Be sure to use soft stick to clean the carbon residue inside ring grooves carefully, also carbon residue in other area if any. Check ring top marks during rings installation and before assembly piston groups into cylinder liners. Remember to use dedicated tool to install rings to avoid break rings. Check rings directions (related angles) before put piston group into cylinders. Don’t forget to lubricate piston and check cleanliness when put piston groups into cylinder liners.
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