13. Troubleshooting
If the engine is defective, perform diagnosis by referring to the following table and then taking the
appropriate action.
Safety switch is not in the [start up]
Put the safety switch to the [start up]
position.
position.
When cooling the engine, put the choke
bar in the position.
Inspect fuel tank, remove impure deposits
or water.
Remove the fuel valve strainer and clean
out any sediment deposited inside the cap
together with any other attached dirt.
Remove foreign objects, inspect
fastening bands, replace damaged
parts with new ones.
In cold weather, oil becomes thick, and Use the correct oil depending on the
and the engine rotation is sluggish
outside temperature.
Ignition coil or unit is defective.
Replace the ignition coil or unit.
Inspect the gap between spark plug
electrodes and adjust.
Replace with a new spark plug.
Fuel shortage.
Refuel the machine.
Clogged air filter.
Clean the element.
Poor quality fuel.
Replace with good quality fuel.
Return the choke bar completely. Put it
in the position.
Cooling system is clogged.
Clean around the recoil starter.
Fuel shortage.
Refuel the machine.
Fuel valve is closed.
Open the fuel valve.
Poor quality fuel.
Replace with good quality fuel.
Overfilled with engine oil.
Adjust to correct fuel level
Air filter element is clogged.
Clean the element.
Return the choke bar completely. Put it
in the position.
Overfilled with engine oil.
Adjust to correct fuel level
Cylinder or piston ring is worn out
Replace the ring.
Return the choke bar completely. Put it
in the position
Poor quality fuel.
Replace with good quality fuel.
Defective ignition coil.
Replace the ignition coil.
Fuel filter is clogged.
Clean the fuel filter.
For new labels, please consult with your local retailer. Charges may apply.
If you do not understand any of these points, please consult with the retailer where you purchased
this machine.
You have trouble
starting the
machine, or the
machine will not
start at all.
Choke lever has not been pulled out.
Fuel is not flowing properly.
There is air or water mixed in the fuel
delivery system.
Defective spark plug.
Effect
Cause
Treatment
Replace with good quality fuel.
Muffler emits gray
smoke.
Engine revolution is
not stable (does
not increase).
Choke has not been fully opened.
Momentary stall.
Exhaust has an
irritating smell.
Poor quality fuel.
Output shortage
Choke has not been fully opened.
The machine stops
suddenly.
Exhaust gas is
abnormally black
Muffler emits black
smoke and power
output falls.
Choke has not been fully opened.
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