J.P. Instruments EDM 960 Twin Pilots Guide - Manual (Page 47)

For Your Safe Flight Page 42
Fine Tuning the K factor
Aircraft installation will affect K factor. Because of this you should ‘fine-
tune’ the K-factor, for your aircraft, as described below:
1. Fill each aircraft tank that each engine will run from (note: engine
return lines must return the fuel to each respective tank). ‘Refuel’ EDM,
noting that ‘USED’ resets to zero for each engine.
2. Fly aircraft for 2 to 3 hours. Immediately after engine shutdown, record
EDM ‘USED’ parameter for each engine in chart below.
3. Refill each tank and record ACTUAL USED for each tank in the in
chart below.
EDM ‘USED’ ACTUAL USED
Flight Left Engine
USED
Right Engine
USED
Left Engine
Tank
Right Engine
Tank
A
B
C
Totals
   
4. Total

the EDM calculated fuel ‘USED’ and

the actual fuel used
for each engine.
5. Record the current K factor here

_________ and in the table below.
6. Calculate the New K factor for each engine as follows:
New K factor = (

EDM fuel used) x (

( actual fuel used)
Current K factor)
New K factor = (

) x (

(

)
)