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Fitting Pistons

Inspect and measure cylinder for wear or taper. Measure piston diameter and determine if clearance is correct. Install expanding ring in bottom groove of piston with ends butting but not overlapping. From bottom of piston install bottom rail and from top, upper rail. Install middle ring with word "TOP" facing upward. See Figure. Install upper compression ring and stagger ring gaps.

NOTE: Oversize rings are available in 0.010 and 0.020" (0.254 and 0.508 mm) oversizes.
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