50
TROUBLE SHOOTING 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 obstructed
add fuel in tank
clean fuel filter
fuel
system
normal
fuel
fuel is too dirty
there is water in fuel
there is too much
fuel in cylinder
mixture ratio is
improper
replace fuel
replace fuel
take down spark plug
and dry it
mixture proration
fuel
system
normal
high
voltage
wire
spark
normal
park
plug
spark plug fouled with oily
deposits
spark plug insulation
damage
spark gap is too large or
small
clean the oily deposits
replace spark plug
adjust spark gap
0.6-0.7mm
high
voltage
wire
spark
abnormality
high voltage wire breach
or break off
coil looseness
replace or tighten
tighten
fuel
system
normal
Ignition
system
normal
compression
pressure
is
inadequate
piston ring attrite
piston ring is broken
piston ring cementation
spark plug looseness
conjoint surface of the
cylinder and crank cass
leak
replace a new
replace
eliminate
tighten
eliminate
compression
normal
high voltage wire and
spark plug contact poor
stop switch failure or short
circuit
tighten the spark plug cap
repair or replace