FUTABA 4GRS - Changing to Ratchet Type Throttle Stick

30
Before Using
Changing to Ratchet Type Throttle Stick
Changing the throttle stick from the self-centering type to ratchet type that stops at
an arbitrary position. (To make this modication, the optional ratchet plate must be
pu rchased.)
Adjustment
1
Remove the battery from the transmitter.
2
Using Phillips screwdriver, as shown in a fig-
ure, four screws are removed, and the rear
case is removed.
• Don't touch internal electronic components.
3
Remove the swing arm, spring and
spring hook from the throttle stick as
shown in the figure.
• Retain these parts in case the stick is to be
changed back to self-centering type later.
4
Install the ratchet plate to the throttle stick.
5
Fasten by twisting the retaining tabs with
needle-nosed pliers.
• The V section of the direc-
tion of a ratchet plate is
downward.
• If the ratchet action is too harsh, a small amount of ser-
vo gear grease should be applied to the ratchet teeth.
Ratchet
plate
Rear case
Spring
Swing
arm
Spring
hook
Ratchet
plate
(Option)
6
When the work is completed, re-attach the
rear case using a Phillips screwdriver.
• Take great care not to damage the wiring when re-
attaching the rear case.
• Foreign substances must not be allowed to get into
the interior of the case.
Caution
*If TH-STK is changed to F10 (see previous page), the now unnecessary brake function can be dis-
abled.
*If the throttle stick is not in the stop/idle position when the transmitter is switched "ON" an alarm will
sound. Ensure that the throttle stick is in the stop/idle position when switching "ON" - if the alarm
sounds the throttle output will default to stop/idle.
*The adjustment of the throttle range cannot be carried out if a ratchet is being used, only if the
throttle stick is self-centering.