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Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com
GENERAL OPERATING PROCEDURES
1. Locate the engine timing mark (see figure 1) and use a rag to clean all
grease and dirt from the mark and the pointer. It may help to use chalk or
white paint on the marks to make them more easily seen.
2. Check the manufacturers specifications for correct timing for the engine
being serviced.
3. Start and run the engine until the normal operating temperature is
reached. (Approximately 15 minutes.) Stop the engine.
4. If the specifications require, locate the vacuum tube going to the ignition
distributor vacuum advance and disconnect/ block the tube. A golf tee or
small pencil may be used to seal the tube.
5. Connect the timing light as shown in figure 3 on page 7.
6. Start the engine and operate at normal idle speed. Aim the timing light at
the timing mark.
7. Trigger the timing light and observe the reading from the timing mark.
8. Compare the reading obtained in step 7 with manufacturer’s
specifications. If the timing is not as specified, re-adjust as described in the
following procedure.
9. Stop the engine.
ADJUSTING TIMING TO SPECIFICATIONS
1. Loosen the distributor hold-down locking bolt(s) located at base of the
distributor enough so that the distributor may be rotated back and forth.
Do not over-loosen or remove the bolt(s) but leave tight enough to prevent
the distributor from turning by itself.
2. Start and run the engine.
3. Direct the timing light flash at the timing marks and slowly rotate the
distributor right or left until the timing marks are aligned with the pointer.
See Figure 4 on page 7. Stop the engine.
4. Tighten the distributor hold-down bolt(s) taking care not to change the
position of the distributor.
5. Start the engine and re-check the timing.
CAUTION: TAKE CARE WHEN WORKING AROUND A MOVING ENGINE.
KEEP HANDS, TOOLS AND THE TIMING LIGHT CLEAR OF THE MOVING
FAN, BELTS OR OTHER MOVING PARTS.
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