Troubleshooting - Hyundai HY4BC31 User Manual

10. TROUBLESHOOTING

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