Yamaros put the two time NSL champions under pressure in the opening exchanges coming close to scoring twice through Wipsie Dibewewe and Pais Yepei.
But keeper Ronald Warisan was up to the task and determined not to let anything pass him.
The Dwellers were able to weather the early storm and eventually found their rhythm.
After several attempts, star striker Raymond Gunemba eventually found the back of the net to put his side in front in the 27th minute of play.
The second half of play belonged to the Dwellers who pummelled their opposition scoring five goals through Emmanuel Simon (53), Peter Dabinyaba (55), Gunemba (58), Matthew David (68) and Gunemba again (78).
The city boys managed a goal when Moses Ray was able to beat Warisan in the 75th minute of play.
Meanwhile, in the first match this morning, a goal from Neil Hans in the 6th minute was enough to give Madang FC a 1-0 win over Besta PNG United FC.