Manunui was a part of the 1994 premiership-winning campaign, and continued playing after the side went into a decline from that era with players leaving or retiring.
Later, he continued to contribute as a coach and administrator, serving on club committees.
"He was a very staunch club man," said Marton premier coach Cornel Mason yesterday.
"He had his own business and he was always there for the club.
"He always said to me, if he was needed, just call him.
"It was a bit of a sad loss, but he had a good send-off from us. A lot of current and former players showed up."
The Facebook tribute told of a club man who would put the team above personal needs, on and off the field.
"Whether the Prems or Stingers were short, Piki would jump in and make an immediate impact, usually giving away a penalty in the first minute or so but then he would get down to the hard graft.
"He brought common sense, intelligence and practicality to [Marton's] committees.
"His stature and calm personality enabled him to soothe ruffled feathers and to calm things down when things got heated.
"Players will miss his ability to listen to their woes and the quiet advice he would give."
The tangi was held at the Rata Hall.
He is survived by his wife Linda, five of his six children, and seven grandchildren.