Delkron Twin Ca 117 - Manual (Page 4)

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material from the clearance notches equally until sufficient clearance is
achieved. ote – Material removed from pistons for clearance will not
adversely affect flywheel balance.
STEP # 7 – Piston ring end gap
Correct piston ring end gap is necessary for proper engine running.
With cylinders removed from engine and on work bench, install piston
into bore of cylinder, install one compression ring at a time into the top of
the cylinder 1.00” below the top of the cylinder bore, using the piston to
assure that the compression ring is “Square” to the bore … measure end gap.