Knock-Knock any LiL-Blue Tractors in here ...

Hello all, just picked up my first FORD LGT 145 -09jc3310 w/ 14HP KOHLER k321as.
W/BLOWER-DECK just did my 900 ft. driveway.smokes at start up.needs muffler leaking oil down side of the head(look at pics) Humm Rings?
Drew