23
The Engine Starts
Does it run
continuously?
It should be
ready to go.
Is the high
speed needle
setting 3-1/2 to
3-3/4 turns out
from closed
(if the engine
is broken-in)?
Is fuel getting
to the engine?
Clear the
engine
of fuel.
Does the engine
quit when the
glow plug clip
is removed?
Replace the
glow plug.
Make sure the
fuel line is
connected and
check for leaks.
Try starting the
engine again.
Reset the high
speed needle.
Check that the
pressure line
is connected to
the muffler. The
fuel may be bad.
YES
YES
YES
NO
NO
NO
NO
YES
YES
The Engine Does Not Start
Does the engine
turn over easily?
Is foreign matter
clogging the fuel
tank or fuel line?
Is fuel in the
fuel line?
The engine may
be flooded. Clear
the engine of fuel.
Try starting the
engine again.
Remove the
obstruction
from the fuel
tank or fuel line.
Is the battery for
the glow starter
charged?
Is the glow
plug red hot?
Replace the fuel
line and flush out
the fuel tank.
Does the engine
turn over easily
with the glow
plug removed?
NO
NO
YES
YES
Replace the
glow plug.
YES
YES
Check the high speed
needle setting and
prime the engine.
YES
YES
NO
NO
Charge or
replace the
batteries.
NO
Check that nothing
is caught in the
engine. Check that
the pull starter
operates smoothly.
NO
IMPORTANT!
The fuel tank should
only be half-full or
less when starting.
ENGINE TROUBLESHOOTING
