hifi engine

Sony 555 r2r manual

I recently acquired a 1961 Fisher Executive V console with a 2-track/4-track Sony Stereocorder 555 r2r. I've tried just about everywhere to find a service manual for it with no luck. Anybody here have one or know where I can get one? 4-track seems to be working fine but the right channel is very weak on the 2-track.

Thanks for any info anyone can provide!