ABNORMAL
COMBUSTION
backfire
afterflfe
run
on
etc
Improper
ignition
timing
Fuel
system
in
trouble
Defective
cylinder
head
etc
EXCESSIVE
OIL
CONSUMPTION
Oil
leakage
Excessive
oil
consumption
ENGINE
Improper
ignition
timing
Improper
heat
range
of
the
spark
plugs
Damaged
carburetor
or
manifold
gasket
backfire
afterflre
Defective
carburetor
jet
Improper
function
of
the
float
Uneven
idling
Improperly
adjusted
valve
clearance
Excess
carbon
in
the
combustion
chamber
Damaged
valve
spring
backfire
afterure
Loose
oil
drain
plug
Loose
or
damaged
oil
pan
gasket
Loose
or
damaged
chain
cover
gasket
Defective
oil
seals
in
front
and
rear
of
the
crankshaft
Loose
or
damaged
locker
cover
gasket
Improper
tightening
of
oil
filter
Loose
or
damaged
oil
pressure
switch
Worn
cylinder
and
piston
Improper
location
of
the
ring
split
or
reo
versed
assembly
ET
32
Adjust
the
ignition
timing
Use
specified
spark
plugs
Replace
them
with
new
ones
Disassemble
the
carburetor
and
check
it
Adjust
the
level
and
check
the
needle
valve
Adjust
Readjust
Remove
the
cylinder
head
and
remove
carbon
Replace
it
with
a
new
one
Tighten
it
Renew
the
gasket
or
tighten
it
Renew
the
gasket
or
tighten
it
Renew
the
oil
seals
Renew
the
gasket
or
tighten
it
Do
not
tighten
excessively
Renew
the
gasket
and
tighten
it
cor
rectly
Retighten
or
renew
the
oil
pressure
switch
Overhaul
the
cylinder
and
renew
the
piston
Reassemble
the
piston
rings
correctly
