TO DRILL AND TAP THE CRANKCASE FOR LOCK SCREWS: Lay crankcase on bench with cam case side down. Use an electric hand drill with 6" long, No. 16 drill. Drill through die right crankcase into bore, using the two drill pilot holes provided in drill plate (Item 4, ILLUS. 1). This procedure is shown in ILLUS. 5.

Remove drill jig from crankcase. From the flywheel side, tap the two holes using a No. 12 — 24 thread tap. When tapping these holes, extreme care must be

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