Hangar 9 twist 150 ARF Assembly Manual page 19


.Step 4
Carefully.insert.the.stopper.assembly.into.the.fuel.tank..
Note.the.position.of.the.vent.tube;.it.must.be.up.at.the.top.
portion.of.the.fuel.tank.to.function.properly..Tighten.the.
M3.x.20.screw.carefully—do.not.over-tighten.

.Step 5
Use.a.rotary.tool.to.remove.material.from.the.inside.of.the.
engine.mount.to.fit.your.particular.engine.
Section 3B: Gasoline Engine Installation

.Step 6
Position.the.engine.on.the.engine.mount.so.the.drive.
washer.is.roughly.1/8".(3mm).forward.of.the.sides.of.the.
fuselage..Mark.the.location.of.the.engine.mounting.bolts.
using.a.felt-tipped.pen.
Note:.The.engine.must.be.far.enough.
forward.so.when.the.propeller.and.spinner.
are.installed,.they.don't.bind.on.the.front.
of.the.fuselage..A.quick.check.is.to.slip.the.
spinner.backplate.on.and.check.for.clearance.

.Step 7
Use.a.5/32".(4mm).drill.bit.to.drill.the.holes.in.the..
engine.mount.
Hint:.Remove.the.mounts.and.use.
a.drill.press.to.get.the.holes.in.the.
mount.perpendicular.to.the.mount.
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