E-flite T-34 Mentor 25 ePTS RTF manual - Manual (Page 26)

26 E-flite T-34 Mentor ARF Assembly Manual
 4. Use the same 2.5mm hex wrench to check the four
screws that secure the motor to the firewall. Once the
motor screws are tight, reverse the previous steps to
install the cowling, propeller and spinner.
 5. If your aircraft does not track straight during taxi,
use the screw at the rudder servo and a #1 Phillips
screwdriver to correct the trim. Do not use the radio trim
for ground tracking. The rudder trim at the radio is only
used to trim the rudder in flight.