Adjustments - FUTABA 4VF-FM Instruction Manual

The operating direction, neutral position, and steering angle of each servo are ad-
justed.
CAUTION
The basic linkage and adjustments of the fuselage conform to the fuselage
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 11)
SERVO REVERSER
REV.
NOR.
AIL. ELE.
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, el-
evator, rudder, etc.). If the neutral posi-

ADJUSTMENTS

THR. RUD.
tion has changed, reset it by adjusting the
length of the rod with the linkage rod ad-
juster.
When the throw is unsuitable (different
from steering angle specified by the kit in-
struction 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 posi-
tion 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 po-
sition 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.
Perpendicular
Rod