Futaba 4YF - Manual (Page 14)

13
INSTALLATION AND ADJUSTMENT
Adjustments
The operating direction, neutral position, and steering angle of each servo are
adjusted.
CAUTION
The basic linkage and adjustments of the fuselage conform to the fuse-
lage design drawings and kit instruction manual. Be sure that the center
of gravity is at the prescribed position.
Adjustment Procedure
Before making any adjustments, set
all the SERVO REVERSER switches
on the front of the transmitter to the
lower (NOR) position. (Switch the
switches with a small screwdriver,
etc.)
Turn on the transmitter and receiver
power switches and make the follow-
ing adjustments:
1
Check the direction of opera-
tion of each servo.
If a servo operates in the wrong direction,
switch its SERVO REVERSER switch. (The
direction of operation can be changed without
changing the linkage.)
*Note that the direction of the aileron servo is
easily mistaken. (Page 10)
2
Check the aileron, elevator,
and rudder neutral adjustment
and left-right (up-down) throw.
Check that when trimmed to the center, the
servo horn is perpendicular to the servo and
check the neutral position of the fuselage
control surfaces (aileron, elevator, rudder,
etc.). If the neutral position has changed, reset
it by adjusting the length of the rod with the
linkage rod adjuster.
When the throw is unsuitable (different from
steering angle specified by the kit instruction
manual), adjust it by changing the servo horn
and each control surface horn rod .
3
Check the engine throttle
(speed adjustment) linkage.
Change the servo horn installation position
and hole position so that the throttle is opened
fully when the throttle stick is set to HIGH
(forward) and is closed fully when the throttle
stick and throttle trim are set for maximum
slow (backward position and lower position,
respectively).
4
After all the linkages have
been connected, recheck the
operating direction, throw, etc.
*Before flight, adjust the aircraft in accor-
dance with the kit and engine instruction
manuals.
5
Fly the plane and trim each
servo.