
ENGINE TROUBLESHOOTING
CONDITION
PROBABLE CAUSE
CORRECTIVE ACTION
Compression Lines
Loose spark plug
Tighten plus properly
Loose cylinder
head bolt
Damage gasket
Tighten bolt properly
Insufficient
compression
Replace gasket
Insufficient pulling
speed for starting rope
Pull rope sharply
Clogged fuel line
Clean fuel line with
dealer’s advice
Engine won’t start
Low engine output
Engine runs erratically
Foreign matter in
fuel tank
Pull rope sharply
No fuel in tank
Fuel shut-off not open
Supply fuel
Spark plug dirty with
carbon or wet with fuel
Remove carbon or wipe
spark plug with dry cloth
Improper spark
Damage spark plug
Replace plug
Faulty magneto
Consult dealer
Combustion chamber
supplied with fuel
Sufficient compression
Improper adjustment
of carburetor
Proper spark
Insufficient pulling
speed for starting rope
Pull rope sharply
Low
Refill
Check Oil level
Low Oil shutdown
Installed
Normal
Improper grade of
fuel used
Check fuel
Overloading
Overheating
Check the working
condition
No fuel supplied to
combustion chamber
Open valve
Fuel Systems
Electric Systems
11
Summary of Contents for PH1500
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