Hangar 9 P-51D 1.50 ARF Assembly Manual page 36

Section 11: Radio Installation

.Step 10
Repeat.Steps.5.through.7.for.connecting.the.rudder.
pushrod..The.pushrod.from.the.tail.wheel.passes..
through.the.connector..Center.the.tail.wheel,.then..
secure.the.tail.wheel.pushrod.in.the.connector.using.a.
3mm.x.6mm.screw.

.Step 11
Install.a.brass.connector.to.the.throttle.servo.arm...
Center.the.throttle.stick.and.trim.with.both.the.receiver.
and.transmitter.on..Install.the.throttle.servo.arm.in.the.
neutral.position.as.shown,.passing.the.throttle.pushrod.
wire.through.the.connector.
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
.Step 12
Move.the.throttle.stick.and.trim.to.low..Check.to.make.
sure.the.carburetor.will.move.to.the.low.position.when.
operating.the.servo..Install.two.3mm.x.6mm.screws.
to.secure.the.easy.connector.to.the.throttle.pushrod..
Check.the.movement.of.the.throttle.to.verify.there.is.no.
binding.at.either.low.or.high.throttle..If.there.is,.make.the.
necessary.adjustment.to.eliminate.any.binding..Install.the.
throttle.servo.arm.screw.when.complete.