Trouble
s hooting
Malfunction
Chain does not run
Engine does not
start or only with
difficulty
Warm start
difficulties
Engine
s tarts,
b ut
dies immediately
Insufficient
p ower
No
c hain
l ubrication
44
System
Observation
Chain
b rake
Engine runs
Ignition system
Ignition spark
No ignition spark
Fuel supply
Fuel
t ank
i s
fi lled
Compression
Inside
system
Outside
Mechanical
Starter does not engage
malfunction
Carburetor
Fuel
t ank
i s
fi lled
Ignition spark
Fuel supply
Fuel
t ank
i s
fi lled
Several systems
Engine is idling
may
b e
i nvolved
simultaneously
Oil
t ank/pump
No oil on the chain
Cause
Chain
b rake
a ctuated.
Malfunction in fuel supply system, compression
system, mechanical malfunction.
STOP
s witch
i n
p osition,
f ault
o r
s hort-circuit
in the wiring, Spark plug cap or spark plug
defective
Combination
s witch
i n
C hoke
p osition,
c arburetor
defective,
s uction
h ead
d irty,
f uel
l ine
b ent
o r
interrupted.
Cylinder
b ase
p acking
r ing
d efective,
r adial
shaft packings defective, cylinder or piston rings
defective
Spark plug does not seal.
Spring
i n
s tarter
b roken,
b roken
p arts
i nside
t he
engine.
Wrong
c arburetor
a djustment.
Wrong
i dling
a djustment,
s uction
h ead
o r
carburetor
d irty.
Tank venting defective, fuel line interrupted,
cable
d efective,
C ombination
s witch
d efective
Air
fi lter
d irty,
w rong
c arburetor
a djustment,
muffler
c logged,
e xhaust
c hannel
i n
c ylinder
clogged, spark arrester screen clogged.
Oil
t ank
e mpty.
Oil
g uide
g roove
d irty.
Oil-pump
a djusting
s crew
i ncorrectly
a djusted.