Rotate the drive gear counterclockwise until the
indicator is observed in the window; continue rotation
slightly more until a slight click is heard. This will be
the impulse point. The impulse coupling will be
locked when turning clockwise. Hold thegear against
the impulse and install the magneto on the engine
in
the mid position of the adjustment slots. Use a timing
light; adjust the timing for thespecific fuel being used.
Magneto firing order is clockwise when viewed
from
terminal end.
SPARK
PLUGS
JB
and JC air cooled engines use standard
automotive spark plugs, Champion
H-8
or equivalent.
Clean and inspect the plugs at regular intervals. Clean
on
a commercial plug cleaner and gap. The spark
Plug gap should be set at .025-inch for
JB
engines and
.035-inch for
JC
engines. When spark plug electrodes
become worn, of if the plugs are damaged, replace
them. When installing spark plugs always use new
gaskets.
Redistribution or publication of this document,
by any means, is strictly prohibited.
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