J.P. Instruments EDM-760 TWIN User Manual

 cold OIL and normal oil pressure
 abnormally high CHT
 large drop in EGT on one cylinder in single magneto operation—
may be fouled spark plug.
Take-Off, Climb, and Full Throttle Operations
Suggested setup:
 Percentage view
 Automatic mode
Verify:
 EGTs and CHTs consistent with past climbs. EGTs should be in
the 1100 to 1300°F range (100° to 300°F cooler than cruise) due
to fuel cooling.
Be alert for:
 high EGT in one cylinder, 300°F above the others may indicate
plugged injector or leaking manifold gasket on a carbureted
engine.
 If all EGT columns go off scale to the top of the column, be sure
you are not in Normalize view, as indicated by the symbol NRM
to the left of the horsepower display.
At high density altitude an overly rich mixture can significantly reduce
engine power.
Cruise
After the engine is warmed up, use LeanFind to lean the mixture.
Suggested setup:
 Normalize view
 Automatic mode
Be alert for:
 uneven EGTs (injected engines). Make fine adjustments to
throttle, then RPM, then mixture to level the display columns.
 abnormal patterns of EGTs and CHT. (see “Engine Diagnosis
Chart” on page 26).
For Your Safe Flight Page 23

J.P. Instruments EDM-760 TWIN Specifications

General

Brand	J.P. Instruments
Model	EDM-760 TWIN
Category	Avionics Display
Language	English