Got to love this English in the manual.
"Lubrication System
Pressure the oil of oil pump is elevate the oil passages of crankcase of thread. Discharge the oil
camshaft to side from crank celing side and the revolution of the camshaft to dissemination the oil
mist from the crankshaft chamber. Lubrication the piston and big end, small end, shaft, gear."
Someone's Japanese to English translation skills need brushing up on. :laughing: