Electrician Job - Olympus AH, GP, 0042

I would like to get a quote to have a geyser timer installed and to have my generator connected to my home with a manual switch. I purchased my generator in Dec ‘21 and have used it probably about 15-20 times since as I have an inverter trolley too which I use daily, does my generator require a service? If so, please advise on the cost.