Hyundai HYBCF31 User Manual page 19

Repairs
Only an authorised service centre should repair the machine.
Problem Check
Fuel at the
carburettor
Fuel at the
cylinder
The engine
stalls, is cult
to start or does Sparks at
not start the spark
plug
electrodes
Sparks at
the spark
plug
Air
Fuel
Fuel vent
The engine
turns, but stalls
or does not Spark plug
accelerate
Carburettor
correctly
Cooling
system
Spark
suppressor
The engine
does not
engage
STORING
Transporting the machine in a car, please empty the fuel tank completely
Empty the fuel / oil
1. Place the machine on even and stable surface. Warm up the engine for several minutes and then
Condition
The fuel does not
arrive at the
carburettor
The fuel does not
arrive at the
cylinder
There is fuel in the
exhaust
There is no spark
There is no spark
Dirty air
Dirty fuel
Blocked fuel vent
Dirty or worn spark
plug
Bad adjustment
Excessive
Plate cracked,
contaminated or
perforated
N/A N/A
Hyundai HYBCF31 Brush Cutter & Grass Trimmer
Cause
Fuel r blocked
Fuel supply blocked
Carburettor
Carburettor
The fuel mixture is too
rich
Switch in o position
Electrical problem
Locked switch
Bad spacing of the
electrodes
Electrodes
contaminated
Electrodes
contaminated with
fuel
Defective spark plug
Fair wear and tear
Dirt or residue in the
fuel
Dirt or residue in the
fuel
Fair wear and tear
Vibration
Prolonged use in dirty
or dusty places
Fair wear and tear
Internal engine
problem
Page 19
Operator's Manual
Solution
Clean or replace
Clean or replace
Ask your distributor for
advice
Ask your distributor for
advice
Open the throttle valve
Clean or replace the air lter
Adjust the carburettor
Ask your distributor for
advice
Set the switch to the ON
position (Run)
Ask your distributor for
advice
Adjust the gap to 0,6-0,7
mm
Clean or replace
Clean or replace
Replace the spark plug
Clean or replace
Replace
Clean or replace
Clean, adjust or replace
Adjust
Clean
Replace
Ask your distributor for
advice
to avoid the leakage.
Rev 3