1. Tuote ohiview
The KEBIDUMEI Digital Engine Tach Hour Meter is a versatile and high-quality device designed to measure engine RPM (revolutions per minute) and track engine operating hours. It features a large LCD screen for easy readability and is suitable for a wide range of two-stroke and four-stroke gas engines, including those found in motorcycles, ATVs, snowmobiles, marine vessels, chainsaws, lawnmowers, and more. The device is inductive, waterproof, and offers programmable maintenance reminders.

Figure 1: KEBIDUMEI Digital Engine Tach Hour Meter with dimensions.

Figure 2: The tachometer is designed to be waterproof.
2. Asennus
Follow these steps to properly install your Digital Engine Tach Hour Meter:
- Locate the Spark Plug Wire: Identify the spark plug wire on your engine.
- Wrap the Inductive Wire: Take the inductive wire attached to the tachometer and wrap it around the spark plug wire approximately 5 times. Ensure a snug fit for accurate readings.
- Kiinnitä johto: Secure the wrapped wire in place using electrical tape or a cable tie to prevent it from coming loose during operation.
- Mount the Tachometer: Mount the tachometer in a convenient and visible location on your vehicle or equipment.

Figure 3: Installation diagram and stroke mode selection.
2.1. Engine Type Selection (Stroke Mode)
After installation, you need to select the correct engine type for accurate RPM readings. This is done by holding the 'S1' button.
| Näyttökoodi | Moottorin tyyppi |
|---|---|
| 01 | 4-tahti yhteistä |
| 02 | 2 stroke in common (Default) |
| 03 | Muu aivohalvaus |
| 04 | Kierroslukumittari sammuu, näyttää vain käyttötunnit |
The default setting for the standard model is '02' (once per revolution).
Video 1: Demonstration of tachometer installation and RPM reading on a lawnmower.
3. Käyttöohjeet
3.1. Setting the Tachometer (Spark Plug Firing Revolution)
To set the tachometer for accurate RPM readings based on spark plug firing revolutions:
- Press and hold the S1 button for 4 seconds. The LCD will display a code (e.g., 01 for spark plug fires twice per revolution, 02 for once per revolution, 03 for every other revolution, 04 for hour only).
- Once you find your desired spark plug firing pattern, release the S1 button.
- Nestekidenäyttö vilkkuu 8–10 sekuntia ja palaa sitten kokonaistuntimittaritilaan.

Figure 4: Setting the tachometer for spark plug firing revolution.
3.2. Displaying Hours Only
To display only the operating hours without RPM:
- Paina S1-painiketta ja pidä sitä painettuna, kunnes näytössä näkyy '04'.
- Release the S1 button. The display will return to total hours after 8 to 10 seconds.
- When the engine is running, the display will show hours only, and the Hour Icon will blink.

Figure 5: Displaying hours only.
4. Huolto
4.1. Activating the Maintenance Interval Timer
To set a maintenance reminder:
- Press and hold the S1 and S2 buttons simultaneously for 4 seconds.
- The two digits will increment to '09' seconds and then return to total hours mode.
- When the engine is running and the maintenance time has reached zero, the service icon will illuminate.
4.2. ViewHuoltoväli
Vastaanottaja view the remaining time of your maintenance interval:
- Press and hold the S2 button for 4 seconds.
- To continue current maintenance, do nothing.
- If you wish to start a new maintenance interval, repeat steps 4 and 5 of the activation process.
4.3. Resetting the Service Icon and Total Hours
To reset the service icon and perform a total reset of hours:
- Press and hold the S1 and S2 buttons for 20 seconds.
- The service icon will shut off.
- The maintenance time will automatically default to the number previously programmed.
- To reset total hours and maintenance time, press and hold the S1 button until '05' is displayed. Release the S1 button and after 8 seconds the display will return to total hours. Then press and hold S1 and S2 simultaneously for 20 seconds to perform a total reset.

Figure 6: Maintenance interval timer functions.
5. Vianmääritys
- Ei näyttöä/välkkyvä näyttö: Ensure the inductive wire is securely wrapped around the spark plug wire (at least 5 times) and properly secured. Check for any damage to the wire. The device is designed with anti-flicker technology.
- Incorrect RPM Readings: Verify that the correct engine type (stroke mode) has been selected using the S1 button as described in Section 2.1.
- Device Not Turning Off: This device is designed to be always on to continuously track hours and RPM when the engine is running. It does not have a dedicated 'off' button.
- Akun vaihto: The device uses an internal battery. While specific replacement instructions are not provided, it is typically a sealed unit. If the display becomes dim or unresponsive, the battery may need professional replacement or the unit may need to be replaced.
6. Tekniset tiedot
| Ominaisuus | Kuvaus |
|---|---|
| Malli | SW000001 |
| Merkki | kebidumei |
| Materiaali | Muovi |
| Tuotteen pituus | 76 mm |
| Tuotteen leveys | 46 mm |
| Tuotteen korkeus | 20 mm |
| Tuotteen paino | 60 g |
| Erikoisominaisuudet | Digital Tachometer Hour Meter, Inductive Display |
| Kierroslukualue | Above 25,000 RPM |
| Hour Counter Range | Up to 10,000 hours (resets to zero after) |
| Ajastinalue | Jopa 99,999 rpm |
| Moottorien yhteensopivuus | Any two-stroke or four-stroke gas engine, all spark ignition engines |
| Vedenpitävä | Kyllä |
| Alkuperä | Manner-Kiina |
7. Käyttäjävinkkejä
- For optimal accuracy, ensure the inductive wire is tightly and consistently wrapped around the spark plug wire.
- The tachometer is confirmed to work accurately on 2-stroke engines, making it suitable for boat applications.
- Regularly check the maintenance interval timer to ensure timely servicing of your engine.
8. Takuu ja tuki
For any product inquiries, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase records for reference.





