Saito FG-14C User manual

Φ29.0mm 20.4mm 13.5cc
13”x8“~14”x6”
・Filterwithweight[G36-154] ・DurabletubeforGasoline(1m)[G36-155] ・Aluminumspinnernut[50-30]
・Tappetadjustingkit[30-161] ・Digitaltachometer[G17-167]
Bore Body:528g/Muffler:50g/Ignitionsystem:100g/Enginemount:124gStroke Disp.Weight(Approx.）
RPMRange Approx.1,900-9,500rpm Maxonground Approx.8,500-9,000rpm
Propeller SP-1orSP-2Plug
Optionalparts
4-strokeglow60-80classApplications
Batteryforignitionsystem
Specifications
FG-14CInstructionManual
2.Ignition
●Ignitionarrangement-Placethemainunitasfarfromother
electricaldevicesaspossible.
(1)Plugcord（meshedhightensioncord)
Inserttheplugcapoftheplugcorddeeplyintotheplug
attachedtothecylindertomakesureitwillnotcomeoff.
(2)Sensorcord
Connectwiththecordfromthesensorattachedtotheengine.
(3)Batterycord(black/redcord)
Useafullychargedbatterythathasadequatespec.(6-12V,more
than1000mAisrecommended).Betweenthebatteryandmain
unit,makesuretosetaheavydutyswitchwhosecapacityis
higherthan3A.
(4)Tachometercord
Connectthedigitaltachometer(Option).Otherwisetheconnec-
torisnormallyvacant.
※
Standard
accessories
6.Tappetadjustment
ThevalveclearanceshouldbecheckedandadjustedafterBreak-inandeveryafter2hourswhiletheengineiscold.Beforeadjusting
tappetgaps,tightenthescrewsaroundcylinderetc.
1.Removethesparkplugand
rockerarmcoversfromthe
cylinder.Thenturntheprop
CCWbyhandtoplacethe
pistonatTDCofcompression
stroke.
2.Loosenthelocknutand
adjustthegapbyhexagonal
wrenchuntilyougetthe
correctgap(belowpic)for
bothofintake&exhaust.
3.Oncethegapisset,tighten
thelocknutandattachthe
plugandcovers.
4.Turnthepropbyhandto
checkifthecompressionis
enough.Ifthegapislessthan
0,thevalveisalwaysopened
sightlyandlosecompression.
Thenadjustagain.
CorrectGap
Mustnotbeinserted
Closeto“0”withnolimit
Limitgauge
(0.1mm)
Loosenthelocknut
Adjustthegapturning
thesetscrew
TopDeadCenter
（bothvalvesareclosed) Tightenthelocknut
tofixthesetscrew
・Enginemountset 1set ・Limitgauge(0.1t)fortappetadjustment 1pc ・Plugwrench  1pc
・Hexagonalwrench 1set ・Spannerfortappetadjustinglocknut 1pc ・Mufflerset  1set
・Ignitionsystem(w/sensor) 1set ・Sparkplug[SP-2](Attachedtotheengine) 1pc ・Anti-looseningnut 1pc
SwitchCapacity:3A〜
Sensor Battery
Voltage:6-12V
Capacity:1,000mA〜:
Plugcap
(2)Sensorcord
(Black)
(1)Plugcord
Mainunit
(3)BatteryCord
(Red/Black)
(4)Tachometercord
(Brown/Red/Orange)
FuelTank FuelLevel
ToOutsideoftheplane
Ventline
fuelsupplytocarburetor
Fuelfillerline
Ventline
Gasoline-compatible
tankstopper
Gasoline-compatibletubing
Filterwithweight
Closeaspossible(within200mm)
Hollowout
Firewall
CCWtomake
rich
Main
Needle
Throttle
Fullopen
SAITOSEISAKUSHO,CO.,LTD.www.saito-mfg.com
22-7,3-chome,Tokagi,Ichikawa-shi,Chibaprefecture272-0024,JapanPhone:047-378-4156FAX:047-378-4155
Allspecificationsandmodelsaresubjecttochangewithoutnotice.
Note:
●Asitusesoil-mixedfuel,theplanemaysometimesgetdirtyfromtheexhaust.
●Useareliableandwell-balancedprop.Otherwiseitmaycauseanabnormalvibrationandcouldresultinaseriousaccident.
●Duringoperation,allenginescrewscanloosenduetometalheatexpansion.Checkandtightenoccasionally.
●Whentheexhaustvalvegetsdullbycarbonorsludgeespeciallyincoldatmosphere,removetherockercoverandapplysomeanti-rust
spraytotheexhaustvalvetohelpthevalvetomovesmoothly.
●Payattentiontothesurroundingssoasnottodisturbothersbynoiseandexhaust.
●Alwayskeepspectatorsstandbehindtheenginewhenoperatingtheengine.
●Asexhaustsmokeisharmful,becarefulnottobreatheinorotherwiseexposeyourselftoitsharmfuleffects.
●Payattentionnottotouchtherotatingpropellerwhenstartingengine,andmovetorearsideoftheaircraftoncetheengineisstarted.
