21
NIIEGB
Troubleshooting
Problem Possible cause Troubleshooting
Engine won’t
start
Not enough petrol in the petrol
tank
Fill petrol
Incorrect starting sequence
Observe the instructions for starting
the engine (see “Operation”)
Spark plug connector (
16)
not plugged in correctly, sooty
spark plug
Plug in the spark plug connector
Clean, set or replace spark plug (see
“Cleaning and Servicing”)
Carburettor set incorrectly
Have the carburettor reset by a spe-
cialist workshop
Engine starts,
but the device
does not run at
full power
Dirty air lter (
10)
Replace the air lter (see “Cleaning
and Servicing”)
Carburettor set incorrectly
Have a specialist workshop reset the
carburettor
Engine sput-
ters, slows
down
Carburettor set incorrectly
Have a specialist workshop reset the
carburettor
Sooty spark plug ( 17)
Clean, set or replace spark plugs (see
“Cleaning and Servicing”)
Engine over-
heated
Ventilation holes (
18)
plugged
Clean the ventilation holes
Incorrect spark plug ( 17) Replace the spark plug
Not enough engine oil in the
engine
Top up engine oil (see “Initial start-up”)
Engine giving
off smoke
Dirty air lter (
10)
Replace the air lter (see “Cleaning
and Servicing”)
Not enough engine oil in the
engine
Top up engine oil (see “Initial start-up”)
Output not sat-
isfactory or en-
gine is difcult
to operate
Grass too short or high
Change the cutting height
(see “Setting the cutting height”)
Blade blunt see „Replacing blades“
Blade blocked by grass, grass
collection box full, ejector open-
ing plugged
Remove grass (see “Cleaning and
Servicing”)
Blade not rotat-
ing
Blade blocked by grass Remove grass
Blade not mounted correctly
Fit the blade correctly (see “Replacing
blades”)
Abnormal
sounds, clat-
tering or vibra-
tions
Blade not mounted correctly
see „Replacing blades“
Blade damaged
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