Use and Care Manual

18
3.6.2 Engine Troubleshooting
SYMPTOM
POSSIBLE CAUSES SOLUTION
Diicult to start, fuel is
available, but spark plug
will not ignite. (Power
available at high tension
code.)
Ignition plug not properly connected?
Carbon deposit at ignition?
Check ignition system.
Clean or replace ignition.
Short circuit due to deficient
insulator?
Improper spark plug gap?
Replace insulators.
Set spark plug gap to the correct gap.
Diicult to start, fuel is
available but spark plug
will not ignite.(Power
NOT available at high
tension code.)
Short circuit at stop switch?
Ignition coil defective.
Check stop switch circuit. Replace stop
switch if defective.
Replace ignition coil.
Fuel is available and
spark plug ignites
(compression normal).
Muler clogged with carbon deposits?
Mixed fuel quality is inadequate? Check fuel to oil mixture.
Fuel is inadequate (water, dust)?
Air filter clogged?
Flush fuel system and replace with fresh
fuel.
Clean or replace air filter.
Fuel is available and
spark plug ignites
(compression normal).
Defective cylinder head gasket?
Cylinder worn?
Tighten cylinder head bolts or replace
head gasket.
Replace cylinder.
Spark plug loose?
Tighten spark plug.
Clean or replace muler.
Operation not
satisfactory- Not enough
power available
(compression normal,
no misfiring)
Air cleaner clogged?
Air in fuel line?
Clean or replace air cleaner.
Bleed (remove air) from fuel line.
Fuel level in carburetor float
chamber improper?
Adjust carburetor float.
Carbon deposit in cylinder?
Clean or replace cylinder.