●Allresponsibilitiesfortheuseoftheengine,andotherobligationsandresponsibilitiesbasedonlaws,regulations,etc.arebornebythe
purchaserandtheuser,andSAITOSEISAKUSHOCO.,LTD.isexemptfromanyresponsibilities.
Warranty:
●Ifthereisanydeficiencyfromthefactoryconcerningmanufacture,pleaseconsultwiththeshopordistributoryouboughtfrom.Our
companywillberesponsibleforrepair.However,anyfailureortroublecausedbyunnecessarydisassembly,modification,orotheruses
thanthoseprovidedintheinstructionmanualisnotsubjecttowarranty.
●Ignitionsystemissubjecttothewarrantyonlyforinitialfailure.Oncethesystemhasbeenactivatedsuccessfully,itwillnolongerbesubject
towarranty.
ver.July,2021
1.Fuel
●Thefuelismixtureofregulargasolineorhigh-octanegasolineandhigh-quality2-strokeengineoil.
●[Exampleofoilrecommendation]
・KlotzKL-200OriginalTechniplate・DeluxeMaterialsPowerModel2T-S・ENEOSRACINGSPECPRO-2T(SAITOSTANDARD)etc.
Ifsuchoilsarenotavailableinyourcountry,thenpleaseasktheofficialSAITOdistributorinyourcountryforanalternative. 
NEVERuse“cheapoil”designedforutilityenginesforbrushcutter,lawnmower,orchainsawetc.
●Besuretousethemixture“gasoline:oil=15~20:1”byvolumeratio.(Ex.1000mlofgasolineshouldbemixedwithmorethan50mlofoil).
●Duringthebreak-inprocess,use15:1mixedfueltoensurethebestlubricationforinitialrunning.
●Anydamagecausedbythefuelused,inwhichtheoilratioislowerthan20:1willnotbecoveredbywarranty.
●Donotusegasolinecontainingethanol.Itmaycausenotonlypowerlossbutalsocorrosioninsidetheengine.
3.Propeller
●RecommendedpropellerisAPC13x8~14x6whichbringsapprox.9,000rpm.Largersizeorgreaterpitchcancauseenginebrokendueto
overload.
●Useawell-balancedone.Neverusethepropellerthathasbeenscratchedordamagedevenifslightly.
●Asthepropelleriscompressedslightly,tightenthepropellernuteveryhourofoperation.
4.Break-inMOSTIMPORTANT!!
●Prop-recommendation:APC13x8.
●Use15:1fuel:oilratioforbreak-in.
●Nevermakethefuelmixtureleanduringbreak-in.Itcouldcauseseizureevenduringidlingor
low-speedrunning.
●Checkthattheslowneedleissettothereferenceposition.(Depth1.7~2.0mmfromthesurfaceof
thethrottlelever.)
●Beforestartingtheengine,openthemainneedleApprox.1+1/2turnsfromfullyclosed.
●Starttheengine(usingastarterisrecommendedforsafety).
●Soonafterstarting,Openthrottlegraduallyuptofull.InthemeantimeturnthemainneedleCCW.
ContinuetoturnthemainneedleCCWuntiltheRPMdeclines(toapprox4-5,000rpm)keeping
thethrottleopenedfully.
●Runinthisveryrichconditionfor1literoffuel.
●Now“initial”break-inisdone.
Slow High
Throttlelever
CCW→Rich
CC→Lean
Mainneedle
Slow(Idle)Needle
(Adjustwith⊖screwdriver)
CW→Lean
CCW→Rich
Approx.
1.7~2.0mm
SlowNeedle
5.Adjustmentofcarburetorafterinitialbreak-in.
◇Needlereferenceposition(Setafterinitialbreak-in)
●Starttheengineafteradjustingtheneedletothefollowingreferencevalue.
●Mainneedle：Approx.1+1/4~1+1/2turnsCCWfromfullyclosed
●Slowneedle：Approx.5+1/2turnsCW(Approx.2mm)fromthesurfaceofthethrottlelever.(Thenthrottlevalveshouldbefullyclosed)
●Actually,thebestpositionoftheneedlesvarydependingontheprop,
temperature,humidityandsoon.Pleaseadjustasnecessaryafter
observingtheengineperformanceduringflight.
◇Peakadjustment
●Afterstartingtheengine,warmupforapprox.30secondsatlowspeed.
●Achievethepeakatfullthrottle.
→TurnthemainneedleCWgraduallytothepositionwheretheRPMis
greatest(thepeak).ContinuingtoturntheneedleCWpastthepeak
couldleadtoseizuresoturnitslowlyandcarefully.IftheRPMsuddenly
decreasesafterpassingthepeak,instantlyturnthemainneedleCCW
toagainincreasetheRPM.Otherwiseitcoulddamagetheengine
seriously.
●OnceachievingpeakRPM,returnthethrottletolowspeed.Makeanoteofthepositionofmainneedleatthepeakatthattime.(Howmany
turnsyoudidCWbasedonthereferencevalue.)
◇SlowneedleAdjustment
●AfterachievingpeakRPM,nextisslowneedleadjustment.OpenthethrottlefromlowRPMtofullthrottlequickly.
