Bought a 110cc kids utility 4 wheeler,chain drive, automatic transmission, just finished assembling the parts. Have a question before i actually start it for the 1st time. Facing the atv, on the left is a cap/dipstick for the engine-oil. This seems to be sufficient. On the right (slightly above footrest level) there is an access hole with a quarter size threaded cap in a housing that sits just in front of the front cogwheel. I unscrewed this and there is nothing in there. (Owner's manual is the worst i've ever seen. But if i read it right, at some point it informs off adding gearbox oil). Now i'm uncertain as to whether i need to add oil in there or not. Not sure what all i need to do (besides tightening everything) prior to starting this w/o damaging anything it. Any adice appreciated. Thanks  

the quarter size threaded cap is the access hole for the timing marks on the flywheel, DO NOT USE THIS HOLE TO ADD OIL.