Been translating an old manual for this bike, mostly to identify left hand threads. Some are going OK. This is the engine lubrication.
Lubrication of the engine-gearbox unit
In this type of engine, the oil has not only the function of lubrication, but also has the important function of cooling the
engine, making the office water engine water circulation. A gear pump sucks the oil from the tank
and injects it into the motor shaft from the part of the distribution. The oil then runs through the internal ducts of the motor shaft and
out of the holes drilled in it under the big end. After lubrificalo latter, the oil passing through the rollers of the
bearing of the connecting rod head, comes out to the sides of this, and, by centrifugal force, comes projected on the plug, on the piston and on
the cylinder walls as well as on the transmission gears, lubricating and cooling ciuesti organs. The oil sovrabondante,
using a special elastic band applied to the piston, is driven back into the crankcase and collects in the bottom of this. From here,
by means of a pump d vane coaxial with the first pump, the oil is sucked and pushed into the reservoir.
It is noted that the direction of rotation of the motor, contrary cilla direction of travel, combined with the horizont al arrangement
the cylinder favors the perfect lubrication of the cylinder itself, since the oil droplets are, by centrifugal force
proietate on top of cilindio, whence the oil drops by gravity to also lubricate the lower part.
I actually think it's not bad for a first attempt.