Maintenance
T00963GB 61
8.13 Troubleshooting
Malfunction System Observation Cause
Cutting blade
does not start
turning
Clutch Engine runs Damage to clutch
Cutting blade
turns while
engine idles
Carburetor,
Clutch
Cutting blade
turns
Incorrect idle speed, clutch
stuck
Engine does
not start or only
with difficulty
Ignition
system
Ignition spark Malfunction in fuel supply
system, compression
system, mechanical
malfunction.
No ignition
spark
Switch on STOP, fault or
short-circuit in the wiring,
plug cap or spark plug
defective.
Fuel supply Fuel tank is
filled
Choke in wrong position,
carburetor defective,suction
head dirty, fuel line bent or
interrupted.
Compres-
sion system
Inside Cylinder base packing ring
defective, radial shaft
packings 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.
Insufficient
power
Carburetor Fuel tank is
filled Igntion
spark
Wrong carburetor
adjustment.
Engine does
not start or only
with difficulty
Fuel supply Fuel tank is
filled
Wrong idling adjustment,
suction head or carburetor
dirty. Tank venting defective,
fuel line interrupted, cable
defective, Stop switch
defective. Starting valve
dirty.
Low
performance
Serveral
systems
may be
involved
simultane-
ously
Engine is idling Air filter dirty, wrong
carburetor adjustment,
muffler clogged, exhaust
channel in cylinder clogged.
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