LCD Display Handheld Digital Induction Chainsaw Tachometer, 2 Stroke 4 Stroke Small Engine Tachometer, Tach Gauge for Chainsaw Lawnmowers Gasoline Engine Timed in Minutes

-1.Pulse Engine Tachometer: This chainsaw tachometer used in the measurement of up to 8 cylinders, widely used in 2-stroke or 4-stroke fuel or gasoline engines. Measuring range: 100-30000 RPM. Measurement accuracy: 1%.Timed in minutes, timing range: 1-99999 (min).
-2.Inductive Design Tachometer: The handheld digital induction chainsaw tachometer is inductive design, low voltage design, LCD display, built-in CR2450 battery power supply, safe and reliable. This tach gauge comes with a clip to hold the spark wire.
-3.Zero & Reset Function: Long-press "SET" key, the screen will display 01, 02, 03, 04 in sequence, until display "04" and flash 3~5s then stop flashing to activate the reset function. Simultaneously press "MODE" and "SET" until fullscreen, clearing recorded operating time and speed data.
-4.Measurement Methods: After one end of the electronic wire is installed on the electronic watch casing, use a metal clip to clamp it on the spark plug wire sheath for inductive measurement. The electronic wire is bundled on the spark plug wire sheath and wound for a few times to sense and measure; handheld the tachometer measures 30mm to 50mm near the sheath of the spark plug wire.
-5.Wide Applicable: Suitable for strokes (cylinders 1-8) gasoline engines, such as chainsaws, lawn mowers, gliders, motorcycles, automobiles, karts, engineering vehicles, snowmobiles, ATVs, motor boats, grinders, generators, Vibration machine mechanical equipment and etc.
-6.Energy Saving: convenient and practical, when the gasoline engine is not working, the tachometer will automatically save energy and power, and automatically turn off the display; when the gasoline engine is working, the tachometer will automatically start the test.

In The Box:
1. Digital Tachometer
2. Metal Clip with wire
3. User manual

FQA.
1---Doubling relationship: the product has 01-02-03-04 these 4 modes, to make it clear first, 01, 02, 03 mode, RPM value is doubled, 01, 02, 03 is a simple multiplier relationship. For example, the same engine, the same idle signal, 01 mode to read, assuming 1000RPM, 02 mode to read, then it is 2000RPM, 03 mode to read, then it is 4000RPM, is a doubling relationship, 04 is for reset, don't worry about it.
2--- Stroke Misunderstanding: Don't take 02 mode as 2 stroke, 03/04 mode as 4 stroke, this is a misunderstanding. Because some 2-stroke engines are adapted to 02 mode, and some 2-stroke engines are adapted to 03 mode, so you can't intuitively use 02 to represent all 2-stroke engines, and 03/04 to represent all 4-stroke engines, which is wrong.
3 --- 02 mode as the center of the expansion: guests should have a certain understanding of their own engines, such as motorcycle idle speed range is 1000RPM, the engine is hot, is 1000RPM up and down, then our tachometer wired to the spark plug tube, the default is 02 mode, read out the data is 2000RPM, then it is twice as big, then choose 01 mode, so the meter will be twice as small. That way the meter display will be twice as small. If the 02 mode reads exactly 1000RPM, then it corresponds. If the 02 mode reads only about 500RPM, which is twice as small, then set it to 03 mode, so that the meter will be twice as large. The reason why we don't use 02 to correspond to a 2-stroke and 04 to correspond to a 4-stroke is because there are a lot of unconventional engines on the market itself, and you can't fix one mode to fit all engines.
4 --- Tips: the tachometer alligator clips, must be clamped to the spark plug tube to have a signal, otherwise connected elsewhere, the signal is not right, the guests must know alligator clips clip spark plug tube.