●TurntheslowneedleCCWslightlyiftheenginehesitatesforamomentorstallsbeforetheenginereachesmaxRPMbecausethemixtureis
toolean.
●TurntheslowneedleCWslightlyiftheengineisslowtoreachpeakRPM(fullthrottleset)becausethemixtureistoorich.
●AdjusttheslowneedleasaboveuntiltheRPMfollowsthethrottlemovementsmoothly.Theimportantpointistoadjusttheslowneedle
AFTERthemainneedlehasbeenadjustedtoitspeak.
●Nowbreak-inatgroundlevelisdone.Adjusttappetsbythemethoddescribedlater.
◇Pre-flight/Flightadjustment
●Whentheslowneedleadjustmentisdone,checktheresponsebyrevvingupfromlowspeedtofullthrottlequicklyseveraltimes.
●OpenthethrottlefullyandturnthemainneedleCCWapprox.60〜90degreesfromthepeakposition.Thisistomakethefuelmixturericher
intheairwheretheRPMgethigherthanontheground.
●Afteralladjustmentsaremade,flyyouraircraftandfinetunetheengineaccordingtothesituation.Basicallytuningshouldbedonewiththe
mainneedle.Readjustmentoftheslowneedleisrarelyneededifthefirstadjustmentoftheslowneedlehasbeendonesuccessfully.
Voltage:6-12V,greaterthan1,000mA
※IfyouuseLi-Po,werecommendthespeclessthan2,500mAcapacityand
lessthan30Cdischargerate

No. Description Qty No. Description Qty
01 Cylinder 1
06 Piston 1
Valveset(In&Ex)
46-1,-2
07 Pistonpin 1
08 Pistonpinretainer 2
Valvespring&Keeper&Retainer
47-1,-2,48
09 Pistonring 1 48 Valveretainer(Cotter) 2
10 Connectingrod 1 49 Rockerarmcover 2
69 Intakemanifold(Intakepipe) 1
Cylinderscrewset
14-1,-2 74 Muffler 1
15 Crankcase 1
17 Rearcover(Backplate) 1
Mufflermanifoldset
75-1,80
19 Breathernipple 1 80 Mufflernut 2
20 Frontballbearing 1
82-1
Carburetorcomplete
1set
22 Rearballbearing 1
23 Crankshaft 1
Tapercollet&Driveflange
27-1,-2 85 Fullthrottleneedle 1
Propwasher&Nut
28-1,-2
Throttlebarrelassembly
82-1-5,-1-9,88B,89
Crankcasescrewset
31-1,-2,-3
Throttlelever
88B,90-1
89 Idleneedle 1
Enginegasketset
32-1,-2,-3,-4,-5,-6,-8
33 Camgearhousing 1
Carburetorscrew&springset
82-1-7,-1-8,-1-13,-1-16,-1-26,-1-28,90-1
35 Camgear 1
36A Camgearshaft 1
Carburetorgasketset
32-4,-5,-6,82-1-9,-1-14,-1-18,-1-20,-1-22,91-1
37 Steelwasherset 1set
38 Tappet 1
Enginemountset
95-1,-2,-3,-4,-5,-6
39 Pushrod 1 110 Antilooseningnut 1
152 Screw-pin(Fordriveflangesetting) 1
Pushrodcover&Rubberseal
40-1,-2,-3
41 Rockerarm 1
Electronicignitionsystem
153-1,-2,-3,-4,-5
Rockerarmscrew&Nut
42-1,42-2
43 Rockerarmpin 2
Pumpassembly
82-1-17,-1-18,-1-19,-1-20,-1-21,-1-22,-1-23
-1-24,-1-25,-1-26
14
27
28
31
32
40
42
1set
1ea.
1ea.
1set
1set
2ea.
2ea.
95
153
1set
87
88B
90
1
91
46 1set
47 2ea.
160
1set
1set
1set
1set
1set
1set
75
SAITOFG-14CPartsList
82-1-1,-1-2,-1-3,-1-4,-1-5,-1-7,-1-8,-1-9,
-1-13,-1-14,-1-15,-1-16,-1-17,-1-18,-1-19,
-1-20,-1-21,-1-22,-1-23,-1-24,-1-25,-1-26,
-1-27,-1-28,32-5,85,88B,89,90-1,91-1
FG-14C
Dimensional drawing
35.5 69.5 55
160
21.2 93
114.2
35
56
62.5
1528
9.528
50
55
35.5 69.5 46.5
151.5
8
M7x1
M12x1
82-1
82-1
-27
88B
90-1
91-1
82-1
-8
82-1
-1
82-1
-15
82-1
-27
82-1
-5 82-1
-2
82-1
-16
89
82-1
-9
82-1
-7
85 90-1
82-1
-4
82-1
-3
82-1
-14
82-1
-28
32-5
82-1
-23
82-1
-25
82-1
-26
82-1
-20
82-1
-21
82-1
-19
82-1
-24
82-1
-18
82-1
-13
82-1
-25
82-1
-24
82-1
-17
82-1
-22