your chopper is probally a 49.5 cc chopper because there is no 495cc engine on a mini chopper it would be on a real chopper and would be a 500cc engine with 2 cylinders.
You should be able to tell by the physical size of the engine. A 495cc (usally called a 500) would be more than 4 times the size of a 110 and probably more than 1 cylinder. Look more closely at the stamping and see if it is realy 49.5cc which would be a 50cc. Besides, most people won't tell you an engine is 4 times smaller than it is!
some one on the web reckons its 495cc of oil 10w. in each leg
left fork capacity is 495cc and the left is 470cc on a 1984-1985 vf1100c sabre ,this is what i found in the clymer book