This.troubleshooting.guide.has.been.provided.to.help.you.diagnose.and.solve.most.problems.that.you.may.encounter.with.your.SH.
engine..Most.problems.encountered.can.be.solved.by.carefully.following.the.problem-cause-solution.sections.below..If.you.cannot.solve.
the.problem.using.this.troubleshooting.guide,.please.feel.free.to.contact.us.using.the.information.below.
1). Engine.does.not.start.
A). Failed.glow.plug.
A). Replace.glow.plug.with.new.one
.
.
B). Glow.Starter.not.charged.and/or.faulty.
B). Fully.charge.glow.starter.and/or.replace
.
.
C). Idle.mixture.screw.set.too.lean.
C). Reset.idle.mixture.to.factory.setting.(Pg.3)
.
.
D). Old.or.contaminated.fuel.
D). Replace.with.new.fuel
E) Engine flooded with too much fuel
E) Remove glow plug and expel fuel from cylinder (Pg 2)
.
.
F). Air.leak.in.fuel.system.and/or.engine.
F). Replace.fuel.lines.and/or.tighten.all.engine.bolts
2). Engine.does.not.draw.fuel.
A). Air.leak.in.fuel.system.and/or.engine.
A). Replace.fuel.lines.and/or.tighten.all.engine.bolts
.
.
B). High.speed.needle.valve.fully.closed.
B). Reset.high.speed.needle.valve.to.factory.setting.(Pg.3)
.
.
C). Idle.mixture.screw.set.too.lean.
C). Reset.idle.mixture.to.factory.setting.(Pg.3)
.
.
D). Fuel.lines.kinked.
D). Check.and.straighten.fuel.lines
.
.
E). Defective.fuel.tank.
E). Replace.fuel.tank
3). Engine.does.not.transition.
A). Failed.and/or.wrong.type.glow.plug.
A). Replace.with.new.recommended.glow.plug.(Pg.2)
.
.
B). Old.and/or.wrong.type.fuel.
B). Replace.with.new.recommended.fuel
.
.
C). High.speed.needle.valve.set.too.rich.
C). Reset.high.speed.needle.valve.to.leaner.setting
.
.
D). Idle.mixture.set.too.lean.
D). Set.idle.mixture.richer
.
.
E). Idle.mixture.set.too.rich.
E). Set.idle.mixture.leaner
.
.
F). Air.leak.in.fuel.system.and/or.engine.
F). Replace.fuel.lines.and/or.tighten.all.engine.bolts
4). Engine.overheats.
A). Engine.running.too.lean.
A). Richen.high.speed.needle.valve
.
.
B). Body.shell.too.restrictive.
B). Open.larger.vents.in.body.to.allow.air.to.enter.and.exit
.
.
C). Wrong.type.of.fuel.used.
C). Use.fuel.recommended.only.for.R/C.cars
.
.
D). Engine.not.fully.broken.in.
D). Allow.engine.further.break-in.time
5). Engine.vibrates.excessively.
A). Engine.and/or.engine.mounts.loose.
A). Tighten.all.engine.and.engine.mounting.bolts
6). Engine.does.not.idle.down.
A). Idle.stop.screw.out.of.adjustment.
A). Adjust.idle.stop.screw.to.factory.setting.(Pg.2)
.
.
B). Engine.has.developed.an.air.leak.
B). Check.and.tighten.all.engine.screws
.
.
C). One.or.more.carburettor.O-ring.damaged.
C). Replace.carburettor.O-ring(s)
.
.
D). High.speed.needle.valve.set.too.lean.
D). Reset.high.speed.needle.valve.to.factory.setting.(Pg.3
PRoBlEM
CausE
soluTioN
Your.SH.engine.is.guaranteed.to.be.free.of.workmanship.and.component.error.for.a.period.of.90.days.starting.from.the.original.time.of.purchase..Warranty.
claims.must.be.acoompanied.by.an.itemized.sales.receipt.that.shows.the.purchase.date..Do.not.return.your.engine.to.the.place.of.purchase..They.are.
not.authorised.or.equipped.to.perform.warranty.work.on.SH.engines..When.requesting.warranty.service,.please.observe.the.following.guidelines:
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Always send the complete engine, including the carburettor. The engine must be removed from the vehicle first. Do not send your vehicle along with
the.engine..
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Include.a.note.detailing.the.problem.or.service.you.are.requesting..Service.cannot.be.provided.
without.this.information..Include.your.daytime.phone.number,.shipping.address.and/or.email.address.
in.the.event.we.need.more.details.pertaining.to.the.service.requested.
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If.your.engine.is.out.of.the.warranty.period.you.may.request.an.estimate.of.services.at.the.time.you.
return.your.engine.for.service..An.omission.of.this.request.implies.permission.for.Global.Services.
to.service.your.engine.at.our.discretion.
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Include.a.method.of.payment.for.any.service.charges.
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Send.the.engine.to.us.by.United.Parcel.Service,.Federal.Express.or.by.Insured.Mail..Postage.is.
nonrefundable..
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Send.your.package.to.the.address.at.right.
SH .21 XB AND XB-1 PRO COMPETITION OFF-ROAD ENGINE TROUBLESHOOTING GUIDE
WARRANTY AND SERVICE INFORMATION
In North America:
Global Services
18480 Bandilier Circle
Fountain Valley, CA 92708
Phone: (714) 963-0329
Fax: (714) 964-6236
Email: [email protected]
