If you need an owner's manual in English, they are available.
I bought my bike from Khun Aek at Niyom Panich Chiang Mai.
Part of the deal was the provision of an English language manual.
Initially it was coming to me by PDF, but eventually it arrived in the mail in the form of a 128 page A4 size printed bundle from AP Honda ! (a tad too bulky to slip under the seat!!)
I reckon the same booklet they send with their bikes to English speaking countries would be possible to obtain (and cheaper for them to mail!)
If you need a copy of the English version, perhaps you could request it from the dealer from whom you bought your bike
or go direct to;
Publication/After-Market Division (the covering letter was not signed)
tel 02 757 6111
fax 02 757 6222