IAME Parilla LEOPARD - Carburetor Adjustment Guide

MAN048ING23
5CARBURETORADJUSTMENTGUIDE
1T.O.
*
RICHLEAN
1 ¼ T.O. ¾ T.O.
1 ½ T.O.
*
T.O.=TURNSOPEN
Normallythecorrectsettingofthemixturescrewsisthefollowing:
§ L(closethescrewcompletelyandthenopen):1¼÷1½T.O.
§ H(closethescrewcompletelyandthenopen):1÷1¼T.O.
Basedonvariousfactorsasaltitude,ambienttemperatureetc.itmightbenecessarytoresetthecarburetortooptimize
theperformanceoftheengine.
ATTENTION:
 Neverleantoomuchasleanmixturewilloverheatengineandcauseseizure
 DonotforceHorLclosed.Itmaydamagetheprecisionmachinedorificeandrenderthecarbunserviceable.
 Theadjustmentofscrewmustbeperformedwithwarmengine.
(H)
AdjustT.O.fromclosedto
approximately
1¼.T.O.
(L)
AdjustT.O.fromclosedtoapproximately
1¼T.O
(I)
Close by further  1 ½  T.O.
after contact with throttle
lever.
Start the engine and warm it. If RPM too
highadjustIcounterclockwiseuntilclutchis
disengaged.
Turnc.c.w.untilmax.R.P.M.
is reached. Adjust further
fractionallyforrichidle.
Triggeraccelerator.
IfR.P.M.
decreases
(L)
Slowlyadjustclockwise
IfR.P.M.
increases
Continue to turn clockwise
until max.R.P.M. is reached.
Adjust c.c.w. fractionally for
richidle.
Triggeraccelerator.
Engine is now idling at max. attainable
R.P.M.orslightlyloweronrichside.
AdjustIcounterclockwiseuntil2000÷2500
R.P.M.isreached.
Recheck L screwforoptimumsetting
required.
Adjust H until best possible free speed is
reached. Turn clockwise for higher R.P.M.
CounterclockwiseforlowerR.P.M.
Adjust Lslightlyricherby
1/8÷¼T.O.
bad
acceleration
Return to idle and check acceleration for
quickresponseandsmoothpickup.
good
acceleration
Engineisreadytooperate.
(I) THROTTLE
SPEEDSCREW
(L ) LOWSPEEDFUELMIXTURE
(H) HIGHSPEEDFUELMIXTURE
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