Piston Ring: Testing and Inspection

MATCHING PISTON RINGS TO A NEW OR REBORED CYLINDER:
1. Push the pistons rings down into the cylinder one by one, using a piston to position them correctly.
2. Measure the ring gap with a feeler gauge as shown. If necessary, widen the gap by means of a special file.

NOTE: Refer to the "Specifications" section for correct gap sizes.

MATCHING PISTON RINGS TO A WORN CYLINDER:
Piston rings for a worn cylinder should be matched in the same way as for a new or rebored cylinder, but they must be tried at the lower limit of piston travel (BDC) as the bore is narrowest at this point.