Turns out this was not the manual i was looking for. The concertmate 670 keyboard i have is a "Realistic" model made for Radio Shack and none of the diagrams on the owners manual i received matches up. HOWEVER, I must say the service Owners Manual provides was fast and efficient by being available online. The manual was in good readable condition and easily downloaded.
Nettoyage des ressorts
Des objets peuvent parfois se coincer dans les ressorts et diminuer la puissance d�aspiration. 17. Enlever les ressorts en desserrant la petite vis, puis en les retirant de la �xation. Nettoyer les ressorts à l�aide d�une tige ou d�un objet similaire. Remettre en place les ressorts dans la �xation et resserrer la vis de blocage.