21
TROUBLESHOOTING GUIDE
1. FAILURE TO START
symptom
probable cause
remedy
cylinder
compress
pressure
normal
spark
plug
spark
normal
fuel
system
abnormality
these is no fuel in tank
fuel filter obstruct
Add fuel in tank
Clean fuel filter
fuel
system
normal
fuel
fuel is too dirty
there is water in fuel
there is too much
mixture ratio is improper
instead fuel
instead fuel
tear down spark plug
and dry it
mixture peroration
fuel
system
normal
high
voltage
wire
spark
normal
spark
plug
spark plug fouled with oily
deposits
Spark plug insulation damage
Spark gap is too large or small
clean the oil deposits
replace spark plug
adjust spark gap 0.6-0.7mm
high
voltage
spark
abnormality
high voltage wire breach
or break off
coil looseness
replace or tighten
tighten
fuel
system
normal
Ignition
System
normal
compress
press
is
shortage
piston ring attrite
piston ring is broken
piston ring cementation
spark plug looseness
conjoint surface of the
cylinder and crank cast leak
replace a new
replace
eliminate
tighten
eliminate
Compress
normal
High voltage wire and spark
Plug contact badness
Stop switch failure or short
circuit
tighten the spark plug cap
repair or replace