Kyosho Gs21r User manual

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Before

commencing

assembly, please read these

instructions

thoroughly.

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INSTRUCTION

SHEE

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No.74721

THROTILEVALVE ADJUSTMENT SCREW

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OSH0

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KYOSHO No.

96421

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1

eE

OUIPME

NT

NE

CE

SS

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FOR S

TARTIN

G

THE·EN61N

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"(

N

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NCttiOI!!O)

1. Fuel for RIC models:

Use glowfuel (available in

all

RIC hobby shops).

(Handy Fuel from KYOSHO No.6412)

(KYOSHO

PRO

Spec Fuel RACING No. 73801)

(KYOSHO PRO Spec Fuel BUGGYNo. 73802)

2. Glow Plug:

Use a high performance gl

ow

plug.

(O.S. I

AS,

AS

; ENYAI No.4, No.5)

&

Warning

Never

use gasoline, kerosene

or

alcohol instead

of

glo

wfuel!

This may causeflresl

3. Booster Cord

or

One-touch Gl

ow

Plug Heater, and

Batteries:

Used lorheatingand elec1rtlying

the

glowplug.

(BatteryHolder Set from-KYOSHO No. FD-30)

4. Plug Wrench:

For removalswhen examining orexchanging the glowplug.

(lockingJig&

Wrench

Set

from

KYOSHO

No.

80312)

5. Fuel Filter:

(Fuel FilterI

rom

KYOSHO No. 1876)

A fuel bonle comes in very handy for quickandneat

·refillingsof the tank.

(Quick-Fill Fuel BoHle250cc

ISOOcc

from KYOSHO

No. 96421196422)

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2

eENGINE

MOUNTING

Theposaion formounting theengine

depends

largely

on

the

model itseH! Followtheinstruc;tion manualsupplied with the

model tomounttheengine propetly.

e ENGINE STARTING & BREAK-IN

Adjust the needle valveand air/luelmixture adjustment

sc

rew

to

their standardpositionasfollows:

G)

N

eed

le

Va

l

ve

2

and

1/2

tums

un-

S<:re

wed

ffomclosed

poshlon

.

® Air/Fuel Mixture

Adjustment

Hold ligllt

so~



wi

l

noc

rotate.

Alr

/FuslMix

ture

Adj

ustment

Screw

Adjustmentsm - ® maystighly vary according to the type

of

glow plugandgl

ow

fuet.

~

Warn

in

g

As

long

as

the

engine

Is

hot

,

avoid

touch·

ing

anything

exc

-

ept

the

needle

valve!

tf

disregarding

this

wa

rning

,

you

get

burned!

eEN

GINE STARTING & BREAK-IN

Proceed

as

follows

when

starting

and

breal<ing theengine

in:

1. Ma

ke

suretheneedle valve is unscrewed2 and

314

turns

from closedposition.

2. Fill fuel intothe tank.

Mo

ve

the thron.

te

leverto the high

position,prime the engine(push the choke bunon2 - 3

times

or

put 2 - 3 dropsof fuel directly Into thecarburetor)

and move the thro!Ue leverback 10 the slow thro«le

pos~

i

o

n

.

CAUTION: care

full

y

check

If

no

dirt

or

deposits

clog

the

tank!

3. Attach the booster

co

rd

or

one·touch glowplugheat

er

to the

engineIn order to electrily t

he

gl

ow

plug.

4. Quickly

puft

therecoil starterrope (statlerknob) several

times.

Only

pull

out

20

-30cmofcord.

Caution

:

Be

careful

not

to

pull

out

more

than

SOcm

of

cord

because

you

may

tear

It

and

the

spring

Insi

de

the

r1000il

starter!

5. Oncethe engine is started, wah 5 -

10

secondsbefore

detachingtheboostercord

or

one-touch glow plug heater.

6. Run the engine another2 -

3tanks

and make sureyou

do

n

ot

apply full lhronte. Also allerwards, do not increase RPM

abruptly! Tighten

th

e needle valve by

t/8

turns

an

dcontinue

to run

lhe

engine, handling

il

genlly.

Caution:

After

each

tank

,

allow

the

engine

to

cool

off

naturally!

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3

7.

Du

ri

ng

the break-in, adjust the idle

rpm

witht

he

throHie

valve adjustment screw. If rotatingit clockwise (right), Id

le

rpm

increase. Idle rpm

a.re

ha

lfway between

rpm

when the

c

lut

ch engages

and

rpm

when the engine stalls. Setidle

rpm

towa

rds

th

e l

owe

r e

nd

if

possible.

Tigh

ten the

throttle valve

adjustment

screw

to

in

c

rease

rpm

•

Unscrew

the

throttle

valve

adjustment scr

ew

to

decrease

rpm

.

1>

Narr

ow

Ojlflnlng

Thfo«

IG

Valve

Ad

just

men'

Sctew

8.

Now

adjusttheneedle

va

lv

e.

Its

optimum

seH

i

ng

is when

t

he

engi

ne

performs best andthe throHie control is in the

high position. I! tighte

ni

ng

it

further,

eng

i

ne

RPM will drop,

l

ead

i

ng

to enginedamage.

Once

you have fou

nd

theneedle

valve'soptimumseHing,

u nsc

rew

~

10 -

20

'

for

normal

operation.

9. On

ce

the setti

ng

for normaloperation

is

do

ne, set the

air/f

ue

l mixt

ur

e adjustmentscrew. Stop the

ca

r and move

thethrottle

con

trol from the idle position tohigh

pos

ition.

If

f

umes

exiting the mufflerare

wMe

and rpm increaseslowly,

fuel is t

oo

abundantduringthe idle. To lean the mix!ure,

ro

t

at

e the air

llue

t mixtu

re

ad

jus

tme

nt

screwclockwise(right),

eachtime

30

-40

'.

In theoppositecase,

~

the enginestalls,

fumes

are

no

t visible and rpm increase slowly, fuel is

no

t

abundant enough. Thistime. ri

che

n themixture and rotate

the

sc

rew anticlockwise (left),

eac

h ti

me

30

-

40

'.

No

te

:

The

optimum

setting

may

vary

according

to

the

kind

of

glow

plug

and

glow

fuel

used!

Note

:

The

optimum

setting

may

vary

due

to

changing

weather

conditions!

The

best

pos

i

tion

of

Needle--Valve

must

be

opened

the

Needle--Valve

more

than

2

turns

from

the

fully

closed

posit

i

on.

Warn

ing!

Clos

ing

the

Needle-

Valve

too

much

carries

the

risk

of

seriously

damaging

the

engine.

Caution:

Do

these

adjustments

(from

step

8)

only

while

run

ning

your

car!

The

engine

will

be

damaged

If

the

wheels

are

aloof

from

ground

and

spinning

free

.

eMAINTENANCE

*After running t

he

e

ng

i

ne

, draw o

ut

any leftover luel from the

luel tank.

*Draw

out

fuel from inside the engi

ne

as

well. Fu

el

that

remains inside the e

ng

ine,

may

clog the engine a

nd

make

it

difficuh to start.

*Rem

ove any dirt from the outside

of

theengi

ne

using

methanol and a brush.

Do

no

t allowfire

or

a

ny

excess

iv

e

h

ea

t source

lo

come

i

nt

o

co

nt

actwithmethanol which is

high

ly

inflammable! This

may

ca

use fires!

&

Warn

in

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Never

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Kyosho GS21R User manual

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