Table of Contents
Advertisement
plug wire at the distributor cap, using a suitable adapter and
following the instructions of the instrument manufacturer.
CAUTION: Do not attach timing light clip directly
to
spark
plug boot as boot may be punctured so that arc over will occur.
2. Start engine and set it to idle at a speed not to exceed
350 R.P.M., so that vacuum and centrifugal advance mecha-
nisms are not in operation. This is absolutely necessary to
insure correct timing.
3. Direct the beam of timing light upon the timing indi-
cator and rear edge of the balancer. The yellow timing mark
must be aligned with the indicator line marked "5" for proper
ignition timing.
4. If necessary, loosen the clamp bolt and turn the dis-
tributor housing very slowly in required direction to bring
the yellow timing mark into alignment with the 5 degree line
on indicator, then tighten clamp bolt securely.
5. Reset engine idle speed to 450 R.P.M.
6. Remove adapter or extra wires used with timing light,
make certain that spark plug wires are securely pushed into
distributor cap towers and that spark plug boots are properly
installed.
Spark Plugs. Clean the spark plugs thoroughly, using an abra-
sive type cleaner. If the porcelains are badly glazed or blis-
tered, the spark plugs should be replaced. All spark plugs
must be of the same make and number or heat range.
Adjust the spark gaps to
.035",
using a round feeler gauge (fig. 41).
CAUTION:
In
adjusting the spark
plug gap never bend the center
electrode which extends through
the porcelain center; always make
adjustment by bending the side
electrode.
Install the spark plugs in the en-
fig. 4 J -Se,tlng Spark Plug
g'
. g
g k ts
Gap
Ine, USln new as e .
If a tension wrench is used when installing the plugs, the
proper tension is 20 to 25 foot pounds maximum. If a tension
wrench is not available, screw each plug in "finger tight" and
then with a wrench tighten each plug
1f2
to
%
turns beyond this
.
• 33 •
Advertisement
Table of Contents
