S p a r k a t
plug
No spark
at plug
Spark gap incorrect
Covered with carbon
Fouled with fuel
Spark plug defective
Adjust 0.65mm
Clean or replace
Clean or replace
Replace plug
Engine
does not
crank
Internal engine
problem
See your dealer
E n g i n e
runs
Dies or accelerates poorly
Air filter dirty
Fuel filter dirty
F u e l v e n t
p l u g g e d S p a r k
plug
Carburetor
Cooling system
plugged
E x h a u s t p o r t /
spark
arrestor screen
plugged
Clean or replace
Replace
Replace
Clean and adjust/
replace
Adjust
Clean
Clean
E n g i n e
R u n s
properly
Blower does not work,
is weak or uneven
Blower Pipe
clogged,
l o o s e o r
damaged
Unclog
Tighten
Replace
-22-
（
）
flammable
（
）
flame or spark.
（
）
