DIGITAL GAUGE Digital Tachometer Part No. 17-863
No. of ignition
per crank rotation
No. of ignition
per crank rotation
OWNERS MANUAL
*Before installing the digital tachometer, carefully read these instructions.
USES
This tachometer is designed for use on motorcycles, cars, karts, snowmobiles, etc.
Features
-Suitable for 2- and 4-cycle engines with any number of cylinders.
-Engine speed displays the current engine speed. (Does not work on the point ignition system)
Engine speed measuring range by cycle/cylinder is shown below.
-Auto Power Off
*Automatically switches off 10 seconds after the external power supply is shut off. Display can be
recalled by pressing the "MODE" or "SET" button, or repowering.
*If the tachometer is not connected to the external battery, it won't display continuously due to this
auto off function. In order to continuously show the display, connect the device to a 3V or higher
voltage dry-cell battery. (9V or higher voltage power supply necessary for LED lighting.)
-Maximum engine speed records and displays the maximum engine speed. (This speed can be reset.)
-Clock displays the time in the 24-hour system.
-Elapsed time totals and displays the length of time that the engine has been running.
*This function is useful for remembering when to change the oil or when to perform regular
maintenance work. (This function cannot be reset without removing the internal battery.)
-LED lighting allows the display to be read in the dark. LED lights up only when the gauge is connected to
vehicle's battery or a 9V dry-cell battery purchased separately.
-Auto display switching automatically displays the tachometer reading when the ignition is switched on and
displays the time when the ignition is switched off. (This function is available only if the red lead of the EL
backlight cord is connected to the lead that receives current when the ignition is switched on.)
-Sturdy and water-resistant construction is made to withstand everyday use in any weather condition.
* Tachometer is not completely waterproof. Do not submerge in water or expose to pressurized water.
-Internal battery is a chargeable lithium battery(ML2430/3V) equipped inside the gauge, but is not
exchangeable. If the tachometer is connected to the vehicle's battery and the ignition is switched on, the
tachometer automatically begins drawing power from the vehicle's battery in order to conserve the internal
battery. While being connected to vehicle's battery or a dry-cell battery purchased separately, internal
battery is automatically charged. If the internal battery has been fully used, the cycle/cylinder settings,
elapsed time, maximum engine speed reading and clock will be reset. If this happens, the internal battery
should be charged for about 10 hours.
CONTENTS
INSTALLATION
Using the fastening tape ○3, install the digital tachometer ○1 to a location where it can be easily read.
Connecting the ignition pulse sensor lead
The ignition pulse sensor lead can be connected in two different ways.
Fig A : Use SENSOR TYPE A
*Wind the ignition pulse sensor lead onto spark plug cord, then secure it with insulating tape
Fig B : Use SENSOR TYPE B
*Directly connect the ignition coil's positive wire.
For 4 cycle engine, this "Primary Wiring" is more recommended in order to display an accurate engine speed.
**Be sure to ground the black GND-code even if the LED light code is not connected to external battery in
order to stabilize the display. Non resistor spark plug or racing plug may cause display freeze. If this is the case,
change it to a resistor spark plug.