapers, fleet managers and hobbyists who want a simple, battery-powered solution to monitor engine hours and RPM without rewiring a vehicle. It’s especially useful if you maintain multiple pieces of small equipment and need accurate run-time records and scheduled maintenance reminders in a compact, easy-to-mount package.