Pro Boat PRB2900T - Manual (Page 13)

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Section 6: Maintenance
m .4..Carefully.pull.the.ferrule.away.from.
the.stuffing.tube..You.will.need.to.pull.at.
an.angle.to.clear.the.aluminum.strut.
m .5..Liberally.lubricate.the.entire.length.of.the.
flex.shaft.with.silicone.cable.grease.as.shown.
m .6..Carefully.re-install.the.flex.shaft.and.nylon.
bushing,.making.certain.that.you.correctly.
tighten.the.collet.nut..Next,.re-install.
the.drive.shaft.and.propeller.and.tighten.
setscrews.on.the.flats.of.the.drive.shaft.