Continental L-Head Overhaul Manual - Igor Chudov

CONTINENTAL L-HEAD ENGINE MANUAL
TIMING MAGNETO TO ENGINE
1. Remov~ rear spark plug (#4 on four cylinder and
#6 on six cylinder engines.)
2. Set piston on top-dead-center by slowly cranking
until "DC" mark on flywheel (or crankshaft pulley)
will line up with the pointer in the flywheel housing
(or gear cover).
3. With magneto removed from the engine -- put it
firmly in a vise lined with soft cloths and turn drive lugs
of impulse coupling until lead to rear plug (#4 or #6)
fires.
Bosch and Wi,:o magneto indicate # 1 lead so rear plug
is directly opposite -- F. M. magnetos are not marked,
but rear plug lead is at 5 o’clock position when facing
distributor end.
tl. Check front end governor drive and make certain
that punch-marked tooth of timing gear is meshing between
the two punch-marked teeth of the governor drive
gear.
5. Turn back magneto drive lugs of impulse coupling
counter-clockwise about 1/~ turn so as to mesh with the
driving slots of the engine drive member.
6. Position magneto on engine and tighten mounting
bolts moderately and connect wires to spark plugs.
7. Start and idle engine 600 R.P.M. and using a
timing light connected to rear plug and battery source
--check to see; if timing is directly at "IGN-M" indicated
by pointer.
If not, rotate magneto assembly until timing is correct,
then tighten magneto mounting bolts.
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IMPORTANT: Engine specifications require magnetos with the correct amount of "Built-in Lag" -which
permits timing the magneto to the engine correctly as outlined.
Do not substitute other magnetos.