For sale here is the service - repair manual for the 1981 Yamaha BR250 snowmobile. All information is factory material, in PDF format. The manual is in English, and contains 191 pdf pages in total, maintenance schedule, component location, service and repair procedures, and much more.

The advantage of having the manual in PDF file format is that you can quickly search a keyword, or jump to a specific section to find what you are looking for. Also, you can print out a section to take with you to to the shop, and make notes on them (you probably wouldn't write on the factory book manual).