thank you Mr prof for your answer to my question last time, but Mr prof there is a friend of mine that have been using this SUMEC FIRMAN SPG 2900 year's ago and has no complain about it, but  my question is I don't see FIRMAN engraved on it , both the tank , engine , etc  ........., so prof does that mean that is not original ??, here is the picture of the generator ���

good day Prof, I have this generator and I don't really know the kva , it doesn't carry my small fridge , infact it's not serving my three bedroom apartment, I don't know if it's the fault of my road side mechanic or mine, but I don't think it's mine, because I'm looking at the model size number EC3500CX , because my neighbor has SUMEC FIRMAN generator SPG3000 and is carrying his three bedroom apartment with bigger load than mine, and this my generator is making a lot of noise , please mr Prof HELP.

good morning Prof, please sir I'm writing from Anambra State living At Awka, I have SPG 1800 for years now working very well, but now the generator is having engine problem, please Prof where can I get the half engine , sir I want it to be SUMEC FIRMAN please I need your help thank you.