Subaru EH72-2D, Информация о сервисе

Страница: 13 / 16

-.10.-
FLOAT SYSTEM
The.float.system.is.consists.of.a.float.and.a.needle.valve,.and.maintains.a.constant.fuel.level.
during.engine.operation ..
The.fuel.flows.from.the.fuel.tank.into.the.float.chamber.through.needle.valve ..
When.the.fuel.rises.to.a.specific.level,.the.float.rises,.and.when.its.buoyancy.and.fuel.pressure.are.
balanced,.the.needle.valve.closes.to.shut.off.the.fuel,.thereby.keeping.the.fuel.at.the.predetermined.level ..
Air.vent.hole.of.float.chamber.is.provided.around.the.carburetor.air.hone.and.the.fuel.vapor.is.
sucked.into.the.combustion.chamber ..This.closed.system.has.unti-dust.feature .
PILOT SYSTEM
The.pilot.system.feeds.the.fuel.to.the.engine.during.idling.and.low-speed.operation .
The.fuel.is.fed.through.the.main.jet.to.the.pilot.jet,.where.it.is.metered,.and.mixed.with.the.air.
metered.by.the.pilot.air.jet .
The.fuel-air.mixture.is.fed.to.the.engine.through.the.pilot.outlet.and.the.by-pass .
At.idling.speed,.the.fuel.is.mainly.fed.from.the.pilot.outlet ..
MAIN SYSTEM
The.main.system.feeds.the.fuel.to.the.engine.at.medium-and.high-speed.operation .
The.fuel.is.metered.by.the.main.jet.and.fed.to.the.main.nozzle ..The.air.metered.by.the.main.
air.jet.is.mixed.with.the.fuel.through.the.emulsion.tube,.and.the.mixture.is.atomized.out.of.the.
main.bore ..It.is.mixed.again.with.the.air.taken.through.the.air.cleaner.into.an.optimum.fuel-air.
mixture,.which.is.supplied.to.the.engine ..
CHOKE
The.choke.is.used.for.easy.start.when.engine.is.cold .
When.the.starter.is.operated.with.a.choke.valve.fully.closed,.the.negative.pressure.applied.to.
the.main.nozzle.increases.and.draws.much.fuel.accordingly;.thus.easily.start.up.the.engine ..
FUEL CUT VALVE
Fuel.cut.valve,.operated.with.starter.key.switch,.is.equipped.with.main.system.of.carburetor.for.
preventing.engine.running.on.and.after.burning ..
When.the.key.switch.is.on,.the.valve.is.activated.and.the.plunger.is.pulled.in.to.open.the.main.jet .
When.the.key.switch.is.off,.the.power.source.to.the.valve.is.off ..The.plunger.is.pushed.out.by.
the.return.spring.and.stop.the.fuel.flow.of.main.jet ..
SOLENOID (for Fuel Cut Off of Carburetor)
. ● .Measure.the.resistance.between.the.two.terminals .
(Ω.±10%.when.20˚C)
Resistance
32.Ω
. ● .Check.the.operation.of.the.solenoid.independently .
Check.operation.at.the.terminals ..(Applied.voltage.:.9V)
Faulty.operation..
→
..Replace.the.solenoid
. ●
.As.the.solenoid.is.a.constant.pull-in.type.when.the.engine.is.running,.If.the.battery’s.power.is.
low,.it.may.not.work.when.starting.the.engine.because.all.the.available.electricity.is.occupied.
by.the.starting.motor ...
.→.Charge.or.replace.the.battery .