MAN048ING42
19 TROUBLESHOOTING
Belowaresomecommonfaults,theirprobablecausesandsuggestedremedy:
FAULTS PROBABLECAUSES REMEDY
Starter w ill not crank when
turningthekeytoRUNposition
Badconnectionsonstartercables. Checkandtighten
Badgrounding Checkconnectionsandtighten.
Interruptiononfuse Replace 5A strip fuse, after
checking for eventual reversal of
batterypolarity.
Damagedcables Replace
Batteryconnectionsloose Checkandtighten
Batterydischarged Rechargebattery
Starterfailure Overhaulstarter
Relayfailure Replacerelay
Electronicbox
Apply to Authorized Service
Centers
Starter cranks but engine won’t
start when turning the key in
RUNposition
Badcableconnections Checkconnectors
Bad H.T. coil connection or coil
failure
Check/Replace
BadH.T.coilgrounding Checkgrounding
Electronicboxorignitionfailure Apply to Authorized Service
Centers
Wetsparkplug Replace
Malfunctiononinductionsystem Check status and connection on
fuelpipe
Replace gaskets and membranes
oncarburetor
Check reed petals. Replace if
necessary
Enginestartsbutitstopsaftera
few seconds when turning the
keyinRUNposition
Badcableconnections Checkstatorconnector
Electronicboxorstarterfailure Apply to Authorized Service
Centers
Bad carburetor adjustment
(Iscrew)
Check carburetor adjustment (see
sect.5)
Thestartercranksalsoafterthe
engineisrunning.
Electronicboxfailure Apply to Authorized Service
Centers
Roughidle
Badcarburetoradjustment
(Lscrew)
Check carburetor adjustment (see
sect.5)
Dropinengineperformance
Badcompression Checkpiston
Badcarburetoradjustment Check carburetor adjustement
(seesect.5)
Insufficientgasflow Checkfuelflowlinesandinletfilter
Dirtyinletsilencer Checkandclean
Burningsmell,smoke
Overheatingofclutch Checkclutch(seesect.11)
ClutchengagesattoohighRPM
Excessivewearoffrictionmaterial Checkclutch(seesect.11)
Exhausttoonoisy
Flexibledamaged Checkandreplaceifnecessary
Springsdamagedorlost
Insulatingstrapdamagedorlost
Damagedexhaustheader
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