Evolution Engines 52NX - Manual (Page 4)

Throttle Linkage
Install the throttle linkage and servo as per the instructions in the helicopter kit manual. The following illustration
is used as an example for the typical installation of the throttle arm and servo setup. Please note that we have
included markings on the throttle arm side of the carb body and throttle barrel. These markings correspond to “full
open, mid throttle, and fully closed carburetor positions. These marks are included to make your installation and
setup of the throttle mechanism even easier.
With low-throttle and mid-trim (idle position on transmitter), the throttle barrel should be open approximately 1mm,
giving a low rpm idle (see photo below). Adjust the length of the linkage until the throttle barrel is exactly 1mm open.
Check to be sure the servo is moving in the correct direction. Full throttle should open the throttle barrel fully, while
low throttle, low trim should completely close the throttle barrel. Reverse the servo throw if necessary. Refer to carb
body markings.

Throttle arm/Servo Link
Idle, closed to 1mm open