Robin FL-H7500 - Abrasion and damage; Oil and engine care

54
Actiontobedone
Trouble Workorder

Pointtobechecked
Withoutproblem Withproblem
６−５

Doesair-fuelmixtureleakfromthemating
facesoftheCARBURETOR,INSULATOR
etc.?
No
６−６
Investigatetheleakageandcorrectit.Repla
cethepacking,etc.withanewoneif
necessary. 
Fuel
６−６

DisassembletheCARBURETORtotestit

forthecomponentpartsbeingclogged
upand/ordeteriorated.
NotroubleintheCARBURETOR

６−７
CleantheinsideoftheCARBURETOR.Replacewearoutparts,sucha sthe
diaphragmwithnewones.ReplacetheCARBURETORwithanewoneif
necessary.
See P.４８〜４９
６−７

RemovetheROCKERCOVERtocheck
whetherthevalueclearanceis
within0.08-0.40(criterion:0.15).
Thevalveclearanceiswithinthe
criterion
６−８
Adjustthevalveclearanceat0.15. 
See Ｐ６１〜６２
６−８

TesttheCAMGEARforanyablationofthe
camtop.
Noablation
６−９
AnyablationoftheCAMtopneedsreplacingtheCAMGEARwithanewone.
See Ｐ３０〜３２(disassemble)、Ｐ４３〜４５(reassemble)
Valvetrain
６−９

IstheCAMGEARtimingright?(Thetiming
markoftheCAMGEARfaces
downverticallywhenthepistonis
atthetopdeadcenter.）
Yes
６−１０
CorrectthebadCAMGEARtiming.
See Ｐ４３〜４５
Insufficientcompression ６−１０

PulltheRECOILSTARTERtocheckfor
properwhiletheen
ginestops.Compression
inthecombustionchamberDoesthe
compressionseemtobeinsufficient?
No
６−１１
Compressedinsufficiently.Returntoworkorder４ −２togettheproper
compressioninthecombustionchamber.
PlugandIgnition ６−１１

DoesthePLUGignitesufficiently?
Yes
６−１２
Theplugignitesinsufficiently.Returntowork２ −３togetthesufficientspark.

Cooling ６−１２

Isthecoolingairpassagecloggedupatits
inletwithdart?Hastheengineover-
heated
consequently?
No
６−１３
Removethedarttogetthegoodcoolingairflow.
Pooraccelerationandoutputshortageofengine
Unknowncase ６−１３

Askaservicemanwithoutknowncauseoftheenginetrouble(pooraccelerationand/oroutputshortage).
７−１

Wasitconfirmedatthepre-operation
checkthattheengineoiltankwasfilled
withengineoilof220cc?
Yes
７−２
Iftheoillevelisover220ccdraintheoilfromtheengineoiltankorifless70cc
filltheoiltankwithengineoil,tothelevelof220cc.
See Ｐ６０
Oilcare
７−２

Istheengineoilconsumedover5ccan
hour?
No
Yes
７−３
Others ７−３

Does
theengineoilleakfromtheOILCAP,
etc.?
No
７−４
Performworkorders８ −１ ，８ −２and ８ −５whenafairylargeamountof
leakedoilisfoundaroundtheCAP,OIL. 
７−４

Disassemblethewholeengine.Testthe
CYLINDERboreformarkedablati
onand/or
damage.
Noablationordamaged
７−５
Markedablationand/ordamageneedsreplacingtheCYLINDERwithanewone.

７−５

TestthePISTONformarkedabrasion
and/ordamage. 
Noablationordamaged
７−６
Markedablationand/ordamageneedsreplacingthePISTONwithanewone.

Abrasionanddamage

７−６

TestthePISTONRINGformarked
abrasion.

MarkedabrasionneedsreplacingthePISTONRINGwithanewone.
See Ｐ３６(disassemble)、Ｐ３８(reassemble)
８−１

IstheCAP,OILtightened?
Yes
８−２
TightentheCAP,OIL. 
８−２

Wastheengineoilspilledontothe
equipmentatfeedingand/orchangingoil?

No
８−３
Becarefulnottospilltheengineoilaroundtheequipmentatfeedingand/or
changing.Ifspilled,wipeofftheequipment. Oilandenginecare

８−３

IstheinsideoftheAIRCLEANERcleaned
beforeoperation?
Yes
８−４
BesuretocleantheinsideoftheAIRCLEANERbeforeoperation.Theinsideof
theAIRCLEANEReasilygetsdirtywiththeengineoil.
See Ｐ６３
８−４

IsthePLATE,SEPARATORinthe
AIRCLEANERloose?
No
８−５
Ifloose:
? FastentheOILSEPARATORtothebottom,or
? ReplacetheOILSEPARATORwithanewone（６６７６５００６００）
８−５

Isthegasket(rubberpacking)
oftheCAP,OILstiff?
No
８−６
Replacethegasketwithanewone(０２１３２２９９８０)
Agasketusedforlongtimeislikelytogetstiff,whichcausesanoilleak.
８−６

Isthegasketusedwiththeoildrainbolt
placed,and/oristhereanycrackonit?
No
８−７
BecarefulnottoloosetheGASKET. 
Replacethegasketwithanewoneifcrackonit（００３７００８０００）
Enginecare
８−７

Isanyscrewintheengine
loose?
No
８−８
Tightenloosescrewsagain.
Workingsurroundings

８−８

Istheoperationbeingdoneinanunusual
placeand/orworkmethod?
No
８−９
Operatetheequipmentinanappropriatewayfortheoperationinanunusual
placeand/orworkmethod.Askaservicemanfortheappropriateway.
Oilleakfromengine
Unknowncause ８−９

Askaservicemanwithoutknowncauseoftheoilleak.
Oilcare ９−１

Wasitconfirmedatthepre-operation
check
thattheengineoiltankwasfilledwith
engineoilof220cc? 
Yes
９−２
Iftheoillevelisover220ccdraintheoilfromtheengineoiltankorifless70cc
filltheoiltankwithengineoil,tothelevelof220cc.
See Ｐ６０
Workingsurroundings

９−２

Istheoperationbeingdoneinanunusual
placeand/orworkmethod?
No
９−３
Operatetheequipmentinanappropriatewayfortheoperationinanunusual
placeand/orworkmethod.Askaservicemanfortheappropriateway.
AIRCLEANERcare

９−３

IstheinsideoftheAIRCLEANERcleaned
beforeoperation?
Yes
９−４
BesuretocleantheinsideoftheAIRCLEANERbeforeoperation.
TheinsideoftheAIRCLEANEReasilygetsdirtywiththeengineoil. 
See Ｐ６３
Others ９−４

Drivetheengineatabout7000rpmfor
about3minutes.Hasthewhitesmoke
disappeared?
Yes
No
９−５
Oilconsumption ９−５

Istheengineoilconsumedover5ccan
hour?
No
９−６
Performworkorders7-4orbelowuntiltheproblemoftheexcessoil
consumptioniscorrected.(Excessoilconsumptionmaycausecloudsofwhite
smoke.) 
Cloudsofwhitesmokecomeoutofmufflerduring
operation.
Unknowncause ９−６

Cloudsofwhitesmokedonotcomeoutduringoperationwiththeoilconsumptionat5ccorlessanhourandinnormaluse.Checkagainthattheequipment
hasbeeninoperationinanappropriateplaceandworkmethod.Askservicemanforfurtherinformation.

