Suzuki 990C0-86B40 - Manual (Page 4)

Calibration
Gauge
is Pegged A. 1. 1. The synchronizer is in
the wrong switch
position. Check calibration.
(See the calibration
section at end of this
manual.) The synchronizer
reads hi or low.
2. The synchronizer is
not calibrated.
Gauge
is Erratic A. 1. 1. Check for insulation
that may have been
pushed into connection. Fix connection. Inspect the connection
between the wire and
the ring connector.
B. 1. 1. Check wires by
connecting one wire
at a time to the
synchronizer directly
from the battery or
the signal source on
the engine. Relocate offensive
appliance. Please
refer to installation
instructions. Check for excessive
electrical noise caused
by an electrical
appliance set to close
to the gauge. i.e. a
magnetic compass, a
radio transmission.
Start the engines and (after an appropriate warm-up period and with shifts in neutral) increase their
speeds to the boat's normal cruising RPM. (Both tachometers must be properly calibrated.) Set the
coarse adjustment switch to the proper position described on it's label. Remove the stop-plug (at the
8-o'clock position on the rear of the case for most) and insert a 5/16" allen wrench into the "fine
adjustment" trumpet, rotating it CW or CCW as necessary to center the synchronizer.
Trouble
Shooting
Trouble Inspection Diagnosis Action