Perbaikan pengembangan crankcase mesin otto satu silinder empat langkah berkapasitas 65 cc = The improvement for development of crankcase engine otto one cylinder four strokes 65 cc capacity

Analisa CAM duration pada mesin otto satu silinder empat langkah berkapasitas 65 CC = Analyze CAM duration on one cylinder four stroke 65 CC spark ignition engine

Perancangan dan Pengembangan Cylinder Head dan Camshaft Assembly Mesin Otto Satu Silinder Empat Langkah Berkapasitas 65 cc = Design and Development Cylinder Head and Camshaft Assembly of Otto Engine Single Cylinder Four Stroke 65 cc Capacity.

Perbaikan pengembangan intake manifold pada mesin otto satu silinder empat langkah berkapasitas 65 cc = Improvement of intake manifold for 65 cc single cylinder otto engine

Pengembangan throttle body assembly pada mesin otto satu silinder empat langkah berkapasitas 65 cc = Development throttle body assembly of 65 cc one cylinder four stroke spark ignition engine