For about 3 bucks you can get a cartridge fuse holder and wire it in - very cheap insurance. The main fuse is there for a reason. Hard wiring it is like putting a penny in your house's fuse box (OK, I'm showing my age, but you get the idea)
everyone is exactly right. I am an Electrition and I can tell you there was a problem or the fuse would still be there. Put in the fuse and then correct the problem that is blowing it. By the way I also remember the the penny deal. Have it fixed it can be dangerous. Burn up your bike or garage or worse.