how can i fix my hotpoint wma63 washer?

i have hotpoint wma63 ultima extra which starts the washing cycle but then just cuts off after about a min - water is travelling into the cylinder but when it cuts out the water drains away it has spun at 1600 spin which is its rated spin speed once since this problem occured so i figure that the problem isnt major because it managed a complete spin cycle the other night since then it just keeps cutting out after you start the cycle - any body offer me any pointers thanks