CHT Sensor- the one that looks like a brass washer on the end
Remove the spark plug from the cylinder you wish to monitor
and discard the plug washer.
Check the surface of the head around the spark plug hole for a
smooth, flat finish to assure a good seal when the sensor is
installed.
Position the sensor over the spark plug hole and check to be
sure you have sufficient clearance around the outside of the
sensor body to avoid damage when the plug is installed and
tightened.
Install the spark plug finger tight to hold the sensor in position.
Finish tightening with a plug wrench to the same torque as
normally recommended. Do not allow the sensor to turn as you
tighten the plug. The sensor is easily damaged if forced into a
cooling fin.
Route the sensor cable from the motor to the instrument.
Secure the cable to the frame with cable ties.
Connect to the RF style pigtail on the instrument and turn the
connector until tight.
TACH Sensor the blunt end one
To install them, clamp or tie-rap the blunt end of the tach sensor to a
plug wire, 1 " from the spark plug end. Try to keep the end of the
sensor parallel to the plug wire and route the cable as far away
from the ignition coil as far possible.