UM-0085-B7 DT80 Range User’s Manual ~ ® Intelligent Data Logging Products DT80 Range DT80/81/82/85 Series 1, 2 & 3. Yamaha dt 80 lc lc2 Service manual - Adly Aeon Agusta Ajs Aprilia Bahus Bajaj Baotin Barossa Benelli Beta. The cover on this book is a little confusing because it also contains information for Yamaha 1980 GT80G, DT100G, 1978 GT80E, GTMXE, and 1977 DT100D motorcycles. This printed and bound book provides detailed service information, step-by-step repair instruction and maintenance specifications for 1982 Yamaha DT80J, 1983 Yamaha DT80K, 1982 Yamaha DT100J and 1983 Yamaha DT100K motorcycles. Description This 226 page, 1982-1983 Yamaha DT80 GT80 DT100 Service Manual is a reproduction of the original, out of print manual.