23
Troubleshooting
Problem
Engine does not start
Possible Cause
OPC cable not adjusted
correctly
Fuel tank is empty
Stale fuel
Air filter element is dirty
Spark plug is loose
Spark plug cap loose or
disconnected
Possible Corrective Action
Adjust OPC cable
Fill fuel tank
Drain carburetor float bowl
Clean or replace air filter
Tighten spark plug
Correctly fit the sark plug cap
Spark plug faulty
Spark plug gap is incorrect
Carburetor is flooded with fuel
Faulty ignition module
Set plug gap to 0.7-0.8mm or
replace spark plug
Remove the air filter and pull
starter rope until carburetor
clears
Contact the service dealer
Engine difficult to start or loses
power
Dirt, water or stale fuel in tank
Vent hole in fuel tank filler cap is
clogged
Air filter element is dirty
Drain fuel and clean tank. Fill
with clean, fresh fuel
Clean or replace fuel tank cap
Clean or replace air filter
element
Engine operates erratically
Spark plug is defective
Spark plug gap is incorrect
Air filter element is dirty
Fit new, correctly gapped spark
plug
Set plug to 0.7-0.8mm
Clean or replace air filter
element
Engine idles poorly
Air filter element is dirty
Air slots in engine are blocked
Cooling fins and air passages
under engine housing are
blocked
Clean or replace air filter
element
Remove debris from slots
Remove debris from cooling
fins and passages
Engine skips at high speed
Spark plug electrode gap is
incorrect
Set plug to 0.7-0.8mm
Engine overheating
Cooling airflow is restricted
Incorrect spark plug
Remove any debris from slots
in shroud, blower housing, air
passages
Fit new spark plug
Mower vibrates abnormally
DO
NOT
use the machine until
vibration issue has been fixed
Cutting assembly is loose
Blade/cutting assembly is
unbalanced
Tighten blade
Take to a service dealer
NOTE -
Where necessary, all corrective actions should be carried out by suitably qualified persons. If the
starter rope becomes disconnected from the rope guide on handle, disconnect the spark plug cap. Pull the
starter rope out from engine slowly and re-engage in guide. Re connect spark plug cap.
Summary of Contents for HYM430SP
Page 1: ...PETROL LAWNMOWER HYM430SP HYM460SP HYM510SP Instruction Manual...
Page 38: ...Notes 38...
Page 39: ...39 Notes...
Page 40: ...40 Notes...
Page 41: ...41 Notes...