GENERALINFORMATION
DFUEL
Theengineisoftwo-stroketype,designedtorunonoil~premixedfuel(whentheoilpumpisremoved).
Fuelspecification:Racinggasolineoraviationgasolinemixedwithoilintheratioof30: 1.
Oilspecification: Motul700E,ShellSportsSX(synthetic).
2)COOLANT
Coolantspecification:Softdrinkablewater
Whenfillingthecoolingsystemwithwater,followtheproceduresbelow.
(1)
Removetheradiatorcapandpourwaterthroughthefillerneck.
(2)Bleedairfromthewaterpump.
(3)Holdingthehandlebars,leanthemotorcycletwoorthreetimestoexpelairtrappedinthesystem.
(4)Squeezeeachradiatorhosetodriveairaway.
(5)Loosentheairbleedboltonthesideofradiatortoremoveair.
(6)Repeattheprocedures(1)through(5)aboveuntilthewaterleverbecomesconstant.
(7)Fittheradiatorcapsecurely.
Aftertheaboveproceduresarecompleted,startandwarmuptheengine,thencheckthatthereisno
waterisnowaterleakage.Stoptheengine,allowtocoolandcheckthewaterlevelagain.
•Duringtheraceinterval,drainthesystemcompletelytoavoidcorrosionorotherharmfulproblemsin
theradiatorandenginewaterjacket.
•Thewatertemperatureforbestengineoperationis55
—
65°C.
Whenmorethan70°C,considerablepowerlosswillresult.
3)WARMINGUP
Alwayswarmuptheenginebeforerunninginthefollowingmanner:
(1)
For
1 —
2 minutes,revtheengineupanddownwithintherangeof5,000
—
6,000rpm.
(2) Foranother1
—
2 minutes,revtheengineupanddownlimitingthehighestrevolutionto8,000rpm.
(3)Whenthewatertemperaturereachesapproximately65°C,testdriveforapproximately50m and
checktheoperationofgearshifting,clutch,brakeetcifanappropriatewarmingupsiteisavailable.
(Ifthewatertemperaturerisestomorethan90°C,checkthesystemimmediatelybecausetheremay
beproblemslikeleakage,insufficientwateretc.)
4)BREAKIN
(1)Newmachine
Keeptheenginespeedasconstantaspossibleduringrunning.Toshiftupordown,keeptothefollowing
rpmlimits.Useashighgearasispracticallypossible.
a.First,run2
—
3 timesinthetracklimitingtheenginespeedbelow8,000rpm.
b.Stopandcheckforpartslooseness,leakageetc.
c.Runapproximately30kmlimitingtheenginespeedbelow8,000rpm.
d.
Runapproximately20kmlimitingtheenginespeedbelow9,000rpm.
e.Runapproximately20kmlimitingtheenginespeedbelow10,000rpm.
Thetotalofrunningdistanceisapproximately75km.
CAUTION:
Duringbreakinginperiod,runtheengineonslightlyrichcarburetion.
(2)Whenpartsreplaced
•Ifthecylinderorcrankshaftisreplaced,thesamebreakinasnewmachineisrequired(approximately
75km).
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