28
TROUBLESHOOTING
Trouble
Possible Cause
Solution
Engine will
not start
• Low
fuel
• Stale
or
contaminated
fuel.
• Fuel
valve
is
in
the
“OFF”
position
• Loose
spark
plug
• Spark
plug
fouled
or
defective.
• Spark
plug
gap
is
incorrect
• Spark
plug
cap
is
not
attached
• Choke
is
not
in
the
“ON
“
(left)
position
for
starting
a
cold
engine.
• Problem
with
the
electrical
system
• Air
filter
dirty
• Valves
not
adjusted
properly
• Fill
with
fresh
fuel
• Have
a
service
center
flush
and
fill
with
fresh
fuel.
• Place
fuel
valve
in
the
“ON”
position.
• Tighten
spark
plug
• Clean
or
replace
plug.
• Gap
the
plug
• Attach
spark
plug
cap
• Place
choke
in
the
“ON”
(left)
position
• Take
to
a
service
center
for
repair
• Clean
or
replace
air
filter
• Take
to
a
service
center
for
repair
Engine
stalls or
runs
erratically
• Low
fuel
• Stale
or
contaminated
fuel
• Choke
is
left
in
the
“ON”
(left)
position
• Spark
plug
is
fouled
or
defective
• Spark
plug
gap
is
incorrect
• Spark
plug
cap
is
loose
• Carburetor
is
clogged
or
has
water
in
it
• Idle
is
not
adjusted
properly
• Problem
with
the
electrical
system
• Air
filter
dirty
• Valves
not
adjusted
properly
• Fill
with
fresh
fuel
• Have
a
service
center
flush
and
fill
with
fresh
fuel.
• Place
the
Choke
in
the
“OFF”
(right)
position.
• Clean
or
replace
plug
• Gap
the
plug
• Secure
the
spark
plug
cap
• Take
to
a
service
center
• Take
to
a
service
center
• Take
to
a
service
center
for
repair
• Clean
or
replace
air
filter
• Take
to
a
service
center
for
repair
