40 TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
Ifthe engine malfunctions,carefullyexaminethe symptomsand the operatingcondiUons,and use thetable
belowas a guideto troubleshooting.
TROUBLESHOOTING GUIDE 41
Symptom
Engine won1
startoroutputis
low
Insufficient
compression
Remedy
K
T_lhten propedy
ProbablyCause
Faultypistons,cylinders,pistonrings,
and head gaskets
Faultyvalves
Loosesparkplugs
I_oo_ecylinderhead bolts
Nofuel infuel tank
Fuelvalve not in"ON"position
Blockedfueltllterortube
Blockedair vent intank cap
Faultycarburetor
Over-richfuel/airmixture
No fuel to Fillfuel tank
combustion Openfuel valve lever.
chamber Changefuelfilter orfuel tube
Cleanfuel tank cap
K
Spark plugs Openchoke.
fouled byfuel Rotateengine withspark plugs
removedto dischargeexcessfuel.
Cleansparkplugs.
Clean
K
Changefuel
No spark or
weak spark
Cloggedair cleaner
Faultycarburetor
Incorrectgrade/type offuel
Water in fuel
Faultysparkplugs
Faultyignitioncoils
Engineswitchleftin'_)FF" position
Replacesparkplugs
K
Turn engineswitchto '_TART"
posiUon
(See M)
51
To Next Page
Loading...
