Feature

●❤【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).
●❤【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.
●❤【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.
●❤ 【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 3 cm to 5 cm near the sheath of the spark plug wire.
●❤【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 so on
●❤【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.

Description

DDayuanwei Handheld Digital Induction Chainsaw Tachometer

Default is 02 mode, check if the displayed RPM is close to the actual RPM.

Yes, its very close. → No changes needed

No, its twice as big as the real one. → Press the right button change to mode 01

No, its twice as small as the real one. → Press the right button change to mode 03

Speed Mode Setting: long press (SET) key, the screen will display 01, 02, 03, 04 in sequence; (screen 01, 02, 03, display the speed mode corresponding to various engine strokes) The factory default value is 02 Speed mode. Releasing the button with your finger will flash the displayed data for 3 to 5 seconds and then confirm the start of the speed mode, and then you can measure.
Shut down: Hold down the (SET) key, the screen will display 01, 02, 03, 04 in sequence; when the screen displays 04, it will flash for 3 to 5 seconds. After stopping, confirm to start the system reset mode, and press the (MODE) key at the same time Press and (SET) until the full screen is displayed (the recorded working time and speed data are cleared).
Long press (MODE) key to view historical high speed data.

FQA: Its a mistake to think of the 02 mode as a 2-stroke and the 03/04 mode as a 4-stroke. Because some 2-stroke engines are suitable for 02 mode and some 2-stroke engines are suitable for 03 mode, it is not intuitive to use 02 for all 2-stroke engines and 03 for all 4-stroke engines.
FQA: The general carburetor and motorcycle are almost idling about 1000 rpm, if the EFI motorcycle is about 2000 rpm, the chain saw is generally in 02 mode, and the idle speed is about 3000 rpm. All chain saws are in 02 mode, carburetors/motorcycles are generally in 02 mode, EFI motorcycles are in 03 mode, outboards have their own, generally 01 or 02 mode, EFI (non-gasoline engine) can not be used, diesel engines cannot be used, 2-stroke single cylinder and 2-stroke 2 cylinders are counted as two-stroke, generally corresponding to 01 mode.
FQA: If you switch modes during measurement, the measured value is not a multiple. it should be a problem with the wiring, either the clamp is not clamped steadily, or the tachometer does not know where to put it, and there are other interference signals going in. First fix it in a place where there is no signal going in, for example, if the signal goes in, there must be a number jumping. After fixing, this crocodile clip and then clamp the spark plug tube, and then the engine opens, if the jump is relatively large at the beginning, it is estimated that the engine is not hot, and the number may not be stable at this time.
FQA: You should have a certain understanding of your engine, for example, the approximate range of motorcycle idle speed is 1000 rpm, the engine is hot, the tachometer is connected to the spark plug tube, the default is 02 mode, if the readout data is 2000, then choose 01 mode. If the data read by the 02 mode is about 1000 rpm, then the 02 mode is selected. If the 02 mode reads out only about 500 data, then change it to the 03 mode. The reason why we dont use 02 for 2-strokes and 04 for 4-strokes is because there are many unconventional engines on the market, and there is no fixed mode to fit all engines.
FQA: If it is a chain saw, the spark plug pipe, also known as the high-pressure envelope, may be hidden inside, and the clamp cannot be clamped, and the winding wire needs to be measured. Some chainsaws have an external high-pressure envelope, while others are hidden inside the bottom of the stove. Our tachometer has a copper sheet, the copper plate to induct the chain saw, close to the spark plug tube, the reading data will be relatively accurate, if it is far away from the signal source, the reading data will be inaccurate.

This rpm meter works for most types of gasoline engines, 2 stroke or 4 stroke gas engines, such as outdoor power equipment, generators, agriculture, construction machinery, vehicles, boats, Marine, etc...

Package: 1* tachometer, 1* Clip, 1* Instruction

Whats in the box