GB
Troubleshooting
Problem
Engine won't
start
Engine's idling
speed too high
Engine outputs
less than maxi-
mum
Excessive ex-
haust fumes/
smoke
Blades get hot
82
Possible cause
No fuel
Wrong starting sequence
Flooded engine
Spark plug clogged, wrong spark
gap
Spark plug connection, ignition
cable damaged
Carburettor/nozzles dirty, fuel-air
mixture badly set
Fuel filter clogged
Cold engine
Spark plug clogged, wrong spark
gap
Carburettor/nozzles dirty, fuel-air
mixture badly set
Wrong fuel mixture
O-ring in crankcase leaks
Cylinder, piston rings worn out
Spark failure
Fuel-air mixture badly set
Wrong fuel mixture
Blunt blades
Notches in blade
Excessive friction due to missing
lubrication
Corrective action
Fill up
Observe machine starting instruc-
tions in this booklet
Reduce throttle, restart several
times, remove, clean and dry
spark plug as appropriate
Clean, adjust or replace spark
plug
Replace
Take in carburettor and have it
cleaned and adjusted
Replace or clean fuel filter
Allow to warm up slowly
Clean, adjust or replace spark
plug
Take in carburettor and have it
cleaned and adjusted
Fill up according to instructions
Take in to have fault removed
Take in to have carburettor ad-
justed
Fill up according to instructions
Have blade bar sharpened
Have blade bar checked
Lubricate blade bar