Cleaning Cassette Decks

I have a Nakamichi DR1 cassette deck and I plan on recording some of my favorite vinyl for easy playback. It sounds wonderfull and maintaines the warmth and liquidity of my vinyl. I want to make sure I maintain it as well. Any advice on cleaners, technics, for heads, pinch rollers, other. I want to keep it in good shape. Also, anyone have any experience with the Nakamichi DM10 demagnetizer. thanks.