Abbakar Ame and Hamisi Abuu drilled in for Mlandenge in either half to help the outfit record a second win in a row.
Mlandege had earlier registered a 2-1 win over JKU win over in the opening match at the same venuethree days back.
Zimamoto's first meaningful opportunity in the yesterday match came on the sixth minute, as the side's striker was released inside the area and Mlandege defenders had to react on time to frustrate the former's attempt.
Mlandege replied three minutes later as one of the side's attackers headed wide as he attempted to connect a deep cross from the right.
Centre back Abubakar Ame notched the opener for Mlandege on the 12th minute, making the most of failure by Zimamoto defenders to clear a loose ball inside the latter's area.
Mlandege's striker, Hamisi Abuu, could have made it 2-0 on the 19th minute as he was clear inside Zimamoto's area and attempted a left foot shot which was though saved by the latter's goalkeeper.
Zimamoto had an opportunity to level matters on the 23rd minute as striker, Ibrahim Ahmada, got the better of Mlandege's defender outside the latter's area, only to attempt a weak right foot shot which was saved by goalkeeper, Masoud Kombo.
Zimamoto's left fullback, Hassan Ali, failed to head home a cross from the right on the 27th minute as the side piled pressure on Mlandege in search of an equalizer.
Zimamoto striker, Hakim Hamisi, wasted a glorious opportunity for his outfit on the 32nd minute, as he failed to control a pinpoint cross floated in by Ali from the left and Mlandege defenders easily thwarted the move.
Zimamoto defender, Shafii Hassan, reacted on time to clear a low cross by Mlandege forward, Mohamed Abdallah, on the 39th minute.
Kombo made a good diving save to frustrate Zimamoto's Hakim on the 43rd minute, parrying away a right foot shot by the latter, who had dribbled past a defender inside the area.
Ahmada levelled matters for Zimamoto during the added on time of the half, slotting home a loose ball after Mlandege defenders had failed to clear a free kick from almost 25 meters.
The opening 45 minutes ended with the two outfits level on 1-1.
Hamisi wasted a free kick that Zimamoto won almost 25 meters ou on the 70th minutet as he blated his effort way over.
Mlandege midfielder, Hassan Ramadhan, was put clear outside Zimamoto's area on the 73rd minute and floated in a cross, which went begging.
Abuu drilled in the second goal for Mlandege on the 81st minute after he had outwitted two Zimamoto defenders outside the latter's area.
The tournament's group A match pitting Jamhuri against Uganda's URA ended with the sides locked to 1-1 draw.