crystal... WELCOME to LMF..
Most clutches are not rebuild-able, but a some of the older ones are adjustable... if you have not slipped it so much as to burn up the friction surfaces, you may be able to adjust the air gap, and that could tighten it some what...
If you do need to replace the clutch... check around as electric clutches will vary a lot in price... eBay is a good place to look.. :smile:KennyV