said case main body being integrally provided at the front casing section thereof with an engine casing to form {HEAD ~ a power unit} with said transmission cover member and said {TAIL ~ V belt cover}, the power unit being swingably mounted on the vehicle body; and 
said case main body being integrally provided at the front casing section thereof with an engine casing to form { HEAD ~ a power unit } with said transmission cover member and said { TAIL ~ V belt cover } , the power unit being swingably mounted on the vehicle body ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH