{HEAD ~ The case main body} is applied with a cover member for containing therein liquid tightly a reduction gear means, and is applied with {TAIL ~ another cover member} for containing therein a V belt means 
{ HEAD ~ The case main body } is applied with a cover member for containing therein liquid tightly a reduction gear means , and is applied with { TAIL ~ another cover member } for containing therein a V belt means
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH