[3] Following early public education in his home area, he moved to Mbarara, the largest town in the sub-region, when he was a teenager.
When he moved to Mbarara as a teenager, he worked as a shop assistant in a produce store owned by an Asian family.
Wavamunno took over Spear Tours and Travel when its owner Ashok Patel was murdered by dictator Idi Amin's soldiers.
[5] In 1973, one year after the expulsion of Ugandan Asians by Amin, Wavamunno leveraged his assets and started Spear Motors Limited, the sole Mercedes-Benz dealership in Uganda.
In addition, Spear Motors is the sole distributor of Deutz Fahr tractors and farm machinery in Uganda.
Among other charitable acts, he has donated two ambulances to the association, renovated their offices in Kampala, and offered bursaries to orphans.