Shimano Di2 manuals, documentation and compatibility information can be a bit hard to find. While I’ve written about compatibility before, I haven’t actually explained where you can find this – and other – information.

Shimano Ultegra R8050 Di2 User Manual Instructions
Shimano Ultegra Di2 R8050 Manuale
Shimano Ultegra R8050 Di2 User Manual User
Shimano Ultegra R8050 Di2 User Manual Transmission
Shimano Ultegra R8050 Di2 Manual Dansk

Shimano manuals and other resources. There is a lot of other information on Di2 out there, you just have to know where to look. Carlton Bale has an excellent page with in-depth Di2 information, GPLama / Shane Miller has a bunch of videos up on Youtube and of course there’s GCN and GCN Tech as well.

Shimano documentation does exist and there is in fact quite a lot out there. On this page we’ll show you where you can find the documents and how you can use the different sites they have put online.

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The DURA-ACE and Ultegra Di2 shifters in combination with SHIMANO STEPS drive units are compatible with Ultegra (R8050) and XT (M8050) derailleurs. Mechanical shifting If you choose to use SHIMANO STEPS mechanical shifting which lacks the Di2 shift button, it is still possible to ride with drop handlebars.
The Ultegra R8050 Di2 groupset is the latest development in the evolution of the electronic groupset from Shimano. Taking technology from the Dura-Ace Di2 groupset while at the same time refining the previous version of their Ultegra Di2 groupset Shimano have tweaked the ergonomics of their Di2 shifters and included more shifting options to enable you to fine tune your setup to suit you.
Click here and find out the manuals of SHIMANO products, technical information, safety data sheet of grease and so on. User's manuals are describing safety information and procedures for consumers, dealer's manual are describing how to assemble and adjust the product for primarily professional bicycle mechanics.

There is a lot of information on this page so I have included these links, allowing you to skip to the section that you’re interested in.

Manuals and Technical Documents – si.shimano.com

The main resource for Shimano documentation is si.shimano.com. This is where you’ll find manuals and documents, and it also serves as a portal leading to other sites containing technical information.

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Documents that you will find on si.shimano.com are:

User Manuals (UM)
Dealer Manuals (DM)
Service Instructions (SI)
Exploded View / parts breakdown (EV)

I’ll discuss each type of document below, but first let’s have a look at how you can use the site to find the information you need.

Search si.shimano.com by keyword

There are four ways to search the si.shimano.com database – you can search by keyword, hardware series, component or by manual number.

Searching by keyword is the default method and it is the first thing you see when you browse to si.shimano.com.

Using the keyword search is simple – just enter whatever it is you’re looking for and the site will list all documents containing that keyword. For example, if you want information on external batteries and external battery mounts you would enter “external battery”.

You can use the checkboxes at the top of the page to filter the search results, but you can also use the search keyword field. If you want to see only the Dealer Manuals (DM) simply add ‘dm‘ to the end of your search query.

If you want to see only the Service Instructions just add ‘si‘ to the search query. You can also combine these filter keyword. To search all Dealer Manuals and Exploded Views you would add ‘dm ev‘ to the search query.

One last thing that’s pretty nice about the search results is that you can change the way they are sorted. If you click the ‘Select sort key‘ box you can choose to sort by model, series or component. You can also group the search results by Document instead of by Model by using the buttons at the top right.

That’s also where you’ll find the ‘Download‘ button. If you check the boxes in the ‘DL‘ column and click the ‘Download‘ button the site will create a zip archive and trigger a download.

Finally, when you hover over a document name a window appears containing the first page of the document and all the components that are mentioned in that specific document.

Search by Series

Another way to search the documents is by hardware series. While I personally prefer keyword search (it just works), the series search is actually pretty good. The way it works is you choose the category you want to search:

All
MTB
Road
Gravel
E-Bike
and more.

You then get to select your series – “Ultegra Di2” for example and finally choose the specific series/generation number. In case of “Ultegra Di2” you would be able to choose between R8050, 6870 and 6770. Once you’ve made your selection you will be presented with a list of all documents applicable to this specific hardware series.

Search by Component

This third option is very much like the “Search by Series” option, except now you choose the component instead of hardware series. If you were looking for an MTB Di2 rear derailleur you would first choose “MTB Di2″ and then “Rear Derailleur”. The site will then list all documentation applicable to MTB Di2 rear derailleurs.

Shimano Ultegra R8050 Di2 User Manual Instructions

Search by Manual Number

To be honest I am not sure when anyone would want to search by manual number, but the option is there if you need it. It is basically the keyword search function, but restricted to just the manual number.

User Manual, Dealer Manual, Service instructions. what file contains what information?

A Dealer Manual generally contains an overview of the tool you need, installation instructions, information on adjusting settings and maintenance guides. These files explain how to install an entire groupset, set it up and do final tweaks. The dealer manuals are the most extensive and most useful of the files by far.

The User Manual contains consumer safety information and an overview of the parts and part names involved. A hard copy of the User Manuals comes with all components. A user manual is only one or two pages big and will hardly ever contain detailed information.

An Exploded View or “EV” contains a detailed overview of the parts that make up a component, their part numbers and a short description. This is useful when you are trying to fix a component or need to replace a broken part.

If a part does not have a part number on the exploded view it is not officially available for ordering.

Service Instructions tend to be available for older components only. They are a mix of a User Manual and technical information. You won’t see a lot of these.

Update information

Shimano update their documentation continuously, not a month goes by without them uploading new or updated files. Looking at the updates can give some insight into what they are working on.

You can see the full list of Shimano documentation changes by clicking the “Update Information” button on the left.

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