This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, etc. for valve rockers used in mini-car gasoline engines. This standard applies to valve rocker arms (hereinafter referred to as rocker arms) for mini-car gasoline engines.
HBm 65.20-1988 history
1988HBm 65.20-1988 Specifications for valve rocker arms of gasoline engines for miniature automobiles