Does anyone know where i can get a new fuel pressure switch from for a W40.
Do you mean "oil pressure switch?"
The switch is indicated as #11 on the wiring diagram. It is part #37323 and sells for $14.41 from the following http://www.marinedieseldirect.com/catal ... T&size=600 (http://www.marinedieseldirect.com/catalogs/catalog_group.php?owner=mdd&catalog=13765&model=40%20/%204-107%20/%204-108%20/%20WPD%2010%20/%20WPDS&page_ident=13765-265&manufacturer=Westerbeke&title=ELECTRICAL%20SYSTEM%20-%20MARINE%20ENGINE%20-%20PUSHBUTTON%20START&size=600)
Don Woodruff
Mainmast.com