MP98 is not a Wayne oil burner model designation.  MP98 is a product identification number assigned to Wayne Combustion Systems by Underwriters? Laboratories.  The MP98 designation tells us you have a Wayne oil product, but not what product that is.  If the nameplate decal and the Specification Number decals are gone, or unreadable, please write down model information off of the motor, transformer and fuel pump.  Jot down details about the appliance in which the oil burner is installed as well.  Then either submit an email inquiry using Contact Us or call us at 800.443.4625 for assistance.