I don't know about the Tower .75 but my Tower .61 came out of the box tighter than tree bark. I thought it was seized. When I read the instructions they mentioned that this is normal. I ran it in according to the directions and it has run fine except for one minor problem which was an air leak around the carb. I had to pinch off the fuel line to shut the thing down. A little sealant solved that problem and it has run great ever since.

Rufcut