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32
10. TROUBLESHOOTING
CAUTION
All corrective actions should be carried out by suitable qualified person/s.
Problem
Check
Status
Cause
Remedy
Engine cranks
or
Starts hard
or
Does not Start
Fuel at
carburetor
No fuel at
carburetor
Fuel filter
blocked
Clean or replace
Fuel line blocked
or clogged
Clean or replace
Carburetor fault
Contact dealer
Fuel at cylinder
No fuel at
cylinder
Carburetor fault
Contact dealer
Exhaust wet with
fuel
Fuel mixture too
rich
Open choke.
Clean or replace
air filter.
Adjust
carburetor.
Contact dealer.
Spark at end of
Plug wire
No spark
Stop switch OFF
Turn switch ON
Electrical
problem
Contact dealer
Interlock switch
Contact dealer
Spark at plug
No spark
Spark gap
incorrect
Adjust to 0.6
–
0.8mm
Covered with
carbon
Clean or replace
Fouled with fuel
Clean or replace
Defective plug
Replace plug
Engine runs but
does not
accelerate
properly
Air filter
Air filter dirty
Normal wear
Clean or replace
Fuel filter
Fuel filter dirty
Contaminants in
fuel
Replace fuel
Fuel vent
Fuel vent
blocked
Clear vent
Clear or replace
Spark plug
Plug dirty or worn
Normal wear
Clean, adjust or
replace
Carburetor
Improper
adjustment
Vibration
Adjust
Cooling system
Excessive heat
Extended
operation in
dirty/dusty
locations
Clean and let
machine
cooldown
Spark arrestor
screen
Screen cracked
Normal wear
Replace
Engine doesn’t
crank
N/A
N/A
Internal engine
problem
Contact dealer
Summary of Contents for HY4BC31
Page 1: ...PETROL BRUSHCUTTER HY4BC31 User Manual...
Page 38: ...38...
Page 39: ...39...
Page 40: ...Imported Distributed by GENPOWER LTD Licensed by Hyundai Corporation Korea...