Yes this manual is in English - reasonably good translation - occasional slipup of the work 'repair' when they mean 'modify' and that sort of thing but its in full colour and very high quality.

It is not the MC28 Service Manual like what you have for sale in the Marketplace section - it is the HRC manual, outlining all the HRC parts and which mods to make and how to fit and setup the HRC parts. Also has the complete HRC parts list for the MC28 in the rear.