Allen Analog Organs-	Should be tuned and have their tab and key contacts cleaned every 2 to 4 years
Allen Digital Organs-	Consult your local Allen Dealer / Technician
Baldwin Organs-	Should be tuned and have their tab contacts and key contacts cleaned every 2 to 4 years.
Conn Organs-	Should be tuned and have their key contacts cleaned every 2 to 4 years
Gulbransen Organs-	Should be tuned and have their key contacts cleaned every 2 to 4 years
Hammond Organs-	Should have their drawbars cleaned every 2 years and most older models need their tone generators oiled every year. Ones built in the 70's should have their board connectors cleaned every 6 to 8 years.
Kimball Organs-	Should be tuned and have their key contacts cleaned every 2 to 4 years. They should also have their board connectors cleaned every 6 to 8 years
Leslie Speakers-	Should have their motors and bearings oiled every 5 years.
Lowrey Organs-	Should be tuned and have their tab contacts and key contacts cleaned every 2 to 4 years
Rodgers Organs-	Should be tuned every 1 to 2 years
Thomas Organs-	Should be tuned and have their tab contacts and key contacts cleaned every 2 to 4 years
Wurlitzer Organs-	Should be tuned and have their key contacts cleaned every 2 to 4 years
Most Digital Pianos-	Should have their key contacts cleaned or replaced every 5 years