{"product_id":"small-engine-tachometer-tachometer-for-small","title":"Small Engine Tachometer, Tachometer for Small","description":"\u003cp\u003e\u003cstrong\u003eHFWHOK Small Engine Tachometer is a compact digital RPM meter and hour gauge that clips to the spark plug wire to display engine speed, run time, and a programmable maintenance reminder.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis handheld\/vehicle-mounted tachometer combines RPM measurement, elapsed-hours tracking and a service countdown in one battery-powered instrument. It installs quickly with a sturdy bracket and a spark-plug clip — no wired power hookup needed — and keeps stored data while you change the battery. With a clear backlit display, programmable RPM alarm and support for both contact and short-range wireless sensing, it works across many gasoline engines from lawn mowers to snowmobiles.\u003c\/p\u003e\n\n\u003ch3\u003eHow accurate and wide-ranging is the RPM reading?\u003c\/h3\u003e\n\u003cp\u003eThe HFWHOK tachometer reads engine speed from 0 up to 18,000 RPM with a quoted accuracy around ±10 RPM and a refresh update roughly every 0.5 seconds. It’s suitable for small gasoline engines where quick RPM feedback helps tune performance or protect the engine from overspeeding.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeasurement range: 0–18,000 RPM\u003c\/li\u003e\n  \u003cli\u003eTypical accuracy: ±10 RPM\u003c\/li\u003e\n  \u003cli\u003eRefresh rate: approximately 0.5 seconds\u003c\/li\u003e\n  \u003cli\u003eProgrammable RPM alarm with red backlight warning\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the hour meter and service timer work?\u003c\/h3\u003e\n\u003cp\u003eThis unit tracks total operating hours with 0.1-hour resolution and stores timing data even when you replace the battery. The SVC (service) countdown can be set from 0 to 500 hours to remind you when maintenance is due, and you can reset or return the device to factory defaults from the settings menu.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTiming range: 0–9,999 hours with 0.1-hour accuracy\u003c\/li\u003e\n  \u003cli\u003eSVC default: 50 hours (adjustable 0–500 hours)\u003c\/li\u003e\n  \u003cli\u003eSettings adjusted via M and S buttons; long-press restores factory settings\u003c\/li\u003e\n  \u003cli\u003eData retention while replacing battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and sensing on different machines?\u003c\/h3\u003e\n\u003cp\u003eInstall the tachometer with the included bracket that secures to round tubes or other mounting points; then clamp the sensing clip to the spark plug wire or use short-range wireless sensing within 3–5 cm. No external power wiring is required — the unit runs on an internal battery and includes low-battery detection.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMounts to tubular frames with supplied bracket\u003c\/li\u003e\n  \u003cli\u003eSensing methods: clip-on spark plug wire or wireless induction\u003c\/li\u003e\n  \u003cli\u003eOptimal wireless sensing distance: 3–5 cm\u003c\/li\u003e\n  \u003cli\u003eIncluded ~2.2 m wire for flexible routing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat display, alarm and convenience features are included?\u003c\/h3\u003e\n\u003cp\u003eThe screen (40 x 22 mm) uses a green backlight for normal viewing and turns red when RPM exceeds the programmed alarm threshold. The tachometer supports multiple display modes (RPM, MAX RPM, clock, memory functions) plus auto-sleep and reset capabilities to save battery life. Battery-level indicator and memory recall simplify long-term monitoring.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eScreen size: 40 × 22 mm with green default backlight\u003c\/li\u003e\n  \u003cli\u003eRed backlight triggers when RPM alarm is exceeded\u003c\/li\u003e\n  \u003cli\u003eModes: TOT\/JOB\/SVC\/MAX RPM\/RPM\/clock\/memory\u003c\/li\u003e\n  \u003cli\u003eAuto-sleep, reset function, and battery low alert\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: If you maintain small gasoline engines — from push mowers, trimmers and go-karts to motorcycles, ATVs, snowmobiles and small boats — and need a compact, battery-powered tachometer with run-time tracking and a settable service reminder, the HFWHOK Small Engine Tachometer is designed for rapid installation, clear RPM feedback and basic maintenance scheduling without complex wiring.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this tachometer track total engine hours?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It records elapsed hours up to 9,999 with 0.1-hour precision and preserves data during battery replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to wire this to my vehicle’s electrical system?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. It runs on an internal battery, clips to the spark plug wire, and supports short-range wireless sensing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"HFWHOK","offers":[{"title":"Default Title","offer_id":48087267082398,"sku":"B0FLJSRX8R","price":39.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/hfwhok-front-display-tachometer.jpg?v=1785919642","url":"https:\/\/northtrailauto.ca\/products\/small-engine-tachometer-tachometer-for-small","provider":"North Trail Auto","version":"1.0","type":"link"}