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Mounting screw
much grease, the cam will sling it onto the
contacts, fouling them.
Inspect point gap and ignition timing.
Gap Measurement
(With Feeler Gauge)
1. Turn the crankshaft to the right (clockwise),
using a 17 mm wrench on the bolt on the end of
the crankshaft, until the points are open to their
widest gap.
2. Measure the point gap with a clean flat feeler
gauge. The gap should be 0.014 in. (0.35 mm).
There should be a sllght drag on the
feeler gauge as
it is inserted a n d
removed. Hold the gauge looseljl in your
fingers to make sure you're not prying
the points open.
To adjust the point gap, loosen the 2 point
mounting screws slightly (Figure 69) then
insert a screwdriver into the pry slots and move
the base contact as required to set the gap.
Tighten the screws and recheck the gap; it often
changes as the screws are tightened.
4. Check the gap on the remaining set of
points. Adjust it if necessary.
5. Inspect the ignition timing.
Gap Measurement
(With Dwell Angle Meter)
The dwell angle is the number of degrees (or
the percentage of 360") of point cam rotation
during which the points are closed and current
can flow through them to the primary winding
of the ignition coil. The breaker point gap can
be measured with greater accuracy with a dwell
angle meter than with feeler gauges.
1. Connect a dwell angle meter according to
the manufacturer's instructions.
2. Install the spark plugs; see Spark Plugs in
this chapter.
3. Start the engine and allow it to idle.
4. Note the reading on the meter. The reading
for the correct gap on a meter calibrated in
percentages is 13%; the correct reading for a
meter calibrated in degrees is 48" when set for
"4 cylinder."
5. If the reading is incorrect, adjust the point
gap. Loosen the 2 point mounting screws
slightly (Figure 69), then insert a screwdriver
into the pry slots and move the stationary
contact as required to obtain the correct meter
reading. Tighten the screws and recheck the
meter reading; it often changes as the screws are
6. Check the dwell on the remaining set of
points. Adjust if necessary.
7. Inspect the ignition timing.
Contact Point and Condenser Replacement
It is a good idea to replace the condenser
every time you replace the points, but if you
want to use the old condenser, you can test it
easily after removal by touching the outer case
to the battery negative
terminal and
connecting the condenser lead to the battery
terminal. Allow the condenser to
charge for a few seconds, then quickly remove
it from the battery and touch the condenser
lead to its case (Figure 71). If you see a spark as
the lead touches the case, you can assume the
condenser is okay.
1. Check that the ignition switch is
2. Remove the screws that mount each contact
point assembly to its backing plate (Figure 69).
3. Lift the point assembly from its pivot.
Loosen the nut and remove the ignition coil
wire from the point terminal.
4. Remove all old lubricant from the point
cam and apply a sparing coat of fresh point cam
lubricant. Do not use too much.
5. R e m o v e t h e screw t h a t mounts the
condensers (Figure 72) and remove the
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