19
7. TROUBLESHOOTING
Malfunction
System
Observation
Cause
Cutting disc does
not start turning
Clutch
Engine runs
Damage to clutch
Cutting disc runs in
idle
Carburetor, clutch
V-belt
Cutting disc
runs
Incorrect idle speed, blocked clutch belt has
insufficient tension, V-belt is worn
Engine does not
start or only with
difficulty
Ignition system
Ignition spark
Malfunction in fuel supply system, compression
system, mechanical malfunction.
No ignition
spark
Fault or short-circuit in the wiring, plug cap or
spark plug defective,
Fuel supply
Fuel lank is
filled
Choke in wrong position, carburetor defective,
suction head dirty, fuel line bent or interrupted.
Compression system
Inside
Cylinder base packing ring defective, radial
shaft packing defective, cylinder or piston rings
defective
Outside
Spark plug does not seal.
Mechanical
malfunction
Starter does
not engage
Spring in starter broken, broken parts Inside the
engine.
Warm start
difficulties
Carburetor
Fuel tank is
filled
Wrong carburetor adjustment, Ignition spark
Engine starts, but
dies immediately
Fuel supply
Fuel tank Is
filled
Wrong Idling adjustment, suction head or
carburetor dirty.
Tank venting defective, fuel line Interrupted,
cable detective, switch defective.
Decompression valve dirty
Insufficient power
Several systems may
be Involved
simultaneously
Engine is idling
Filtre à air sale, mauvais réglage du
carburateur, silencieux bouché, canal
d'échappement dans le cylindre bouché, écran
pare-étincelles bouché.
