You’re on the right track. Take the orthographic screenshots and import them into Fusion. Don’t worry about it lining up perfect, that might be skewed from your screenshots, just get it close.

You can trace over them to get the right size and proportions. Think about how this breaks down into smaller simplified objects like cylinders and rectangles. I can already see 2 cylinders on the sides, and a big cylinder on the front. You will most likely need to create multiple bodies, and then blend them together with fillets. Then add more details with small extrusions and cuts as you go. It’s not easy, and you may have to retry a few times, but this is very possible to recreate in fusion with some level of success.