There is a 250mA fuse on the mains side of the transformer, you MUST fit the correct type.
An example is
this from RS, but it is not a thermal fuse which ideally you should have.
This fuse must be soldered in, if you cannot do this, then you should find someone who can.
Its possible that due to the low value fuse, that's all that has blown, otherwise you're looking at having the transformer rewound which is expensive.
Once you've got the machine working, you must replace the belts and lubricate the spooling motors.
Please let us know how you get on