You can buy a replacement switch on the Shop-Vac website and install it yourself. Shop-Vac markets itself towards do-it-yourselfers and therefore encourages consumers to manage the upkeep of their vacuums without calling in the experts.
The top of the vacuum comes off easily to change the filter. Once it's off, the owner has full access to the switch replacement.
Buying a Shop-Vac replacement switch requires locating the proper model number, which is located either below the switch or beside the power cord. Different models of the vacuum may have slightly different switches. Shop-Vac.com offers basic troubleshooting tips to help make sure that replacing the switch is the best course of action for a Shop-Vac malfunction.