Repair question for VAX V-123 Agility carpet washer?

Hi all, I have the cleaner above, Yesterday I wheeled it around my parents to clean their carpet, however when I started it, it began to 'pop' and tripped the main switch, there was also a slight burning smell, I suspect now that somehow water may have entered the motor during the short trip, I sunbathed it yesterday hoping any water might evaporate, but when I tried it again the same thing happenned. My question is as I do not really want to let go of this great little cleaner is the motor easy enough to replace and does anyone have experience of repairing this model that they could pass on.
Thanking you. Mark.