Four winns 348 vista Owner's Manual page 76

The.helm.and.cable.assembly.(if.applicable).should.
be.so.adjusted.that.the.steering.wheel.is.centered.with.
the.drives.or.rudders.in.the.straight.ahead.position..
There.should.be.an.equal.number.of.turns.to.port.and.
starboard.from.the.straight.ahead.position..If.adjust-
ment.becomes.necessary,.see.your.Four.Winns.
dealer.
All.cables,.helm.assemblies,.and.steering.connections.
should.be.periodically.lubricated.with.a.light,.water-
proof.grease.or.as.indicated.in.the.manufacturers.
information.provided.in.the.owner's.packet.
Inboard.boats.should.also.be.inspected.for.leakage.
around.the.rudder.port.seal..The.packing.nut(s).should.
be.tight.enough.to.prevent.leakage,.yet.loose.enough.
so.excessive.drag.is.not.placed.on.the.rudder.shafts..
Hard.steering.could.otherwise.result..If.the.leakage.
cannot.be.stopped.without.exerting.excessive.drag.on.
the.rudder.shaft,.replacement.of.the.seal.is.required.
To prevent water from entering into the boat,
always be sure the lock nuts are tightened
securely to prevent the packing nuts from
loosening.
Hydraulic.steering.systems.must.periodically.have.all.
air.purged.from.the.system..Review.the.information.
provided.by.the.hydraulic.steering.manufacturer.for.
proper specifications and details on system service
and.maintenance..
Steering Systems - Section G Owner's Manual Page