Digital Tachometer Chainsaw Tachometer Tach Gauge Digital Display Pulse Speedometer for Induction Chain Saw Cropper Cropper Generator Lawn Mower

• Digital Tachometer：The chainsaw tachometer is used to measure two-stroke or four-stroke fuel or gasoline engines with up to 8 cylinders (speed RPM), engine working timing cumulative time, and some other unique functional designs. Suitable for any 2-stroke or 4-stroke gasoline vehicle engine in the 30,000+ RPM range.
• Energy Saving：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 testing. LCD display, low voltage design, built-in battery (CR2450) power supply, inductive design, safe and reliable.
• Multiple Measurement Methods：After installing one end of the electronic wire on the electronic watch case, use a metal clip to clamp it on the spark plug wire sheath for induction measurement; bundle the electronic wire on the spark plug wire sleeve, wrap it several times, and perform induction measurement. . A handheld tachometer measures 3 cm to 5 cm near the spark plug wire boot.
• Timing Range：1 minute ~ 99999 (MIN minutes); speed mode setting: long press the (SET) key, the screen displays 01, 02, 03, 04 in sequence; power off: press and hold the (SET) key, the screen displays 01, 01, 02, 03, 04 in sequence; 02, 03, 04; long press the (MODE) key to view historical high-speed data. Press "MODE" and "SET" simultaneously until full screen to clear recorded run time and speed data.
• Wide Application：Gasoline engines (engines, chainsaws, lawn mowers, gliders, motorcycles, cars, go-karts, engineering vehicles, snowmobiles, ATVs, motorboats, grinders, generators, vibrators) mechanical equipment, etc.

1---Doubling relationship: The product has 4 modes: 01-02-03-04. Let’s be clear first. In modes 01, 02, 03, the speed value is doubled. 01, 02, 03 is a simple Multiple relationship.

For example, the same engine, the same idle signal, if read in 01 mode, assuming it is 1000RPM. If read in 02 mode, then it is 2000RPM. If read in 03 mode, then it will be 4000RPM. It is a doubling relationship. 04 is for reset. Yes, dont worry about it.

2---Stroke misunderstanding: Do not regard 02 mode as 2-stroke and 03/04 mode as 4-stroke. This is a misunderstanding. Because some 2-stroke engines are adapted to the 02 mode, and some 2-stroke engines are adapted to the 03 mode, it cannot be intuitively used to represent all 2-stroke engines with 02 and 03/04 with all 4-stroke engines. This is wrong.

3---Focus on the 02 mode: Customers should have a certain understanding of their own engines. For example, the approximate idle range of a motorcycle is 1000RPM. If the engine is hot, it will be around 1000RPM, then our tachometer will be connected. The default setting for the spark plug tube is 02 mode. If the reading data is 2000RPM, it is twice as large. Select mode 01, so that the display will be twice as small. If the data read in 02 mode happens to be around 1000RPM, then it corresponds. If the reading data in 02 mode is only about 500RPM, which is twice as small, then adjust it to 03 mode to make the display data twice as large. The reason why we dont use 02 to correspond to 2-stroke and 04 to 4-stroke is because there are many unconventional engines on the market, and one model cannot be fixed to suit all engines.

4---Tips: The alligator clip of the tachometer must clamp the spark plug tube to get a signal. Otherwise, the signal will be wrong if it is connected to other places. Customers must know that the alligator clip clamps the spark plug tube.

1.Common sense: For general carburetors and motorcycles, the idle speed is almost 1000RPM. For an EFI motorcycle, the idle speed is almost 2000RPM. Chain saws generally use 02 mode, with an idle speed of around 3000RPM. All chain saws are in 02 mode, carburetors/motorcycles are generally in 02 mode, EFI motorcycles are in 03 mode, outboard engines each have their own mode, usually 01 or 02 mode, EFI vehicles (non-gasoline engines) Out of service. Diesel engines cannot be used. 2-stroke single cylinder and 2-stroke 2-cylinder are both considered 2-strokes and generally correspond to the 01 mode.

2.Methods and methods: If you are measuring a chain saw, the spark plug tube is also called the high-voltage envelope. High voltage envelopes may be hidden far inside. If its too deep, even the clip wont hold it, so its best to take it off. Make a full circle of wire. Because the high-pressure package of some chainsaws is on the outside, while others are hidden inside the bottom of the furnace mouth. Our tachometer is a copper plate. If the copper plate is to sense this place, it is best to be closer to this place, and the data read will be more accurate. If you are far away from the signal source, the data read will be inaccurate.