Looks like you can buy one from https://www.classicchessandgames.com/OwnersManualsInstructionBookletsforchesscomputers.html
Mephisto Marco Polo - looking for manual
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Thank you, David! I thought that someone has a pdf copy of the manual. Keeping in mind that I bought the chess for 14$ including shipment, 15$ without delivery sounds not so attractive to me. 
I alredy have several games, but I want to use all functions of the "Marco Polo".
I hope this is not too late. The Marco Polo chess computer was just the travel version of the H&G Europa A table top model. A PDF file of the English manual is readily available online for free. I can send you the file if you can't find the link. Have fun!
NormMit, thank you for your input! I would be extremely thankful if you could send a pdf to me @ georgi_ssgg(at) abv. bg (without intervals)
I already received the manual! Thank you NormMit! I just want to share that I am really impressed by the helpfulness in this community! Stay safe!
Hola ..pues si sois tan amables yo necesito también el pdf en ingles del Mephisto marco polo. Lo tengo mucho tiempo y se me ha extraviado ..gracias de antemano por vuestra amabilidad..
Hola! Please, share an email on PM and I will forward the pdf.
The saitek webpage is for another Mephisto computer. The Mephisto Europa A model (nearly identical to the Marco Polo) is referenced at http://alain.zanchetta.free.fr/docs/mephisto/Mephisto_Europa_A_EN.pdf
Enjoy!
Hello all!
I dicided to restart my chilhood hoby (chess) a week ago by buing a retro electronic game - a Mephisto Marco Polo. It is in perfect working condition, but it came without a manual. I would be more than grateful, if somebody could share a link.
Cheers!