talk to the fat guy in the power plant, near the rocktunnel. he's working at the machine
Battle Misty
It is behind the tube next to the gym leaders chair
Chase him to route 25, he will tel you where the machine part is.
When you return the machine part to the power plant.
Technical Machine 15
you find it in mistys gym, near the float tubes at the upper left. hope this helped!
What does the scientist's house look like in soul silver and same with the machine.
he is found at lvl 45 in Pokemon soul silver he is found at lvl 70 in Pokemon heart gold
outside the powerplant after you beat the machine parts
Use your dowsing machine and look hard!
in 1 of the life rings in the cerulean gym
he gives you the missing machine part for the generator at the power plant :) hope i helped :D