40
Engine idle management:
IDLE-DOWN
 and 
THR-CUT
: functions which work with the digital THROTTLE TRIM to provide 
a simple, consistent means of engine operation. No more fussing with getting trim in just the right spot for landings or take 
offs! For additional engine adjustments, see 
THROTTLE-NEEDLE
 (p. 65) and 
THROTTLE DELAY
 (p. 66). 
IDLE-DOWN
 (
ACRO
 only): lowers the engine idle for: sitting on the runway prior to take off, stalls and spins, and landings. 
7KHQRUPDOLGOHVHWWLQJLVDOLWWOHKLJKHUIRUHDVLHUVWDUWVDQGVDIHÀLJKWVZLWKOHVVULVNRIGHDGVWLFNV
Important note: The 
IDLE-DOWN
 function is not normally used when starting the 
engine, and its accidental operation may keep your engine from starting. The 
10C warns that 
IDLE-DOWN
 is on when the transmitter is turned on. Be sure to 
turn off the function, or override the warning by pressing CURSOR lever if you 
intended the function to be on. 
7KLVPD\EHDVVLJQHGWRDQ\VZLWFKSRVLWLRQ6RPHPRGHOHUVDFFLGHQWDOO\DVVLJQ
IDLE-DOWN
 to one side of a switch 
and
THR-CUT
 to the other. There is no “normal” setting to start the engine. By default 
IDLE-DOWN
 is set to SWITCH C
center and down. This works well with 
THR-CUT
 also on SWITCH CGRZQ7KH6:,7&+XSLVQRUPDOÀLJKWVWDUWLQJ
FHQWHUIRUVORZHUPDQHXYHUVODQGLQJDQGGRZQWRFXWWKHHQJLQH,I\RXDVVLJQ
IDLE-DOWN
 or 
THR-CUT
 to the spring-
loaded
TRAINER
SWITCH F (10CA) or H (10CH), then use the trainer function, you may risk loss of throttle control 
or deadstick for your student. 
GOAL of EXAMPLE: STEPS: INPUTS:
Decrease the throttle setting at idle 
with the flip of a switch for spins and 
landings.
Open
BASIC
menu, then open 
IDLE-DOWN
function.
for 1 second.
 (If 
ADVANCE
, again.)
to
IDLE-DOWN
.
Activate the function.
to
MIX
. to
OFF
.
With THROTTLE STICK at idle, 
adjustthe rate until engine idles as 
desired.*
THROTTLE STICK.
to 
RATE
. until engine idles as 
desired.
Optional: change switch assignment.
Choose desired switch and position.**
to
SW
. to desired SWITCH.
to
POSI
. to desired position.
Close.
Where next?
THR-CUT
: see p. 41.
*Normally a value of 10- 20%. Secure the fuselage, engine running. Set the THROTTLE STICK to idle. Adjust the 
IDLE-DOWN
UDWHZKLOHÀLSSLQJWKH
switch ON and OFF until the desired idle is achieved. Be sure to throttle up periodically to allow the engine to “clean out” and idle reliably.
*Also LOGIC SW(Lsw1 to 3) may be assigned. Set up 
LOGIC SW
: See p. 38.