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. This may require some minor machining on some
installations.
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 RF style
connector on the back of your instrument. Secure the cable to
the frame of the snowmobile with tie-raps. Connect to the RF
style pigtail on the instrument and turn the connector until
tight.
OIL TEMPERATURE SENSORS
OT-***BN:
Any port normally used to monitor the oil
temperature may be used for the oil temperature sensor. The
compression fitting supplied with the sensor is a standard 1/8
"
NPT. In some installations, a reducing bushing may be required
to adapt the compression fitting to an available oil temperature
port. Insert the end of the sensor through the compression
fitting into the oil to a depth of at least 1
"
. Tighten the
compression nut to secure the sensor in place.
Route the sensor cable to the instrument, securing the cable
with cable ties. Attach the cable to the
yellow boot
and twist the
connector ¼ turn to lock.
OIL/FUEL/BOOST PRESSURE SENSOR
The pressure sensor supplied with your instrument will monitor
pressures up to 16 PSI for the OP-16S, 30 PSI for the OP-30 and
150 PSI for the OP-150S.
This type of sensor relies on some engine vibration and a good
ground for proper operation. If you are not mounting it directly
to the block, you should use a bracket that attaches to the
block. (A muffler clamp works well for this purpose.) Attach the
sensor extension cable to the sensor and route this cable to the
instrument securing with cable ties. Attach the
brown
,
green
or
violet
boot
to the same color on the instrument. Twist the
connector ¼ turn to lock.
NOTE
:
If you are monitoring fuel pressure and are burning
alcohol you must remove the sensor after draining your fuel.
Alcohol vapors will damage the seals in the sensor.
JACKSHAFT RPM
MPH-102AS:
Mount the sensor bracket so that the nylon arm
is parallel to, centered on and approximately 1
"
away from the
shaft.
Trim the flexible collar to the proper length for your shaft and
mount it on the shaft so that the edge with the magnets is
centered on the sensor mounting hole in the bracket. Use the
collar as is for 1 1/2
"
shafts. Cut at the first mark for 1 1/4
"
shafts, the second mark for 1 1/8
"
or the third mark for 1
"
shafts.
Secure the collar to the shaft with a cable tie.
Mount the sensor in the bracket so that the end of the sensor
is within 1/8
"
of the collar and the slots in the sensor are in line
with the edge of the collar. Secure the sensor in this position
with the nuts and lock washers provided.
Route the cable assembly to the instrument and secure with
cable ties. Connect the cable to the
blue and black boot
on the
back of the instrument and turn the connector ¼ turn to lock.
OVER LIMIT WARNING LIGHT
The panel mount “over limit” light is designed to be mounted in
a dash panel or a bracket. It should be mounted directly facing
you in a place where it is in your normal field of vision while
driving.
The “over limit” light requires a 1/2
"
mounting hole in the dash
panel. Place the aluminum indicator bezel through the hole from
the drivers side. Press the retaining washer on to the back side
of the aluminum bezel. (This takes a lot of pressure.) Insert the
lamp assembly through the back of the bezel into the lens.
Press the plastic retaining plug into the rear of the bezel to
secure the lamp assembly in place.
The helmet mount version of the light is contained in a suction
cup that is designed to mount on the side of your face shield at
eye level and out of your direct line of sight. Experiment to find
the best location on your face shield and then attach the
suction cup. Use a dab of petroleum jelly or baby oil on the
suction cup for best adhesion.
Route the cable to the instrument, secure it with cable ties and
connect it to the
orange boot
. Turn the connector ¼ turn to
lock.
REPAIRS
If you have any questions about the operation of your
instrument or sensors, please call us. One of our technicians
will be happy to help you.
Your instrument is warranted to be free from factory defects
and electronic failure for one year from the date of purchase.
Physical damage during normal usage is not covered under the
warranty. Be sure to fill out and return your warranty card for
our records. If we do not have a card on file for your
instrument, you will be charged for repairs unless you can
provide us with proof of purchase date.
When returning an instrument for repair, enclose a note
indicating your return address, phone number and a detailed
description of the problem. Send your instrument and sensors
so that we can check the complete system. Repairs will
normally be completed within ten working days.
Send repairs to:
Digatron
8102 N. Freya St.
Spokane, WA 99217
Phone: (509) 467-3128 Fax: (509) 467-2952
9/1/99
